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Edithistory:Field propulsion

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1360584819 2026-06-22T11:58:56Z ජපස Nominated for merging; see [[:Wikipedia:Articles for deletion/Field propulsion (2nd nomination)]].
1360567865 2026-06-22T08:48:25Z ජපස Not in citation given.
1360495661 2026-06-21T20:44:14Z Johnjbarton /* Pre-20th century to the 1910s */ Kepler stuff is made up
1360272736 2026-06-20T10:52:49Z ජපස /* Field propulsion based on physical structure of space */ removing pseudophysics and a completely unreliable source.
1360272096 2026-06-20T10:43:56Z AnomieBOT Dating maintenance tags: {{Cn}} {{Not in citation given}}
1360270722 2026-06-20T10:23:15Z ජපස removing unreliable sources per talk.
1360171619 2026-06-19T17:55:58Z AnomieBOT Dating maintenance tags: {{Cn}}
1360169068 2026-06-19T17:35:28Z Very Polite Person ok
1360166167 2026-06-19T17:13:49Z Very Polite Person order
1360164497 2026-06-19T17:00:23Z Johnjbarton /* Theoretical proposals */ This source is about a claim of field propulsion but it is not Casmir effect.
1360060518 2026-06-19T00:11:17Z ජපස Added {{[[Template:Original research|Original research]]}} tag: the article appears to be largely [[WP:SYNTH]] where it is not based on [[WP:PROFRINGE]] sourcing.
1360057791 2026-06-18T23:47:54Z NightWolf1223 add
1360056166 2026-06-18T23:33:18Z AnomieBOT Dating maintenance tags: {{Original research section}}
1360054052 2026-06-18T23:13:03Z ජපස /* Background and history */ this is an OR section.
1360053859 2026-06-18T23:10:53Z ජපස Added {{[[Template:Unreliable sources|Unreliable sources]]}} tag: see talk
1360053438 2026-06-18T23:06:43Z ජපස Added {{[[Template:Fringe theories|Fringe theories]]}} tag
1359666389 2026-06-16T14:24:49Z LocusAndLeaf added wikilink
1358094844 2026-06-06T14:44:14Z ToadalChaos added [[Category:Propellantless propulsion]] using [[WP:HC|HotCat]]
1358094116 2026-06-06T14:38:40Z ToadalChaos removed [[Category:Celestial mechanics]] using [[WP:HC|HotCat]] -- celestial mechanics is strictly about natural bodies
1357544024 2026-06-03T07:13:45Z AnomieBOT Dating maintenance tags: {{Who2}}
1357542106 2026-06-03T06:53:16Z Gråbergs Gråa Sång /* Theoretical proposals */ who is Musha?
1355376826 2026-05-21T13:52:23Z Very Polite Person /* See also */ {{Sister project links}}
1354966306 2026-05-19T05:48:51Z Khalitate Disambiguation
1354059788 2026-05-14T02:04:35Z Very Polite Person /* Field propulsion based on physical structure of space */ > last two should not be in there so /* Ongoing missions and research */
1344143993 2026-03-18T16:16:34Z Very Polite Person /* 21st century */ [[LightSail|LightSail 1]] and LightSail 2 flew between 2015 and 2019, with functional sail-type propellantless systems active in [[outer space]].<ref name="PS FP 2015-06-09" /><ref name="PS FP 2020 LightSail2" />
1344143928 2026-03-18T16:15:56Z Very Polite Person /* 21st century */ While further research and study continued, new environment-coupled propellantless systems were launched into space.
1344143667 2026-03-18T16:13:24Z Very Polite Person /* Background and history */ In this article, ''field propulsion'' is used for [[propulsion systems|propulsion system]] concepts in which [[thrust]] arises from [[Coupling (physics)|interactions]] with external [[Field (physics)|fields]] or ambient [[Interplanetary medium|media]], rather than primarily from onboard [[Fuel|chemical propellant]], while noting that some later sources instead use the narrower label ''propellant-less propulsion'' for environment-coupled systems.<ref name="Minami Mush
1344143575 2026-03-18T16:12:44Z Very Polite Person In narrower modern literature, related ''propellant-less propulsion'' discussions often focus on environment-coupled systems, while the historical contractor and survey literature treated field propulsion more broadly and sometimes grouped related terrestrial electromagnetic propulsion and some beamed-energy concepts within the same analytical framework.<ref name="NASA FP small 2024-03-17" /><ref name="Myrabo NASA JPL Beam/Field Concepts 1983" />{{rp|25-26,I-2}}<ref name="Gilland NIAC Plasma 201
1344143490 2026-03-18T16:12:03Z Very Polite Person /* top */ Several related propulsion systems discussed alongside field propulsion in the broader historical literature surveyed here have since been demonstrated in practice, including [[electrodynamic tether]]s in orbit, [[solar sail]] spacecraft such as [[IKAROS]], and terrestrial applications such as [[magnetic levitation|maglev]] transport, [[magnetohydrodynamics|MHD]] ship propulsion, and [[electrohydrodynamics|EHD]] thrust devices.<ref name="Myrabo NASA JPL Beam/Field Concepts 1983" />{{rp
1344030283 2026-03-17T21:41:33Z Very Polite Person /* top */ ce efn
1344029952 2026-03-17T21:39:36Z Very Polite Person /* Notes */ add section
1343996639 2026-03-17T17:33:57Z Very Polite Person /* top */ <ref name="Minami Musha Field Acta Astronautica 2012" />{{rp|1}}
1343996565 2026-03-17T17:33:17Z Very Polite Person /* References */ +quote
1343994987 2026-03-17T17:20:19Z Very Polite Person /* 1960s-1970s */ +image
1343993593 2026-03-17T17:08:46Z Very Polite Person /* 1920s-1950s */ ce -- this [[Hermann Oberth]] passage and image are better for [[Spacecraft electric propulsion]]
1343980590 2026-03-17T15:23:37Z Very Polite Person /* Field propulsion based on physical structure of space */ cut this line
1343908265 2026-03-17T03:13:44Z Very Polite Person /* top */ comment out Lorentz image for now, to see if the article works better without it (and it's on the sister page for [[Spacecraft electric propulsion]])
1343843880 2026-03-16T19:03:49Z Very Polite Person /* Pre-20th century to the 1910s */ The physical basis for Kepler's intuition began to emerge over two centuries later.
1343843220 2026-03-16T18:59:28Z Very Polite Person /* top */ ce
1343842751 2026-03-16T18:55:55Z Very Polite Person /* 1990s */ ce
1343842011 2026-03-16T18:50:08Z Very Polite Person /* Arts and culture */ ce
1343841682 2026-03-16T18:47:32Z Very Polite Person /* Arts and culture */ ce
1343840260 2026-03-16T18:36:50Z Very Polite Person {{distinguish|Spacecraft electric propulsion|Reactionless drive}}
1343823048 2026-03-16T16:30:33Z Very Polite Person Large update based on [[Talk:Field propulsion/GA1]]; page being split here and [[Spacecraft electric propulsion]] > imported to [[User:Very Polite Person/draft/Field propulsion/Field propulsion split to FP]] > back to here with changes
1343647274 2026-03-15T16:04:21Z Very Polite Person /* Field propulsion based on physical structure of space */ Meanwhile, concepts once unproven now fly in space, and research continues on the remaining unproven options.<ref name="NASA ACS3 what-is" /><ref name="NASA ACS3 deploy 2024" /><ref name="Aalto Foresail-1p 2025" /><ref name="Gilland NIAC Plasma 2011" />{{rp|1,25–26}}<ref name="Millis BPPP NASA 1998" />{{rp|1–2}}
1343647212 2026-03-15T16:03:57Z Very Polite Person /* Field propulsion based on physical structure of space */ Several foundational ideas in field propulsion, from Kepler's 1610 vision of "sails adapted to the heavenly breezes" to Tsiolkovsky's 1911 proposal to use electricity to accelerate ejected particles, have since been realized in demonstrated spaceflight systems.<ref name="Kepler Quotes" /><ref name="Rosen Kepler" />{{rp|39}}<ref name="Choueiri FP 2004" />{{rp|4}}<ref name="PS FP 2015-06-09" /><ref name="PS FP 2020 LightSail2" /><ref name
1343596339 2026-03-15T07:49:43Z Very Polite Person /* Definitions */ If any of you have been confused, "what's he building in there?" -- here: In other words, this kind of drive pushes against the charged particles it creates, as if an airplane propeller could create its own air. In the same vein, some other field propulsion concepts take advantage of nearby available energy fields.
1343552410 2026-03-15T01:17:38Z Very Polite Person /* See also */ {{Commons}}
1343552298 2026-03-15T01:16:21Z Very Polite Person [[speed of light]]
1343552228 2026-03-15T01:15:44Z Very Polite Person /* 1990s */ [[Kaliningrad]]
1343552189 2026-03-15T01:15:21Z Very Polite Person /* 1960s-1970s */ [[Mercury (element)|mercury]]
1343552129 2026-03-15T01:14:52Z Very Polite Person /* 1960s-1970s */ [[German Aerospace Center]]
1343552031 2026-03-15T01:14:03Z Very Polite Person /* 1920s-1950s */ [[Franklin Institute#Theaters|Fels Planetarium]]
1343551913 2026-03-15T01:12:58Z Very Polite Person /* Arts and culture */ [[Amazing Stories Quarterly]]
1343551825 2026-03-15T01:12:17Z Very Polite Person /* Arts and culture */ [[Cities in Flight]]
1343551769 2026-03-15T01:11:47Z Very Polite Person /* Arts and culture */ [[Barsoom]]
1343551675 2026-03-15T01:11:08Z Very Polite Person /* Arts and culture */ [[Spindizzy (Cities in Flight)|spindizzy]]
1343551339 2026-03-15T01:08:09Z Very Polite Person /* 21st century */ [[plasma brake]] -- red for later
1343551220 2026-03-15T01:07:00Z Very Polite Person /* Beamed-energy propulsion */ [[Earth's magnetic field|geomagnetic fields]]
1343551178 2026-03-15T01:06:36Z Very Polite Person /* Field-interaction in atmosphere or dense media */ [[Ion-propelled aircraft|ion devices]] driven by [[corona discharge]]
1343551093 2026-03-15T01:05:54Z Very Polite Person /* Field-interaction in atmosphere or dense media */ [[linear motor]]
1343551044 2026-03-15T01:05:33Z Very Polite Person /* Environment-fed electric propulsion */ [[atmospheric drag]]
1343550950 2026-03-15T01:05:01Z Very Polite Person /* Environment-coupled momentum exchange */ [[Spacecraft attitude control|attitude control]]
1343550875 2026-03-15T01:04:23Z Very Polite Person /* Electric and electromagnetic with carried propellant */ [[Electrical discharge|arc discharge]]
1343550804 2026-03-15T01:03:46Z Very Polite Person /* Electric and electromagnetic with carried propellant */ [[Ablation|ablating]]
1343550739 2026-03-15T01:03:18Z Very Polite Person /* Electric and electromagnetic with carried propellant */ [[Fluoropolymer|fluorinated polymer]]
1343550670 2026-03-15T01:02:43Z Very Polite Person /* Environment-coupled momentum exchange */ [[interstellar probe]]
1343550598 2026-03-15T01:02:01Z Very Polite Person /* Environment-coupled momentum exchange */ [[deorbit]]
1343550549 2026-03-15T01:01:39Z Very Polite Person /* 21st century */ Deorbit
1343550437 2026-03-15T01:00:44Z Very Polite Person /* Environment-coupled momentum exchange */ [[ionosphere]]
1343550369 2026-03-15T01:00:13Z Very Polite Person /* Environment-coupled momentum exchange */ [[orbital energy]]
1343550321 2026-03-15T00:59:48Z Very Polite Person /* Environment-coupled momentum exchange */ [[electromotive force]]
1343550254 2026-03-15T00:59:17Z Very Polite Person /* Environment-coupled momentum exchange */ [[circular orbits]]
1343550210 2026-03-15T00:58:48Z Very Polite Person /* Environment-coupled momentum exchange */ [[Heliocentric orbit|heliocentric]]
1343550135 2026-03-15T00:58:08Z Very Polite Person /* Environment-coupled momentum exchange */ [[Thin film|thin films]]
1343550012 2026-03-15T00:57:16Z Very Polite Person /* Environment-coupled momentum exchange */ [[areal density]]
1343549934 2026-03-15T00:56:44Z Very Polite Person /* Environment-coupled momentum exchange */ [[Alpha Centauri]]
1343549880 2026-03-15T00:56:16Z Very Polite Person /* 21st century */ [[conservation law]]
1343549808 2026-03-15T00:55:42Z Very Polite Person /* 1990s */ [[Falsifiability|falsifiable]]
1343549764 2026-03-15T00:55:18Z Very Polite Person /* Definitions */ [[exhaust velocity]]
1343549713 2026-03-15T00:54:53Z Very Polite Person /* Environment-coupled momentum exchange */ [[Solar radiation pressure|solar photon pressure]]
1343549589 2026-03-15T00:53:49Z Very Polite Person /* Arts and culture */ "[[tractor beam]]"
1343549541 2026-03-15T00:53:20Z Very Polite Person /* Arts and culture */ [[starship]]
1343549465 2026-03-15T00:52:44Z Very Polite Person /* Arts and culture */ [[faster-than-light]]
1343549403 2026-03-15T00:52:09Z Very Polite Person /* Environment-coupled momentum exchange */ [[electric sail]]
1343549343 2026-03-15T00:51:43Z Very Polite Person /* 21st century */ plasma brake image
1343548767 2026-03-15T00:47:14Z Very Polite Person /* 21st century */ [[very low Earth orbit]]
1343548712 2026-03-15T00:46:45Z Very Polite Person /* 21st century */ [[Vacuum energy|vacuum-energy]]
1343548637 2026-03-15T00:46:13Z Very Polite Person /* 21st century */ [[Wormhole|traversable wormholes]]
1343548563 2026-03-15T00:45:38Z Very Polite Person /* 21st century */ [[warp drive]]
1343548471 2026-03-15T00:45:05Z Very Polite Person /* 1990s */ [[guideway]]
1343548384 2026-03-15T00:44:31Z Very Polite Person /* 1990s */ [[Cold War]]
1343548284 2026-03-15T00:43:57Z Very Polite Person /* 1980s */ [[Superconductor|superconducting]]
1343548221 2026-03-15T00:43:29Z Very Polite Person /* 1980s */ [[reaction mass]]
1343548141 2026-03-15T00:42:52Z Very Polite Person /* 1980s */ [[heliogyro]]
1343548048 2026-03-15T00:42:22Z Very Polite Person /* 1980s */ [[Geostationary orbit|geostationary]]
1343547972 2026-03-15T00:41:47Z Very Polite Person /* 1980s */ [[orbital station-keeping]]
1343547684 2026-03-15T00:39:40Z Very Polite Person /* 1980s */ [[resistojets]]
1343547580 2026-03-15T00:38:48Z Very Polite Person /* 21st century */ [[Alfvén wave]]
1343547518 2026-03-15T00:38:17Z Very Polite Person /* 1960s-1970s */ [[electrodes]]
1343547459 2026-03-15T00:37:42Z Very Polite Person /* 1960s-1970s */ [[ramjets]]
1343547403 2026-03-15T00:37:14Z Very Polite Person /* 1960s-1970s */ [[working fluid]]
1343547318 2026-03-15T00:36:46Z Very Polite Person /* 1920s-1950s */ [[photon rocket]]
1343547206 2026-03-15T00:36:05Z Very Polite Person /* Pre-20th century to the 1910s */ [[cathode rays]]
1343547148 2026-03-15T00:35:34Z Very Polite Person /* Pre-20th century to the 1910s */ [[radiation pressure]]
1343522669 2026-03-14T21:18:59Z Artem.G /* Arts and culture */
1343518917 2026-03-14T20:50:42Z Very Polite Person attempt #2 to deduplicate wikilinks
1343513980 2026-03-14T20:17:09Z Very Polite Person Undid revision [[Special:Diff/1343513904|1343513904]] by [[Special:Contributions/Very Polite Person|Very Polite Person]] ([[User talk:Very Polite Person|talk]])
1343513904 2026-03-14T20:16:37Z Very Polite Person attempt #1 to deduplicate wikilinks
1343513761 2026-03-14T20:15:59Z Vycl1994
1343506544 2026-03-14T19:21:39Z Very Polite Person ce
1343504593 2026-03-14T19:09:48Z Very Polite Person /* 1920s-1950s */ Tsiolkovsky
1343504302 2026-03-14T19:07:45Z Very Polite Person caption tweaks
1343503405 2026-03-14T19:01:10Z Very Polite Person /* Demonstrated */ cde
1343503312 2026-03-14T19:00:32Z Very Polite Person /* Development and testing */ ce
1343503025 2026-03-14T18:58:38Z Very Polite Person /* Demonstrated and proposed systems */ updates
1343502230 2026-03-14T18:52:37Z Very Polite Person /* Environment-coupled momentum exchange */ [[speed of light]]
1343502121 2026-03-14T18:51:56Z Very Polite Person /* 1960s-1970s */ comma
1343502094 2026-03-14T18:51:41Z Very Polite Person /* 1960s-1970s */ -double word
1343501906 2026-03-14T18:50:10Z Very Polite Person /* 1990s */ Alongside these experimental programs, electric propulsion was also entering routine commercial service.
1343501808 2026-03-14T18:49:17Z Very Polite Person /* 1960s-1970s */ ce
1343501723 2026-03-14T18:48:31Z Very Polite Person /* 1960s-1970s */ ce
1343501658 2026-03-14T18:47:52Z Very Polite Person /* Field-interaction in atmosphere or dense media */ ce
1343501583 2026-03-14T18:47:11Z Very Polite Person /* Theoretical proposals */ ce
1343501486 2026-03-14T18:46:26Z Very Polite Person /* Environment-coupled momentum exchange */ ce
1343500989 2026-03-14T18:42:40Z Very Polite Person /* 1990s */ ce
1343500928 2026-03-14T18:42:19Z Very Polite Person /* 21st century */ ce
1343500870 2026-03-14T18:41:56Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1343500664 2026-03-14T18:40:28Z Very Polite Person /* Environment-coupled momentum exchange */ ce
1343500567 2026-03-14T18:39:47Z Very Polite Person /* Environment-coupled momentum exchange */ fix
1343500521 2026-03-14T18:39:25Z Very Polite Person /* Environment-coupled momentum exchange */ ce
1343500302 2026-03-14T18:38:01Z Very Polite Person /* Environment-coupled momentum exchange */ ce
1343500123 2026-03-14T18:36:46Z Very Polite Person /* 1980s */ used to maintain orbital position
1343500039 2026-03-14T18:36:17Z Very Polite Person /* 1980s */ fix link
1343499940 2026-03-14T18:35:24Z Very Polite Person /* 1980s */ ce
1343499814 2026-03-14T18:34:16Z Very Polite Person /* 1980s */ ce
1343499679 2026-03-14T18:33:12Z Very Polite Person /* 21st century */ ce
1343499492 2026-03-14T18:31:49Z Very Polite Person /* Beamed-energy and externally powered thrust */ image
1343498580 2026-03-14T18:25:49Z Very Polite Person /* 1960s-1970s */ ce
1343498410 2026-03-14T18:24:51Z Very Polite Person /* Electric and electromagnetic with carried propellant */ ce
1343498220 2026-03-14T18:23:14Z Very Polite Person Undid revision [[Special:Diff/1343498080|1343498080]] by [[Special:Contributions/Very Polite Person|Very Polite Person]] ([[User talk:Very Polite Person|talk]])
1343498080 2026-03-14T18:22:14Z Very Polite Person /* Environment-coupled momentum exchange */ ce
1343496406 2026-03-14T18:10:12Z Very Polite Person /* Environment-coupled momentum exchange */ ce
1343496135 2026-03-14T18:08:52Z Very Polite Person /* Environment-coupled momentum exchange */ ce
1343495885 2026-03-14T18:07:08Z Very Polite Person /* Environment-coupled momentum exchange */ ce
1343495338 2026-03-14T18:03:09Z Very Polite Person /* Environment-coupled momentum exchange */ ce
1343495231 2026-03-14T18:02:18Z Very Polite Person /* Electric and electromagnetic with carried propellant */ ce
1343495113 2026-03-14T18:01:16Z Very Polite Person /* Ambient plasma-wave propulsion */ ce
1343494914 2026-03-14T17:59:55Z Very Polite Person /* Definitions */ ce
1343494820 2026-03-14T17:59:03Z Very Polite Person /* 1960s-1970s */ ce
1343493915 2026-03-14T17:52:30Z Very Polite Person /* 1960s-1970s */ ce
1343493787 2026-03-14T17:51:38Z Very Polite Person /* 1960s-1970s */ This included ion and electroplasma thrusters with target specific impulse, a measure of propellant efficiency, of 5,000–10,000 seconds, assigning work to [[OKB-1]], [[Kurchatov Institute|the Kurchatov Institute]], and other named bureaus as part of a broader 1960–1967 [[Soviet Union]] space development plan.<ref name="USSR Decree 715-296 1960" />{{rp|27}}<ref name="Sutton Rockets 2017" />{{rp|33}}
1343490124 2026-03-14T17:25:22Z Very Polite Person /* Arts and culture */ Fiction magazines of this era also served as platforms for promoting claimed real-world propulsion devices.
1343490022 2026-03-14T17:24:48Z Very Polite Person /* 21st century */ As demonstrated systems accumulated flight heritage, research programs continued exploring more speculative coupling mechanisms.
1343489801 2026-03-14T17:23:31Z Very Polite Person /* 1990s */ European electric propulsion programs reached similar milestones in the years that followed.
1343489696 2026-03-14T17:22:55Z Very Polite Person /* 1990s */ Beamed-energy propulsion concepts also reached flight-test maturity during this period.
1343489496 2026-03-14T17:21:38Z Very Polite Person /* 1990s */ ce
1343489451 2026-03-14T17:21:23Z Very Polite Person /* 1990s */ The end of the Cold War also opened access to previously restricted Soviet electric propulsion technology.
1343489275 2026-03-14T17:20:25Z Very Polite Person /* 1960s-1970s */ While electromagnetic thrusters entered operational service, photon-pressure propulsion concepts also advanced through dedicated study programs.
1343488995 2026-03-14T17:18:52Z Very Polite Person /* 1960s-1970s */ Formal classification efforts during this period sought to organize the growing range of advanced propulsion concepts.
1343488724 2026-03-14T17:17:16Z Very Polite Person /* 1960s-1970s */ Alongside ion engine development, a distinct line of electromagnetic thruster research was advancing in the Soviet Union.
1343488520 2026-03-14T17:16:17Z Very Polite Person /* 1960s-1970s */ Electric propulsion research during this period expanded across multiple countries and institutional settings.
1343488448 2026-03-14T17:15:48Z Very Polite Person /* 1920s-1950s */ The postwar period saw growing institutional interest in electric propulsion within both military and civilian research programs.
1343488267 2026-03-14T17:14:43Z Very Polite Person /* 1920s-1950s */ While encyclopedic surveys were documenting the theoretical landscape, parallel experimental work was emerging in Europe.
1343405147 2026-03-14T02:49:57Z Very Polite Person /* 1960s-1970s */ remove rogue A
1343405021 2026-03-14T02:48:43Z Very Polite Person /* 21st century */ Related electrostatic sail concepts also moved into in-space technology-demonstration phases in the 2020s, with AuroraSat-1 launching in 2022 as a plasma-brake technology demonstrator and Foresail-1p launching in 2025 with a Plasma Brake experiment intended to enable the first-ever space measurements of [[Coulomb]] drag for [[Orbital mechanics|orbital change]].<ref name="NASA SOA propulsion 2024" /><ref name="Aalto Foresail-1p 2025" />
1343404873 2026-03-14T02:47:10Z Very Polite Person /* Environment-coupled momentum exchange */ In 2025, [[Aalto University]] in [[Finland]] reported the launch of Foresail-1p carrying a Plasma Brake experiment intended to enable the first-ever space measurements of [[Coulomb]] drag to change a satellite's orbit.<ref name="Aalto Foresail-1p 2025" />
1343404759 2026-03-14T02:45:58Z Very Polite Person /* Environment-coupled momentum exchange */ NASA's small-spacecraft propulsion survey described the electric sail and the closely related plasma brake as relatively immature environment-coupled propulsion technologies, and noted that AuroraSat-1, launched on May 5, 2022, served as a technology demonstration mission for a Plasma Brake module.<ref name="NASA SOA propulsion 2024" />
1343404609 2026-03-14T02:44:39Z Very Polite Person /* Environment-coupled momentum exchange */ Related electrostatic sail concepts also entered in-space technology-demonstration phases in the 2020s.
1343403685 2026-03-14T02:36:38Z Very Polite Person /* 21st century */ ESA's [[GOCE]] in 2009 and JAXA's [[Super Low Altitude Test Satellite]] "TSUBAME" (2017-2019) marked later electric-propulsion milestones by demonstrating continuous drag compensation and ion-engine-supported super-low-altitude operations in very low Earth orbit.
1343403157 2026-03-14T02:32:02Z Very Polite Person /* Environment-fed electric propulsion */ JAXA's [[Super Low Altitude Test Satellite]] (SLATS) "TSUBAME", launched on December 23 2017, transitioned to ion-engine orbit-keeping operations in April 2019 and later demonstrated maintenance of six orbital altitudes between 271.1 and 181.1 km, validating super-low-altitude Earth observation operations.<ref name="JAXA TSUBAME transition 2019" /><ref name="JAXA TSUBAME end 2019" />
1343402833 2026-03-14T02:29:12Z Very Polite Person /* Environment-fed electric propulsion */ Related operational milestones in very low Earth orbit preceded true atmosphere-breathing concepts. ESA's [[GOCE|Gravity Field and Steady-State Ocean Circulation Explorer]] (GOCE), launched on March 17, 2009, became the first-ever mission to fly drag free in low Earth orbit using an electric propulsion system that continually compensated atmospheric drag.<ref name="ESA GOCE intro" /><ref name="ESA GOCE drag free" />
1343401703 2026-03-14T02:18:25Z Very Polite Person /* 21st century */ ce
1343401188 2026-03-14T02:14:32Z Very Polite Person /* 21st century */ ESA and JAXA's [[BepiColombo]], launched in 2018, marked a later major milestone in solar electric propulsion when its Solar Electric Propulsion System began in-flight commissioning in November 2018.<ref name="ESA BepiColombo mission" /><ref name="ESA BepiColombo electric 2018" />
1343400457 2026-03-14T02:09:05Z Very Polite Person /* Environment-fed electric propulsion */ delink
1343400237 2026-03-14T02:07:19Z Very Polite Person /* Environment-coupled momentum exchange */ ce
1343399908 2026-03-14T02:04:36Z Very Polite Person /* Types */ image sizing
1343398893 2026-03-14T01:55:29Z Very Polite Person /* Definitions */ move image down and sizing
1343398568 2026-03-14T01:52:30Z Very Polite Person /* 1960s-1970s */ left align
1343354127 2026-03-13T19:30:58Z Very Polite Person /* 21st century */ NASA's [[Advanced Composite Solar Sail System]] (ACS3), launched on April 23, 2024, tested next-generation composite-boom solar-sail technology in orbit, and mission operators confirmed full sail deployment on August 29, 2024.<ref name="NASA ACS3 what-is" /><ref name="NASA ACS3 deploy 2024" />
1343353332 2026-03-13T19:24:13Z Very Polite Person /* References */ JPL Dawn mission archive
1343353263 2026-03-13T19:23:28Z Very Polite Person /* 21st century */ NASA's [[Dawn (spacecraft)|Dawn]] became the first spacecraft to orbit an object in the main [[asteroid belt]] at [[4 Vesta|Vesta]] in 2011, and the first to orbit a [[dwarf planet]] at [[Ceres (dwarf planet)|Ceres]] in 2015. Its [[ion thruster|ion propulsion]] system made Dawn the only spacecraft ever to orbit two extraterrestrial destinations.<ref name="JPL Dawn mission" /><ref name="NASA Dawn dwarf planet 2015" />
1343346833 2026-03-13T18:42:51Z Very Polite Person /* References */ ce
1343345012 2026-03-13T18:27:39Z Very Polite Person /* Demonstrated and proposed systems */ + add [[Pulsed inductive thruster]], [[SERT-II|Electrostatic ion engine (long-duration)]] and [[Magnetic sail|Magnetospheric plasma propulsion]]
1343343752 2026-03-13T18:18:46Z Very Polite Person /* 21st century */ SMART-1, launched in 2003, demonstrated solar electric primary propulsion in flight for ESA and carried the Hall thruster system that had been developed from late-1990s European work on commercial electric-propulsion applications and deep-space mission preparation.<ref name="Koppel SMART-1 EPS 2004" />{{rp|1,7}}<ref name="Racca SMART-1 1998" />{{rp|50-59}}
1343342605 2026-03-13T18:10:54Z Very Polite Person /* 1990s */ [[Hydrazine]] based [[arcjet rockets]] were deployed in 1993 on [[Telstar 401]], extending electrothermal electric propulsion into higher-performance commercial geostationary use.<ref name="Hoskins Aerojet 2013" />{{rp|1-3}}
1343342263 2026-03-13T18:08:41Z Very Polite Person /* 1980s */ Commercial electrothermal propulsion also entered operational satellite service during this period. Hydrazine resistojets began commercial geostationary north-south station-keeping with Intelsat V in 1980.<ref name="Martinez-Sanchez Pollard EP Overview 1998" />{{rp|688-689}}
1343337664 2026-03-13T17:37:24Z Very Polite Person /* 1980s */ A backup solar sail mission to [[Comet Encke]] was also considered in 1983.<ref name="Friedman Solar sailing 1978" />
1343337628 2026-03-13T17:37:02Z Very Polite Person /* 1980s */ Solar sail engineering also advanced institutionally during this period: JPL's Halley studies compared square and heliogyro sail architectures, with the latter favored for deployment,<ref name="Friedman Solar sailing 1978" /> while the World Space Foundation fabricated and ground-deployed a 20 m sail and built a 30 m sail stowed in a deployment structure.<ref name="Garner Solar Sail Summary 1999" />{{rp|2}}
1343324393 2026-03-13T15:49:19Z Very Polite Person /* 1990s */ split
1343324067 2026-03-13T15:46:07Z Very Polite Person /* 1990s */ By the late 1990s, ESA was already positioning solar electric primary propulsion as a key technology for future deep-space missions through [[SMART-1]], whose [[PPS-1350|PPS-1350-G Hall thruster]] was later developed in the [[CNES]] [[STENTOR (satellite)|Stentor satellite]] program and adapted from a geostationary station-keeping design.<ref name="Racca SMART-1 1998" />{{rp|50-59}}<ref name="Dumazert PPS-1350-G 2003" />{{rp|1-2}}<ref name="Koppel SMART-1 EPS 2004" />{{rp|1,7}}
1343321222 2026-03-13T15:20:01Z Very Polite Person /* 1990s */ Commercial electric propulsion also entered Western geostationary satellite operations in the 1990s, as [[Boeing 601|Hughes Boeing 601HP]] communications satellites began using gridded xenon ion thrusters (XIPS) for station-keeping in 1997.<ref name="Flightglobal XIPS 2000" /><ref name="Brophy success EP 2022" />{{rp|3}}
1343320027 2026-03-13T15:09:19Z Very Polite Person /* References */ Choueiri FP 2004-2 archive
1343319462 2026-03-13T15:05:14Z Very Polite Person /* 1960s-1970s */ In 1964, Ernst Stuhlinger published ''Ion Propulsion for Space Flight'', characterized by Choueiri as the first comprehensive book on electric rocket technology, marking the field's transition into a serious engineering discipline.<ref name="Choueiri FP 2004-2" />{{rp|2-3}}
1343286478 2026-03-13T11:03:47Z Arjayay Duplicate word removed
1343224101 2026-03-13T01:46:41Z Very Polite Person /* Background and history */ ce
1343221043 2026-03-13T01:19:57Z Very Polite Person /* Arts and culture */ [[Astounding Science Fiction]]
1343219664 2026-03-13T01:07:31Z Very Polite Person /* Background and history */ ce
1343163836 2026-03-12T17:16:27Z Very Polite Person /* 1960s-1970s */ NASA funded the [[Battelle Memorial Institute]] in 1973 under Jerome L. Wright to study solar sailing concepts for a [[Halley's Comet]] intercept; in 1976, a formal solar sail rendezvous proposal managed by [[Louis Friedman]] at the [[Jet Propulsion Laboratory]] was submitted to NASA, but the sail concept was dropped in 1977 in favor of [[solar electric propulsion]], and the comet mission itself was later canceled.<ref name="Matloff Photon Sail 2004" />{{rp|2}}
1343162234 2026-03-12T17:02:51Z Very Polite Person /* 1980s */ The 1980s were a major period of solar sailing research publication, with materials created by a variety of researchers globally, bookended by attempts in 1979 and 1992 by the World Space Foundation and the [[Columbus Quincentenary|Christopher Columbus Quincentenary Jubilee Commission]] to promote a solar sailing race to the moon.<ref name="Matloff Photon Sail 2004" />{{rp|1-2}}
1343161357 2026-03-12T16:54:50Z Very Polite Person /* 1960s-1970s */ NASA funded the [[Battelle Memorial Institute]] in 1973 under Jerome L. Wright to develop a proposal to intercept [[Halley's Comet]] with a solar sailing ship; the project ultimately switched to a solar-electric concept before the comet mission was finally canceled a decade later.<ref name="Matloff Photon Sail 2004" />{{rp|2}}
1343160244 2026-03-12T16:45:04Z Very Polite Person /* Background and history */ ce
1343159954 2026-03-12T16:42:52Z Very Polite Person /* Pre-20th century to the 1950s */ split again to ===Pre-20th century to the 1910s=== and ===1920s-1950s===
1343159389 2026-03-12T16:38:26Z Very Polite Person /* Pre-20th century to the 1950s */ In 1610, [[Johannes Kepler]] wrote ''Dissertatio cum Nuncio Sidereo'' (''Conversation with the Messenger from the Stars'') to [[Galileo Galilei]], in response to Galilei's own ''[[Sidereus Nuncius]]'', describing the idea of winds in space propelling craft like the winds of the seas:<ref name="Kepler Quotes" /><ref name="Rosen Kepler" />{{rp|39}}
1343157349 2026-03-12T16:21:08Z Very Polite Person /* Early 20th century to the 1950s */ rename now to ---> ===Pre-20th century to the 1950s===
1343157111 2026-03-12T16:19:08Z Very Polite Person /* Arts and culture */ The story, ''Aventures extraordinaires d'un savant russe'' (''The Extraordinary Adventures of a Russian Scientist'') was published between 1888-1896, which features a space flight from Earth's moon to [[Venus]] by means of photon propulsion via mirrors.<ref name="Miller Sail Gizmodo 2014-03-13" />
1343156877 2026-03-12T16:17:15Z Very Polite Person /* Arts and culture */ [[Colin R. McInnes]] in his 1999 book ''Solar Sailing'' highlighted a science fiction story from a century prior by [[Georges Le Faure]] and Henry de Graffigny about "mirror-propelled spacecraft" which may have been inspired by James Clerk Maxwell's 1873 research into pressure from electromagnetic forces and light, an early forebear of field propulsion.<ref name="Matloff Photon Sail 2004" />{{rp|1-2,48}}
1343155390 2026-03-12T16:04:49Z Very Polite Person /* Early 20th century to the 1950s */ Zander was reportedly inspired in this work by his colleague Tsilkovsky's own research on the topic.<ref name="Matloff Photon Sail 2004" />{{rp|2}}
1343154963 2026-03-12T16:01:24Z Very Polite Person /* Early 20th century to the 1950s */ In 1921, Tsilkovsky published ''Extension of Man into Outer Space'', further exploring photon-based propulsion concepts.<ref name="Matloff Photon Sail 2004" />{{rp|2}}
1343154566 2026-03-12T15:58:22Z Very Polite Person /* Early 20th century to the 1950s */ By 1905, [[Albert Einstein]] had [[Quantization (physics)|quantized]] Maxwell's findings to prove light particles could possess momentum.<ref name="Matloff Photon Sail 2004" />{{rp|2}}
1343154151 2026-03-12T15:54:58Z Very Polite Person /* Early 20th century to the 1950s */ The earliest appearance of field propulsion concepts appears just prior to the 20th century, when [[James Clerk Maxwell]] demonstrated in 1873 that [[electromagnetic radiation]] should be able to create pressure on physical surfaces.<ref name="Matloff Photon Sail 2004" />{{rp|1-2}}
1343077150 2026-03-12T03:21:30Z Very Polite Person /* Types */ split
1343076766 2026-03-12T03:18:08Z Very Polite Person trim caption
1343076659 2026-03-12T03:17:10Z Very Polite Person The [[Lorentz force]] acting on fast-moving charged [[Elementary particle|particles]] in a [[bubble chamber]]. Positive and negative charge trajectories curve in opposite directions. The Lorentz force plays a key role in several field propulsion technologies, including [[Hall-effect thrusters]], [[Magnetoplasmadynamic thruster|magnetoplasmadynamic thrusters]], and [[Space tether missions#TSS-1 mission|electrodynamic tethers]].
1343076124 2026-03-12T03:12:13Z Very Polite Person And found our #3 image for the lede
1343075658 2026-03-12T03:07:21Z Very Polite Person /* References */ fix ref
1343074922 2026-03-12T03:01:10Z Very Polite Person /* Definitions */ Artist's impression of [[solar wind]] flow around Earth's [[magnetosphere]].
1343074588 2026-03-12T02:59:00Z Very Polite Person /* 1990s */ Artist concept of [[Deep Space 1]] firing its [[ion thrusters]] in space.
1343074059 2026-03-12T02:55:01Z Very Polite Person /* 21st century */ [[IKAROS]] (Interplanetary Kite-craft Accelerated by Radiation Of the Sun), launched by the [[JAXA|Japan Aerospace Exploration Agency]] (JAXA) on May 21, 2010, was the first spacecraft to use a [[solar sail]] as it's main propulsion system.<ref name="NASA Chronicle 2018" />
1343072651 2026-03-12T02:42:15Z Very Polite Person /* Background and history */ correct section
1343072502 2026-03-12T02:40:44Z Very Polite Person /* 1960s-1970s */ Within decades, hundreds would fly in space.<ref name="Kozubsky SPD Trudy MAI 2012-12-10" />{{rp|2,6}}
1343003643 2026-03-11T18:33:13Z Very Polite Person /* 1990s */ ce
1343003480 2026-03-11T18:32:02Z Very Polite Person /* 1990s */ ce
1343003141 2026-03-11T18:29:41Z Very Polite Person /* 1980s-1990s */ split 80s and 90s
1343002394 2026-03-11T18:25:00Z Very Polite Person /* 1980s-1990s */ That work fed into the later [[Ballistic Missile Defense Organization]] Russian Hall Electric Thruster Technology (RHETT) effort to move Hall thruster technology toward Western operational use.<ref name="Sankovic Caveny RHETT 1997" />{{rp|1}}
1343002209 2026-03-11T18:23:33Z Very Polite Person /* 1980s-1990s */ The report laid out a second program phase in which thrusters would be brought to the United States for testing toward possible Western use.<ref name="Brophy JPL SPT Russia 1992" />{{rp|1,4}}<ref name="Sankovic Hamley Haag SPT-100 LeRC 1993" />{{rp|1}}
1343002133 2026-03-11T18:23:07Z Very Polite Person /* 1980s-1990s */ Brophy's subsequent JPL report said the measured performance appeared close to the advertised values, noted claims that more than fifty lower-power SPT units had already flown on Russian spacecraft.<ref name="Brophy JPL SPT Russia 1992" />{{rp|1,4}}
1343002037 2026-03-11T18:22:28Z Very Polite Person /* 1980s-1990s */ In 1991, U.S. electric propulsion specialists evaluated the Russian SPT-100 at the [[Keldysh Research Center|Scientific-Research Institute of Thermal Processes]] in Moscow and at Fakel in Kaliningrad using U.S. instrumentation.<ref name="Brophy JPL SPT Russia 1992" />{{rp|1}}
1343001697 2026-03-11T18:20:08Z Very Polite Person /* References */ +5
1342991819 2026-03-11T17:20:32Z Very Polite Person /* 1980s-1990s */ By the late 1980s, magnetic sails emerged as a proposed propellantless concept that would use a superconducting loop to deflect the solar wind or interstellar plasma, and thereby generate thrust or drag without expelling onboard reaction mass.<ref name="ZubrinAndrews1991" />{{rp|197-198,203}}
1342988470 2026-03-11T17:03:38Z Very Polite Person /* 1980s-1990s */ ce
1342987919 2026-03-11T17:00:37Z Very Polite Person /* 1980s-1990s */ This is Reference #100 -> In 1998, [[Deep Space 1]] became the first U.S. space mission to use an ion thruster as its primary means of propulsion, validating [[NASA]]'s [[NASA Solar Technology Application Readiness|NSTAR solar electric propulsion system]] in long-duration flight.<ref name="Arrighi NASA Deep Space 1 2019-12-18" />
1342980591 2026-03-11T16:15:56Z Very Polite Person /* See also */ + [[New Millennium Program]]
1342980060 2026-03-11T16:12:15Z Very Polite Person /* 1980s-1990s */ The [[Plasma propulsion engine|Plasma Motor Generator]] flight in 1993 was later described by NASA as the most sophisticated and most successful electrodynamic-tether mission yet flown, and TSS-1R in 1996 validated high-voltage electrodynamic behavior in orbit.<ref name="NASA tether 1999-03-13" /><ref name="Cosmo Lorenzini SR 1997" />{{rp|153-155,188}}
1342979411 2026-03-11T16:07:54Z Very Polite Person /* 1980s-1990s */ Electrodynamic tether work matured across the decade. NASA described it as the first tethered-satellite mission and the longest structure yet flown in space.<ref name="Cosmo Lorenzini SR 1997" />{{rp|153-155}}
1342978981 2026-03-11T16:05:48Z Very Polite Person /* 1980s-1990s */ In 1997, the laser-propelled [[Lightcraft]] was successfully flown in a series of experiments at the High Energy Laser Systems Test Facility at [[White Sands Missile Range]] under a joint USAF/NASA flight demonstration program.<ref name="Lightcraft AIAA 1998" />{{rp|1}}<ref name="PM Myrabo 1995" />{{rp|44-45}}
1342574379 2026-03-09T18:19:26Z Very Polite Person /* Demonstrated and proposed systems */ order
1342574086 2026-03-09T18:17:36Z Very Polite Person fix ref
1342569497 2026-03-09T17:52:13Z Very Polite Person /* 1960s-1970s */ At Gießen, Horst Löb's group began development of radio-frequency ion thrusters of the RIT type, starting with the conception, laboratory model, and first tests of the RIT-10; the prototype was further improved through the 1960s and transferred to industry for qualification in 1970.<ref name="Lob Giessener FP 2008" />{{rp|41}}
1342569343 2026-03-09T17:51:24Z Very Polite Person /* 1960s-1970s */ In [[West Germany]], electric-propulsion development also proceeded from 1960 at DLR institutes in [[Stuttgart]] and [[Braunschweig]] and at the [[University of Giessen]].<ref name="Lob Giessener FP 2008" />{{rp|37}}
1342569241 2026-03-09T17:50:44Z Very Polite Person /* 1980s-1990s */ The Gießen RIT line later reached flight application on the [[European Space Agency]]'s [[Artemis (satellite)|Artemis]] satellite, launched in 2001, which carried two German RIT-10 thrusters for station-keeping.<ref name="Lob Giessener FP 2008" />{{rp|42}}
1342569077 2026-03-09T17:49:54Z Very Polite Person /* 1980s-1990s */ The [[European Space Agency]]'s [[Artemis (satellite)|Artemis satellite]] using RIT-10 thrusters was launched in 2001.<ref name="Lob Giessener FP 2008" />{{rp|42}}
1342568812 2026-03-09T17:48:17Z Very Polite Person /* Electric and electromagnetic with carried propellant */ The Gießen RIT line used a radio-frequency, electrode-less xenon discharge, a design Löb described as avoiding electrode-related wear while offering high efficiency and high exhaust velocity.<ref name="Lob Giessener FP 2008" />{{rp|40}}
1342567109 2026-03-09T17:39:02Z Very Polite Person /* References */ + <ref name="Lob Giessener FP 2008">
1342563777 2026-03-09T17:21:35Z Very Polite Person /* 1960s-1970s */ + [[SERT 1]] image
1342559891 2026-03-09T16:58:18Z Very Polite Person /* Demonstrated and proposed systems */ + [[Hall-effect thruster]] 1972
1342559367 2026-03-09T16:54:57Z Very Polite Person /* 1960s-1970s */ This included ion and electroplasma thrusters with target specific impulse of 5,000–10,000 seconds, assigning work to [[OKB-1]], [[Kurchatov Institute|the Kurchatov Institute]], and other named bureaus as part of a broader 1960–1967 [[Soviet Union]] space development plan.<ref name="USSR Decree 715-296 1960" />{{rp|27}}
1342559314 2026-03-09T16:54:35Z Very Polite Person /* 1960s-1970s */ A June 1960 decree of the [[Central Committee of the Communist Party of the Soviet Union|Central Committee]] and [[Council of Ministers of the Soviet Union|Council of Ministers]] (No. 715-296), declassified after the Soviet period, directed the development of "space electric rocket engines".<ref name="USSR Decree 715-296 1960" />{{rp|1-2}}
1342558888 2026-03-09T16:51:55Z Very Polite Person /* References */ +<ref name="USSR Decree 715-296 1960">
1342558771 2026-03-09T16:51:16Z Very Polite Person /* Notes */ cut
1342557472 2026-03-09T16:44:17Z Very Polite Person /* 1980s-1990s */ After initial Russian usage from the 1970s, beginning in the 1990s qualified SPT units entered service on American and European spacecraft as well.<ref name="Kozubsky SPD Trudy MAI 2012-12-10" />{{rp|2,6}}
1342557269 2026-03-09T16:43:06Z Very Polite Person /* 21st century */ By 2012, more than 270 Hall-effect SPT units had operated on over 60 Russian spacecraft.<ref name="Kozubsky SPD Trudy MAI 2012-12-10" />{{rp|2,6}}
1342556970 2026-03-09T16:41:22Z Very Polite Person /* 1960s-1970s */ The first SPT was tested in orbit aboard a [[Meteor (satellite)|Meteor]] spacecraft in 1972, with corrective propulsion units operating on further Meteor missions through 1980.<ref name="Kozubsky SPD Trudy MAI 2012-12-10" />{{rp|2–3}}
1342556779 2026-03-09T16:40:12Z Very Polite Person /* 1960s-1970s */ Also in the 1960s, A. I. Morozov proposed the [[Hall-effect thruster|stationary plasma thruster]] (SPT), a Hall-effect device that accelerates ionized propellant using crossed electric and magnetic fields.<ref name="Morozov PMTF 1968" />{{rp|19}}<ref name="Kozubsky SPD Trudy MAI 2012-12-10" />{{rp|3}}
1342556267 2026-03-09T16:36:56Z Very Polite Person /* 1960s-1970s */ 2012-12-10
1342556174 2026-03-09T16:36:23Z Very Polite Person /* 1960s-1970s */ Following the Zond 2 demonstration, pulsed plasma thruster development was transferred from the [[Kurchatov Institute]] to [[Fakel (company)|OKB Fakel]], whose "Globus" pulsed propulsion unit flew in 1968.<ref name="Kozubsky SPD Trudy MAI 2012-12-10" />{{rp|2}}<ref name="Kazeev PPT Trudy MAI" />{{rp|1}}
1342555787 2026-03-09T16:33:54Z Very Polite Person /* References */ + <ref name="Kazeev PPT Trudy MAI 2012-12-10">
1342554620 2026-03-09T16:26:17Z Very Polite Person /* Electric and electromagnetic with carried propellant */ By 2012, more than 270 SPD-70 and SPD-100 thrusters had operated on over 60 Russian spacecraft, and beginning in the 1990s qualified SPT units entered service on American and European spacecraft as well.<ref name="Kozubsky SPD Trudy MAI 2012-12-10" />{{rp|2}}
1342554564 2026-03-09T16:25:58Z Very Polite Person /* Electric and electromagnetic with carried propellant */ The first SPT was tested in space aboard a [[Meteor (satellite)|Meteor]] spacecraft launched in December 1971, with orbital firings conducted between February and June 1972; subsequent corrective propulsion units operated on further Meteor missions through 1980.<ref name="Kozubsky SPD Trudy MAI 2012-12-10" />{{rp|3}}
1342554480 2026-03-09T16:25:31Z Very Polite Person /* References */ + <ref name="Kozubsky SPD Trudy MAI 2012-12-10">
1342552878 2026-03-09T16:15:18Z Very Polite Person /* Electric and electromagnetic with carried propellant */ Hall effect here
1342552791 2026-03-09T16:14:40Z Very Polite Person /* 1960s-1970s */ wrong place
1342552432 2026-03-09T16:12:38Z Very Polite Person /* References */ + <ref name="Morozov PMTF 1968">
1342551995 2026-03-09T16:10:24Z Very Polite Person /* 1960s-1970s */ [[Hall-effect thruster|Stationary plasma thrusters]] (SPT), also called Hall-effect thrusters, accelerate ionized propellant (typically [[xenon]]) using crossed electric and magnetic fields with a closed electron drift.<ref name="Morozov PMTF 1968" />{{rp|19-22}} The concept was proposed by A. I. Morozov in the early 1960s, and a 1968 paper on near-wall conductivity in strongly magnetized plasma provided key theoretical grounding for the discharge channel physics.<ref name="Mor
1342546823 2026-03-09T15:32:03Z Very Polite Person /* Early 20th century to the 1950s */ ce
1342197899 2026-03-07T16:54:48Z Very Polite Person /* Early 20th century to the 1950s */ <ref name="Radd ARS 1945" />{{rp|28-29}}
1342194843 2026-03-07T16:27:36Z Very Polite Person /* Early 20th century to the 1950s */ In the same monograph, Israel Levitt, director of the Institute's Fels Planetarium, described solar propulsion methods including [[Krafft Arnold Ehricke]]'s solar thermal concepts, [[Richard Garwin]]'s radiation pressure sail proposals, and photon rocket research by Kurl Stanukovitch of Russia.<ref name="Franklin FP Levitt 1957" />{{rp|189–190,191–192,192–193}}
1342193857 2026-03-07T16:19:34Z Very Polite Person /* Early 20th century to the 1950s */ In the same monograph, Israel Levitt, director of the Institute's Fels Planetarium, described [[Krafft Arnold Ehricke]] and [[Richard Garwin]]'s distinct proposals for solar sail systems as well as photon rocket research by Kurl Stanukovitch of Russia.<ref name="Franklin FP Levitt 1957" />{{rp|191-192,192-193}}
1342189433 2026-03-07T15:43:52Z Very Polite Person update Ritchey
1342188431 2026-03-07T15:35:15Z Very Polite Person /* Early 20th century to the 1960s */ ce
1342188387 2026-03-07T15:34:51Z Very Polite Person /* Early 20th century to the 1960s */ ce
1342188326 2026-03-07T15:34:14Z Very Polite Person /* Early 20th century to the 1960s */ split
1342052119 2026-03-06T18:12:54Z Very Polite Person /* Early 20th century to the 1960s */ ce
1342051943 2026-03-06T18:11:51Z Very Polite Person /* References */ <ref name="Rynin Vol 4 1929"> & <ref name="Rynin Vol 9 1932"> comment out for now
1342051741 2026-03-06T18:10:27Z Very Polite Person /* Early 20th century to the 1960s */ Rynin observed that the work surveyed in his encyclopedia "clearly shows that different people in different countries independently came to the same conclusion" regarding the feasibility of interplanetary travel.<ref name="Rynin Vol 8 1932" />{{rp|2}}
1342051168 2026-03-06T18:07:01Z Very Polite Person /* Early 20th century to the 1960s */ Rynin's first volume, ''Dreams, legends, and early fantasies'' (1928), organized spacecraft energy sources into three categories: energy transmitted from Earth to the vehicle, energy carried onboard, and energy derived from outer space; the last including "radiation pressure to bear on special large screens around the vehicle," an explicit description of photon-pressure propulsion.<ref name="Rynin Vol 1 1928" />
1342050841 2026-03-06T18:04:42Z Very Polite Person /* Early 20th century to the 1960s */ Its coverage included radiation-pressure propulsion and beamed-energy concepts,<ref name="Rynin Vol 1 1928" /> and the work of Lebedev, Tsiolkovsky, Goddard, [[Hermann Oberth]], and [[Robert Esnault-Pelterie]].<ref name="Rynin Vol 8 1932" />{{rp|332–333}}
1342050599 2026-03-06T18:03:08Z Very Polite Person /* Early 20th century to the 1960s */ Between 1928 and 1932, [[Nikolai Rynin]] published ''Mezhplanetnye Soobshcheniya'' (''Interplanetary Flight and Communication''), a nine-volume Russian-language encyclopedia that the [[National Air and Space Museum]] described as the first encyclopedia on the history and theory of aerospace technology and spaceflight.<ref name="NASM Rynin" />
1342049652 2026-03-06T17:56:29Z Very Polite Person /* Early 20th century to the 1960s */ <ref name="Rynin Vol 8 1932" />{{rp|332-333}}
1342049267 2026-03-06T17:54:08Z Very Polite Person /* References */ add for [[Nikolai Rynin]] +4, <ref name="Rynin Vol 1 1928"> <ref name="Rynin Vol 4 1929"> <ref name="Rynin Vol 8 1932"> <ref name="Rynin Vol 9 1932"> and +1 <ref name="NASM Rynin"> [[National Air and Space Museum]]
1342004407 2026-03-06T12:05:09Z Rodw Disambiguating links to [[Encyclopedia of Science Fiction]] (link changed to [[The Encyclopedia of Science Fiction]]) using [[User:Qwertyytrewqqwerty/DisamAssist|DisamAssist]].
1342004263 2026-03-06T12:03:40Z Rodw Disambiguating links to [[George Tucker]] (link changed to [[George Tucker (author)]]) using [[User:Qwertyytrewqqwerty/DisamAssist|DisamAssist]].
1342004181 2026-03-06T12:02:47Z Rodw Disambiguating links to [[A Voyage to the Moon]] (link changed to [[A Voyage to the Moon (Tucker novel)]]) using [[User:Qwertyytrewqqwerty/DisamAssist|DisamAssist]].
1341962692 2026-03-06T04:56:50Z Very Polite Person /* Demonstrated and proposed systems */ dupe
1341962606 2026-03-06T04:55:44Z Very Polite Person /* Demonstrated and proposed systems */ try a different sorting, may be cleaner
1341952204 2026-03-06T03:05:36Z Very Polite Person /* Early 20th century to the 1960s */ At the [[International Congress of Physics]] in 1900, [[Pyotr Lebedev]] presented ''Les forces de Maxwell-Bartoli dues à la pression de la lumière'', reporting experimental measurements of radiation pressure and providing the first quantitative confirmation of [[James Clerk Maxwell]]'s prediction that light exerts pressure on matter.<ref name="Lebedev FP 1900"/>{{rp|133-140}}
1341950647 2026-03-06T02:50:55Z Very Polite Person /* Early 20th century to the 1960s */ ''Перелеты на другие планеты'' (''Flights to Other Planets'') by [[Friedrich Zander]] was published in 1924 in ''Техника и жизнь'', a Russian science journal, describing concepts to achieve interplanetary flight by use of light-propelled "screens made of extremely thin sheets".<ref name="Zander FP 1924" />
1341940214 2026-03-06T01:16:28Z Very Polite Person /* Definitions */ ce
1341940138 2026-03-06T01:15:36Z Very Polite Person /* Definitions */ ce
1341939834 2026-03-06T01:12:39Z Very Polite Person /* Definitions */ ce
1341939650 2026-03-06T01:11:00Z Very Polite Person /* Definitions */ scope sourcing
1341902994 2026-03-05T20:58:28Z Very Polite Person /* Arts and culture */ ce
1341893611 2026-03-05T20:00:49Z Very Polite Person /* Arts and culture */ ce
1341892709 2026-03-05T19:55:21Z Very Polite Person /* References */ Kaplan May 2016 & Trautner Model 2022 temp comment out
1341890987 2026-03-05T19:42:00Z Very Polite Person /* top */ ce
1341890357 2026-03-05T19:37:31Z Very Polite Person /* Definitions */ ce
1341889546 2026-03-05T19:31:57Z Very Polite Person /* Demonstrated and proposed systems */ 2010 > 2014
1341889150 2026-03-05T19:29:20Z Very Polite Person /* Definitions */ In twentieth century contractor and program frameworks, "field" denoted one of three advanced-propulsion headings alongside "thermal" and "photon," encompassing electromagnetic thrusters that still expel carried propellant;<ref name="Myrabo NASA JPL Beam/Field Concepts 1983" />{{rp|26}} later usage, as in NIAC studies of environment-coupled momentum exchange, restricts the term to systems that derive thrust from external fields or media without expelling onboard reaction mass.<
1341886557 2026-03-05T19:10:38Z Very Polite Person /* Environment-coupled momentum exchange */ delink
1341886467 2026-03-05T19:10:04Z Very Polite Person /* Arts and culture */ delink
1341883097 2026-03-05T18:44:25Z Very Polite Person /* top */ Field propulsion concepts have also appeared extensively in science fiction, in many cases predating or paralleling the technical research, and have occasionally influenced it directly, as when physicist [[Miguel Alcubierre]]'s warp metric was inspired by ''[[Star Trek]]'' terminology.
1341882695 2026-03-05T18:41:34Z Very Polite Person /* References */ ce
1341882276 2026-03-05T18:38:33Z Very Polite Person /* Arts and culture */ + add new section here and +twenty-four (24) new additional sources.
1341719578 2026-03-04T17:38:52Z Guy Macon Added Wikilink to first mention on Yamato 1. Article is looking great, BTW.
1341629651 2026-03-04T04:52:22Z Very Polite Person /* References */ + <ref name="Getty Ritchey">
1341629601 2026-03-04T04:51:59Z Very Polite Person /* Early 20th century to the 1960s */ [[The Franklin Institute]]'s astronautics lecture series in 1958 featured H.W. Ritchey, vice-president of [[Thiokol]] and head of their rocket program,<ref name="Getty Ritchey" /> who highlighted a 'Field Propulsion' illustration, describing propulsion 'by the use of fields' as a way to avoid an [[Jet engine|exhaust jet]].<ref name="Franklin FP 1957" />{{rp|46-47}} U.S. Air Force general Donald L. Putt, who led [[Operation Paperclip]] after [[World War II]],
1341628731 2026-03-04T04:46:35Z Very Polite Person /* References */ fix
1341628585 2026-03-04T04:45:42Z Very Polite Person /* References */ Franklin author, HW Ritchey
1341626302 2026-03-04T04:29:31Z Very Polite Person /* 21st century */ ce
1341626159 2026-03-04T04:28:20Z Very Polite Person /* 21st century */ broken wikilink
1341626131 2026-03-04T04:28:04Z Very Polite Person /* 21st century */ ce
1341625230 2026-03-04T04:21:59Z Very Polite Person /* Demonstrated and proposed systems */ just years is fine
1341620664 2026-03-04T03:50:58Z Very Polite Person /* See also */ -1, in body
1341620595 2026-03-04T03:50:23Z Very Polite Person /* See also */ -2, in body
1341618841 2026-03-04T03:38:58Z Very Polite Person /* References */ + <ref name="Putt NASM">
1341618780 2026-03-04T03:38:32Z Very Polite Person /* Early 20th century to the 1960s */ U.S. Air Force general Donald L. Putt, who led [[Operation Paperclip]] after [[World War II]],<ref name="Putt NASM" /> predicted that upcoming spacecraft would deploy "photo or ion field-type propulsion".<ref name="FP Globe 1958-05-31" />{{rp|6}}
1341600200 2026-03-04T01:42:34Z Very Polite Person /* Demonstrated and proposed systems */ ce
1341592353 2026-03-04T00:56:06Z Very Polite Person /* Demonstrated and proposed systems */ [[Air-Rail Link#Maglev|Birmingham Airport Maglev]]
1341592021 2026-03-04T00:54:22Z Very Polite Person /* Demonstrated and proposed systems */ [[MIT EAD Airframe Version 2|MIT EHD aircraft]]
1341582944 2026-03-04T00:01:12Z Very Polite Person /* References */ +2
1341582635 2026-03-03T23:59:39Z Very Polite Person /* Demonstrated and proposed systems */ add table
1341571420 2026-03-03T22:49:42Z Very Polite Person /* References */ +1
1341571362 2026-03-03T22:49:18Z Very Polite Person /* 1980s-1990s */ In 1997, the [[Lightcraft]] technology for laser-propelled flight was successfully demonstrated.<ref name="PM Myrabo 1995" />{{rp|44-45}}
1341553928 2026-03-03T21:17:39Z Very Polite Person /* Beamed-energy propulsion */ [[Air Force Research Laboratory]]
1341542192 2026-03-03T20:11:04Z ActivelyDisinterested Cleared CS1 messages, ce, using reflist with list defined references is deprecated
1341535397 2026-03-03T19:23:02Z ActivelyDisinterested /* Background and history */ Templates before images [[MOS:SECTIONLOC]]
1341509986 2026-03-03T16:10:03Z Very Polite Person /* top */ ce
1341509000 2026-03-03T16:03:27Z Very Polite Person /* Background and history */ ce
1341508881 2026-03-03T16:02:33Z Very Polite Person /* Background and history */ ce
1341424545 2026-03-03T04:06:38Z Very Polite Person /* Beamed-energy and externally powered thrust */ errant also
1341424246 2026-03-03T04:04:56Z Very Polite Person /* Early 20th century to the 1960s */ image
1341423603 2026-03-03T04:00:30Z Very Polite Person /* Background and history */ lede remnants here
1341423425 2026-03-03T03:59:18Z Very Polite Person hopefully last big lede revamp
1341422438 2026-03-03T03:51:14Z Very Polite Person /* 21st century */ ce
1341422399 2026-03-03T03:50:49Z Very Polite Person /* 1960s-1970s */ ce
1341422238 2026-03-03T03:49:45Z Very Polite Person /* 21st century */ ce
1341422078 2026-03-03T03:48:22Z Very Polite Person /* 1980s-1990s */ ce
1341421897 2026-03-03T03:46:46Z Very Polite Person /* Beamed-energy and externally powered thrust */ Czysz and Bruno also
1341421605 2026-03-03T03:44:16Z Very Polite Person /* Definitions */ this goes here now
1341421501 2026-03-03T03:43:11Z Very Polite Person /* Scope and terminology */ cut
1341421266 2026-03-03T03:40:57Z Very Polite Person /* Theoretical proposals */ ce
1341421246 2026-03-03T03:40:42Z Very Polite Person /* Beamed-energy propulsion */ ce
1341421204 2026-03-03T03:40:03Z Very Polite Person /* Definitions */ ce
1341420897 2026-03-03T03:37:37Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1341420776 2026-03-03T03:36:26Z Very Polite Person /* Beamed-energy and externally powered thrust */ ce
1341420463 2026-03-03T03:34:24Z Very Polite Person /* Electric and electromagnetic with carried propellant */ ce
1341420086 2026-03-03T03:32:06Z Very Polite Person /* Environment-coupled momentum exchange */ ce
1341355514 2026-03-02T19:39:50Z Very Polite Person lede tweaks
1341350096 2026-03-02T18:58:08Z Very Polite Person /* Electric and electromagnetic with carried propellant */ ce, hair cut
1341348816 2026-03-02T18:47:51Z Very Polite Person /* 21st century */ ce
1341346012 2026-03-02T18:27:53Z Very Polite Person /* Beamed-energy and externally powered thrust */ ce
1341345928 2026-03-02T18:27:12Z Very Polite Person /* 1960s-1970s */ ce
1341345763 2026-03-02T18:25:43Z Very Polite Person /* Early 20th century to the 1960s */ ce
1341345521 2026-03-02T18:23:44Z Very Polite Person /* Early 20th century to the 1960s */ ce
1341344328 2026-03-02T18:15:22Z Very Polite Person /* Ambient plasma-wave propulsion */ ce
1341344298 2026-03-02T18:15:07Z Very Polite Person /* Environment-coupled momentum exchange */ ce
1341344171 2026-03-02T18:14:19Z Very Polite Person
1341344072 2026-03-02T18:13:30Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1341343988 2026-03-02T18:12:51Z Very Polite Person ce
1341343559 2026-03-02T18:09:22Z Very Polite Person /* 1960s-1970s */ ce
1341343498 2026-03-02T18:08:49Z Very Polite Person /* Beamed-energy propulsion */ ce
1341343280 2026-03-02T18:07:05Z Very Polite Person /* Environment-coupled momentum exchange */ ce
1341343244 2026-03-02T18:06:45Z Very Polite Person /* Scope and terminology */ ce
1341343086 2026-03-02T18:05:06Z Very Polite Person /* Scope and terminology */ ce
1341343063 2026-03-02T18:04:48Z Very Polite Person /* Scope and terminology */ ce
1341343029 2026-03-02T18:04:29Z Very Polite Person /* Definitions */ ce
1341342966 2026-03-02T18:03:56Z Very Polite Person /* Electric and electromagnetic with carried propellant */ ce
1341342801 2026-03-02T18:02:27Z Very Polite Person /* Electric and electromagnetic with carried propellant */ ce
1341342555 2026-03-02T18:00:38Z Very Polite Person /* Definitions */ ce
1341342413 2026-03-02T17:59:41Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1341342252 2026-03-02T17:58:38Z Very Polite Person /* Theoretical proposals */ ce
1341342183 2026-03-02T17:58:13Z Very Polite Person /* Theoretical proposals */ ce
1341341962 2026-03-02T17:56:20Z Very Polite Person /* Definitions */ ce
1341341671 2026-03-02T17:54:23Z Very Polite Person /* Beamed-energy propulsion */ ce
1341340526 2026-03-02T17:49:16Z Very Polite Person /* Electric and electromagnetic with carried propellant */ ce
1341336623 2026-03-02T17:19:25Z Very Polite Person /* Scope and terminology */ ce
1341336566 2026-03-02T17:18:57Z Very Polite Person /* Scope and terminology */ ce
1341336423 2026-03-02T17:17:52Z Very Polite Person /* 1980s-1990s */ ce
1341336267 2026-03-02T17:16:46Z Very Polite Person /* Theoretical proposals */ ce
1341335890 2026-03-02T17:14:31Z Very Polite Person /* Theoretical proposals */ ce
1341335726 2026-03-02T17:13:27Z Very Polite Person /* Theoretical proposals */ ce
1341335638 2026-03-02T17:12:54Z Very Polite Person /* Theoretical proposals */ ce
1341335504 2026-03-02T17:11:53Z Very Polite Person /* Environment-coupled momentum exchange */ ce
1341335158 2026-03-02T17:09:30Z Very Polite Person /* 1960s-1970s */ {{rp|I-1,25–26}}
1341335046 2026-03-02T17:08:39Z Very Polite Person /* Beamed-energy propulsion */ ce
1341334977 2026-03-02T17:08:03Z Very Polite Person /* Beamed-energy propulsion */ ce
1341334920 2026-03-02T17:07:30Z Very Polite Person /* Beamed-energy propulsion */ ce
1341334699 2026-03-02T17:05:47Z Very Polite Person /* Scope and terminology */ ce
1341334669 2026-03-02T17:05:26Z Very Polite Person /* Scope and terminology */ ce
1341333316 2026-03-02T16:55:11Z Very Polite Person /* Field-interaction in atmosphere or dense media */ image - [[SCMaglev]]
1341332825 2026-03-02T16:51:26Z Very Polite Person images shuffle
1341330617 2026-03-02T16:36:14Z Very Polite Person image placements
1341330353 2026-03-02T16:34:34Z Very Polite Person /* Early 20th century to the 1960s */ image
1341328655 2026-03-02T16:23:09Z Very Polite Person ce
1341327351 2026-03-02T16:13:23Z Very Polite Person /* top */ ce; this isn't about reactionless drives and don't need lede-level diclaimers.
1341242177 2026-03-02T04:05:58Z Very Polite Person /* top */ remove equivalent of tech debt from outdated... IKAROS et al and others are interplanetary, that's what I get for trying to build by sources chronologically at first to keep things extra tight
1341183004 2026-03-01T22:47:44Z Very Polite Person /* History of research and programs */ ce
1341182963 2026-03-01T22:47:29Z Very Polite Person /* References */ ce
1341182621 2026-03-01T22:45:15Z Very Polite Person /* References */ ce
1341182406 2026-03-01T22:43:50Z Very Polite Person /* References */ remove my months of "double checked xyz" hidden notes for working, keep two <!-- hidden sources to check later again
1341180955 2026-03-01T22:34:47Z Very Polite Person tweak lede
1340919797 2026-02-28T13:21:56Z Arjayay Duplicate word removed
1340801752 2026-02-27T19:52:10Z Very Polite Person /* Background */ ce
1340801393 2026-02-27T19:49:10Z Very Polite Person /* History of research and programs */ ce
1340801148 2026-02-27T19:47:08Z Very Polite Person /* 1960s-1970s */ ce
1340800946 2026-02-27T19:45:38Z Very Polite Person /* History of research and programs */ By [[STS-75]] in 1996<ref name="NASA tether 1999-03-13" /> and [[LightSail|LightSail 1]] and [[LightSail#LightSail 2|LightSail 2]] between 2015 and 2019, modern functional field propulsion systems were active in [[outer space]].<ref name="PS FP 2015-06-09" /><ref name="PS FP 2020 LightSail2" />
1340800750 2026-02-27T19:44:16Z Very Polite Person /* 1980s-1990s */ [[STS-75]] in 1996 deployed and proved the functionality of the [[space tether]] field propulsion concept on the 19th mission of the {{OV|Columbia|full=no}} [[NASA]] [[Space Shuttle]] orbiter.<ref name="NASA tether 1999-03-13" />
1340800402 2026-02-27T19:41:31Z Very Polite Person /* 21st century */ ce
1340796068 2026-02-27T19:09:39Z Very Polite Person /* Electric and electromagnetic with carried propellant */ ce
1340795839 2026-02-27T19:07:56Z Very Polite Person /* Electromagnetic propulsion */ ce
1340795407 2026-02-27T19:04:13Z Very Polite Person /* 1980s-1990s */ ce
1340795296 2026-02-27T19:03:24Z Very Polite Person /* Beamed-energy propulsion */ ce
1340794948 2026-02-27T19:00:03Z Very Polite Person /* Environment-fed electric propulsion */ ce
1340794815 2026-02-27T18:58:41Z Very Polite Person /* Field-interaction in atmosphere or dense media */ ce
1340794712 2026-02-27T18:57:38Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1340794601 2026-02-27T18:56:54Z Very Polite Person /* 21st century */ ce
1340794530 2026-02-27T18:56:20Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1340794407 2026-02-27T18:55:09Z Very Polite Person /* Environment-coupled momentum exchange */ ce
1340794323 2026-02-27T18:54:20Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1340791257 2026-02-27T18:31:54Z Very Polite Person /* History of research and programs */ ce
1340789933 2026-02-27T18:21:45Z Very Polite Person /* History of research and programs */ ce
1340789679 2026-02-27T18:19:37Z Very Polite Person /* Background */ ce
1340788932 2026-02-27T18:13:37Z Very Polite Person /* Early 20th century to the 1960s */ In his 1918-1919 manuscript ''"To whomsoever will read in order to build"'', [[Yuri Kondratyuk]] discussed electric propulsion in the context of cathode rays and described thrust from electrically discharging and repelling material particles, alongside a schematic that Choueiri noted may be the "first conceptualization of a [[colloid thruster]]".<ref name="Choueiri FP 2004" />{{rp|10}}
1340787903 2026-02-27T18:05:11Z Very Polite Person /* Early 20th century to the 1960s */ split
1340787875 2026-02-27T18:04:52Z Very Polite Person /* Early 20th century to the 1960s */ In 1947 at [[Fort Bliss]], [[Wernher von Braun]] encouraged [[Ernst Stuhlinger]] to investigate his spacecraft propulsion ideas, telling Stuhlinger, "I wouldn't be a bit surprised if one day we flew to to Mars electrically!"<ref name="Choueiri FP 2004" />{{rp|13}}
1340787344 2026-02-27T18:00:35Z Very Polite Person /* Early 20th century to the 1960s */ The first clear postwar reappearance of these propulsion concepts in open scientific literature was in December 1945, in the ''[[Journal of the American Rocket Society]]'', where the term "[[ion rocket]]" was first coined by Herbert Radd.<ref name="Choueiri FP 2004" />{{rp|12}}
1340786920 2026-02-27T17:56:44Z Very Polite Person /* Early 20th century to the 1960s */ After the 1930s, related field propulsion research concepts reached a lull in public published activity for over a decade through and after [[World War II]], appearing mainly in science fiction rather than in sustained technical development.<ref name="Choueiri FP 2004" />{{rp|12}}
1340786502 2026-02-27T17:52:58Z Very Polite Person /* Early 20th century to the 1960s */ [[Hermann Oberth]]'s 1929 book ''[[Wege zur Raumschiffahrt]]'' was cited by Choueiri as having "defined, for the first time publicly and unambiguously", that related propulsion concepts were "a serious and worthy pursuit in astronautics".<ref name="Choueiri FP 2004" />{{rp|11}}
1340786035 2026-02-27T17:48:58Z Very Polite Person /* 21st century */ The [[NASA Institute for Advanced Concepts]] (NIAC) program published further field propulsion research in 2011.<ref name="Gilland NIAC Plasma 2011" />{{rp|1,25-26}}
1340785726 2026-02-27T17:46:24Z Very Polite Person /* 1980s-1990s */ ce
1340785540 2026-02-27T17:44:44Z Very Polite Person /* References */ author-link=[[Robert L. Forward]]
1340785424 2026-02-27T17:43:37Z Very Polite Person /* Beamed-energy propulsion */ ce
1340785337 2026-02-27T17:42:53Z Very Polite Person /* Definitions */ Across all of these efforts, technical and scientific reviews acknowledged the conceptual appeal of field propulsion but also stressed the unresolved consistency issues that arise when no clear external momentum channel can be identified.<ref name="Millis BPPP NASA 1998" />{{rp|2}}
1340785291 2026-02-27T17:42:35Z Very Polite Person /* 21st century */ In 2010, the [[Japan Aerospace Exploration Agency]]'s (JAXA) [[IKAROS]] mission demonstrated propulsion by harnessing [[radiation pressure]] from sunlight.<ref name="JAXA IKAROS 2010" /><ref name="Johnson et al NASA 2013" />{{rp|3}}
1340785017 2026-02-27T17:40:05Z Very Polite Person /* Definitions */ ce
1340784422 2026-02-27T17:35:22Z Very Polite Person /* 1980s-1990s */ ce
1340784331 2026-02-27T17:34:38Z Very Polite Person /* 1980s-1990s */ this also goes up here
1340784081 2026-02-27T17:32:26Z Very Polite Person /* 1980s-1990s */ this belongs up here
1340783857 2026-02-27T17:30:42Z Very Polite Person /* 21st century */ [[British Aerospace]] was confirmed in 2001 to have initiated a research program called "Project Greenglow" to research "the possibility of the control of gravitational fields."<ref name="BBC Greenglow 2016-03-23" /><ref name="Observer FP 2001-01-07" />{{rp|13}}
1340782983 2026-02-27T17:24:10Z Very Polite Person /* 1960s-1970s */ ce
1340782890 2026-02-27T17:23:32Z Very Polite Person /* Early 20th century to the 1960s */ According to Choueiri, early thinking and experimentation in related propulsion research focused mainly on electrostatic concepts, but that the first laboratory electric thruster was electrothermal and the first electric thruster to fly in space was a mostly electromagnetic pulsed plasma device.<ref name="Choueiri FP 2004" />{{rp|8}}
1340782657 2026-02-27T17:21:45Z Very Polite Person /* References */ ce
1340782427 2026-02-27T17:20:00Z Very Polite Person /* Early 20th century to the 1960s */ [[Edgar Choueiri]]
1340782157 2026-02-27T17:18:06Z Very Polite Person /* Early 20th century to the 1960s */ Edgar Choueiri, writing in ''[[Journal of Propulsion and Power]]'', described a 1917 patent application by [[Robert H. Goddard]], granted in 1920, as "the world’s first documented electrostatic ion accelerator intended for propulsion."<ref name="Choueiri FP 2004" />{{rp|8}}
1340781722 2026-02-27T17:14:18Z Very Polite Person /* References */ [[Journal of Propulsion and Power]]
1340781333 2026-02-27T17:10:58Z Very Polite Person /* 1980s-1990s */ ce
1340781213 2026-02-27T17:10:05Z Very Polite Person /* History of research and programs */ ce
1340781100 2026-02-27T17:09:23Z Very Polite Person /* History of research and programs */ change decade splits
1340780826 2026-02-27T17:07:12Z Very Polite Person /* 1960s-1980s */ split
1340780690 2026-02-27T17:06:08Z Very Polite Person /* 1960s-1980s */ November 30
1340780610 2026-02-27T17:05:31Z Very Polite Person /* 1960s-1980s */ to here
1340780549 2026-02-27T17:05:04Z Very Polite Person /* Electromagnetic propulsion */ cut to move
1340779183 2026-02-27T16:55:09Z Very Polite Person /* 1960s-1980s */ It reported that the mission's mercury electron bombardment ion engine "ran for 31 minutes becoming the first electric engine ever to operate in space."<ref name="Camilleri EP 2017" />{{rp|4}}
1340778945 2026-02-27T16:53:11Z Very Polite Person /* 1960s-1980s */ A 2017 [[University of Colorado]] paper from the [[Ann and H.J. Smead Department of Aerospace Engineering Sciences]] described SERT I as "not only the first electric satellite it was also the first spacecraft to incorporate any kind of electric propulsion."<ref name="Camilleri EP 2017" />{{rp|1,4}}
1340777859 2026-02-27T16:44:54Z Very Polite Person /* 1960s-1980s */ [[SERT-1|Space Electric Rocket Test]] (SERT I)
1340629294 2026-02-26T19:44:35Z Very Polite Person /* 1960s-1980s */ NASA reported that on July 20, 1964, two electrostatic ion engines were tested in space in the Space Electric Rocket Test (SERT I), and that the mercury electron-bombardment engine produced thrust in flight.<ref name="NASA Lewis FP 1966" />{{rp|13}}
1340629080 2026-02-26T19:43:00Z Very Polite Person /* Electromagnetic propulsion */ A 1966 NASA [[Lewis Research Center]] overview stated that electric-propulsion spacecraft then under study could not be expected to take off from Earth and therefore would need to be launched to Earth orbit by chemical rockets before beginning low-thrust operation.<ref name="NASA Lewis FP 1966" />{{rp|6}}
1340627981 2026-02-26T19:35:22Z Very Polite Person /* Types */ ce
1340627610 2026-02-26T19:32:42Z Very Polite Person /* Types */ ce
1340621552 2026-02-26T18:46:52Z Very Polite Person /* Types */ ce
1340620981 2026-02-26T18:42:06Z Very Polite Person /* Development and testing */ ce
1340620924 2026-02-26T18:41:38Z Very Polite Person /* Development and testing */ ce
1340620776 2026-02-26T18:40:36Z Very Polite Person /* Demonstrated */ ce
1340620686 2026-02-26T18:39:50Z Very Polite Person /* Types */ ce
1340619175 2026-02-26T18:28:48Z Very Polite Person /* Types */ ce
1340618988 2026-02-26T18:27:17Z Very Polite Person /* Types */ oops, fix.
1340618874 2026-02-26T18:26:23Z Very Polite Person /* Types */ ce
1340618481 2026-02-26T18:23:49Z Very Polite Person /* Proposed and theorized */ These concepts are discussed in aerospace literature primarily as theoretical or exploratory frameworks rather than operational propulsion technologies.
1340618427 2026-02-26T18:23:23Z Very Polite Person /* Development and testing */ These categories describe propulsion concepts reported as under engineering investigation that extend demonstrated field propulsion concepts and technologies.
1340618319 2026-02-26T18:22:32Z Very Polite Person /* Demonstrated */ This section covers propulsion approaches with experimental validation, flight heritage, or sustained engineering development, regardless of whether they carry propellant.
1340617974 2026-02-26T18:19:56Z Very Polite Person /* Types */ These distinctions underpin how the literature groups field propulsion concepts, separating internally accelerated propellant systems from approaches that exchange momentum with external fields or media.
1340617274 2026-02-26T18:14:37Z Very Polite Person /* Types */ ce
1340617245 2026-02-26T18:14:27Z Very Polite Person /* Types */ Accordingly, published surveys tend to treat field propulsion as a layered taxonomy rather than a single technology, spanning demonstrated engineering systems, environment-coupled momentum exchange, and theoretical physics proposals.
1340617089 2026-02-26T18:13:21Z Very Polite Person Undid revision [[Special:Diff/1340616967|1340616967]] by [[Special:Contributions/Very Polite Person|Very Polite Person]] ([[User talk:Very Polite Person|talk]])
1340616967 2026-02-26T18:12:27Z Very Polite Person /* Theoretical proposals */ These distinctions underpin how the literature groups field propulsion concepts, separating internally accelerated propellant systems from those that exchange momentum with external fields or media.
1340616890 2026-02-26T18:12:00Z Very Polite Person /* 21st century */ Subsequent work largely extended this research, examining whether identifiable environmental interactions could meet the same conservation law and measurement criteria.
1340616778 2026-02-26T18:11:17Z Very Polite Person /* 1990s */ BPP reframed field propulsion from a catalog of ideas into a research program defined by falsifiable physical requirements.
1340616641 2026-02-26T18:10:28Z Very Polite Person /* 1960s-1980s */ By the 1980s, earlier classification frameworks began giving way to attempts to identify and organize specific physical coupling mechanisms capable of producing measurable thrust.
1340616481 2026-02-26T18:09:13Z Very Polite Person /* 1960s-1980s */ This period marked a transition from organizing concepts by propulsion category toward attempts to identify specific physical coupling mechanisms capable of producing measurable thrust.
1340616428 2026-02-26T18:08:40Z Very Polite Person /* History of research and programs */ Field propulsion developed as a parallel conceptual track alongside conventional rocketry, moving between speculative physics, engineering classification frameworks, and periodic experimental demonstrations.
1340611323 2026-02-26T17:32:59Z Very Polite Person /* History of research and programs */ ce
1340609958 2026-02-26T17:23:54Z Very Polite Person /* 1990s */ ce
1340609753 2026-02-26T17:22:34Z Very Polite Person /* 21st century */ ce
1340609556 2026-02-26T17:21:15Z Very Polite Person /* 1960s-1980s */ ce
1340609370 2026-02-26T17:19:53Z Very Polite Person /* 1990s */ ce new version
1340609142 2026-02-26T17:18:12Z Very Polite Person /* 1960s-1980s */ ce
1340609041 2026-02-26T17:17:20Z Very Polite Person /* History of research and programs */ folder 80s into this period
1340608906 2026-02-26T17:16:11Z Very Polite Person /* History of research and programs */ ce and consider chronology subsections
1340608211 2026-02-26T17:11:31Z Very Polite Person /* History of research and programs */ ce
1340608147 2026-02-26T17:11:04Z Very Polite Person /* History of research and programs */ split
1340607749 2026-02-26T17:08:56Z Very Polite Person /* Definitions */ fix efn
1340607175 2026-02-26T17:05:17Z Very Polite Person ce; liberate some things from Definitions that honestly probably are better under history et al
1340605551 2026-02-26T16:55:27Z Very Polite Person /* Definitions */ rename ===sub sections===
1340603700 2026-02-26T16:42:59Z Very Polite Person /* Definitions */ ce to: Some speculative field propulsion concepts may require extensions to established physical theories, including [[Physics beyond the Standard Model|beyond the Standard Model]] of [[particle physics]] and [[cosmology]].<ref name="Dröscher Hauser" />{{rp|9}}
1340581151 2026-02-26T13:41:54Z Very Polite Person ce
1340580634 2026-02-26T13:38:18Z Very Polite Person /* Background */ to here
1340580535 2026-02-26T13:37:30Z Very Polite Person /* Definitions */ cut to move
1340580438 2026-02-26T13:36:45Z Very Polite Person /* Background */ simplify
1340579972 2026-02-26T13:32:58Z Very Polite Person /* Field propulsion based on physical structure of space */ proposed
1340579775 2026-02-26T13:32:01Z Very Polite Person /* Field propulsion based on physical structure of space */ ce, cut paragraph that's really about one study, interesting though it is
1340579032 2026-02-26T13:27:26Z Very Polite Person /* Definition */ plural
1340578961 2026-02-26T13:26:40Z Very Polite Person ce, start next section rejigger, [[specific impulse]]
1340512232 2026-02-26T03:27:42Z Very Polite Person /* History of research and programs */ [[Albert Einstein]]
1340511921 2026-02-26T03:25:25Z Very Polite Person /* History of research and programs */ The device was likely the first electric thruster to ever be studied on a thruster stand, and was the first electrothermal thruster ever built.<ref name="Choueiri FP 2004" />{{rp|11-12}}
1340511792 2026-02-26T03:24:36Z Very Polite Person /* History of research and programs */ [[Valentin Glushko]] joined the [[Gas Dynamics Laboratory]] in [[Leningrad]] in 1929, and by 1933 with staff developed an early [[Spacecraft electric propulsion|electric thruster]] prototype, an [[Microwave electrothermal thruster|electrothermal]] approach intended for spacecraft propulsion.<ref name="Choueiri FP 2004" />{{rp|11}}
1340454704 2026-02-25T20:47:18Z Very Polite Person /* History of research and programs */ [[Konstantin Tsiolkovsky]] writing in 1911 included an early published statement of the basic electric-propulsion idea: using electricity to increase the velocity of ejected particles. Tsiolkovsky wrote:<ref name="Choueiri FP 2004" />{{rp|4}}
1340133987 2026-02-24T03:13:27Z Very Polite Person /* Physics-frontier research */ split
1340133730 2026-02-24T03:11:42Z Very Polite Person /* Beamed-energy and externally powered thrust */ paste
1340133593 2026-02-24T03:10:40Z Very Polite Person /* Beamed-energy and field-interactive */ cut
1340133453 2026-02-24T03:09:33Z Very Polite Person /* Definition */ split
1340133400 2026-02-24T03:09:13Z Very Polite Person /* Definition */ split
1340133366 2026-02-24T03:09:00Z Very Polite Person try a structural change
1340131010 2026-02-24T02:54:38Z Very Polite Person /* Beamed-energy and field-interactive */ ce
1340130729 2026-02-24T02:53:05Z Very Polite Person /* Physics-frontier research */ A 2009 propulsion survey framed one motivation for field propulsion research in operational terms, arguing that if field interactions could reduce effective gravitational and inertial resistance, rocket thrust and propellant requirements for Earth-to-orbit flight would be substantially reduced.<ref name="Czysz Bruno FP 2009" />{{rp|437}}
1340055852 2026-02-23T18:36:34Z Very Polite Person /* Beamed-energy and externally powered thrust */ ce
1340055561 2026-02-23T18:34:38Z Very Polite Person /* Beamed-energy and externally powered thrust */ ce
1340054900 2026-02-23T18:29:56Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1340051312 2026-02-23T18:05:36Z Very Polite Person /* References */ + <ref name="Czysz Bruno FP 2009">
1340044645 2026-02-23T17:19:11Z Very Polite Person /* Production */ better term: Demonstrated
1340044483 2026-02-23T17:18:12Z Very Polite Person /* Been to space */ ce title
1340039841 2026-02-23T16:47:49Z Very Polite Person /* Types */ ce
1340039535 2026-02-23T16:45:25Z Very Polite Person /* Types */ ce
1340038480 2026-02-23T16:36:49Z Very Polite Person /* Types */ try different arrangement
1339953089 2026-02-23T03:49:39Z OAbot [[Wikipedia:OABOT|Open access bot]]: url-access=subscription updated in citation with #oabot.
1339704092 2026-02-21T23:11:30Z Skarz Rescuing 3 sources and tagging 0 as dead.) #IABot (v2.0.9.5
1339588268 2026-02-21T08:20:17Z Very Polite Person /* Definition */ Traditional [[Rocket|rocketry]] has dominated [[Spacecraft propulsion|aerospace propulsion]] in the 20th and early 21st centuries.<ref name="NASA History of Rockets" />
1339567461 2026-02-21T05:13:06Z Very Polite Person /* Definition */ to here
1339567327 2026-02-21T05:12:05Z Very Polite Person /* History of research and programs */ cut to move
1339544071 2026-02-21T02:27:45Z Very Polite Person dislike that change, rv
1339543828 2026-02-21T02:25:53Z Very Polite Person /* See also */ trying a change
1339541805 2026-02-21T02:09:12Z Very Polite Person /* Physics-frontier research */ Minami's navigation theory framing was situated within broader [[Extra dimensions|extra-dimensional]] theory discussions, including [[Kaluza-Klein theory]], [[supergravity|supergravity theory]], [[superstring theory]], [[M theory]], and [[D-brane]]-related superstring theory, as part of the paper's conceptual background for interstellar navigation.<ref name="Minami FP Practical 2005" />{{rp|1420}}
1339541132 2026-02-21T02:05:02Z Very Polite Person delink, will be moving up
1339538388 2026-02-21T01:46:34Z Very Polite Person /* Scope, terminology, and programmatic efforts */ Practical interstellar exploration was framed as a combined problem of propulsion theory and navigation theory, rather than as a propulsion-only problem.<ref name="Minami FP Practical 2005" />{{rp|1419; 1420}}
1339538098 2026-02-21T01:44:40Z Very Polite Person /* Physics-frontier research */ Field propulsion alone was described as insufficient for practical interstellar exploration because no propulsion theory currently exceeds the speed of light, requiring a navigation theory as a secondary solution alongside propulsion theory.<ref name="Minami FP Practical 2005" />{{rp|1419}}
1339535157 2026-02-21T01:26:28Z Very Polite Person /* References */ update ref name, date, archive url
1339534003 2026-02-21T01:19:49Z Very Polite Person /* References */ + Minami, Yoshinari (2005). "A Perspective of Practical Interstellar Exploration: Using Field Propulsion and Hyper-Space Navigation Theory"
1339482974 2026-02-20T20:19:07Z Very Polite Person /* History of research and programs */ ce
1339471497 2026-02-20T19:00:14Z Very Polite Person /* Definition */ Yoshinari Minami of the [[Advanced Space Propulsion Investigation Committee]] argued in 2003 that a potential propulsion "breakthrough" could rely on field propulsion, defined as employing "a physical means to asymmetrically interact with the space vacuum."<ref name="Minami FP JBIS 2003" />{{rp|350}}
1339471254 2026-02-20T18:58:32Z Very Polite Person As one candidate concept, Minami treated space as "an elastic body like rubber" and argued that space curvature could create an "acceleration field," stating that "a space drive is produced in the region of curved space."<ref name="Mi As one candidate concept, Minami treated space as “an elastic body like rubber” and argued that space curvature could create an “acceleration field,” stating that “a space drive is produced in the region of curved space.”<ref name="Minami FP JBIS 2003" />{{rp|352}}
1339471023 2026-02-20T18:57:00Z Very Polite Person /* Definition */ Conservation laws can be satisfied in field propulsion via interaction with "a mass, a massive body, electromagnetic radiation, and space as a vacuum," as Minami described, adding that the "most promising interpretation" is treating vacuum as "a kind of reaction mass."<ref name="Minami FP JBIS 2003" />{{rp|351}}
1339456380 2026-02-20T17:35:42Z Very Polite Person /* Definition */ [[Scientific law|physical law]]
1339456205 2026-02-20T17:34:41Z Very Polite Person /* Definition */ Millis ultimately summarized the matter as: "For field propulsion, the fields themselves must act as the reaction mass."<ref name="Millis Coupling Gravity EM Spacetime 1995" />{{rp|95}}
1339456096 2026-02-20T17:34:05Z Very Polite Person /* Definition */ Marc Millis of [[NASA]]'s [[Breakthrough Propulsion Physics Project]] (BPP) framed the related "space coupling propulsion" problem as requiring a tangible reaction-mass-like property of the vacuum and a controllable coupling mechanism that yields net external thrust.<ref name="Millis Coupling Gravity EM Spacetime 1995" />{{rp|93,94-95,95}}
1339455190 2026-02-20T17:28:45Z Very Polite Person /* History of research and programs */ ce
1339455015 2026-02-20T17:27:47Z Very Polite Person /* History of research and programs */ ce
1339453295 2026-02-20T17:18:02Z Very Polite Person /* History of research and programs */ ce
1339452968 2026-02-20T17:15:58Z Very Polite Person /* History of research and programs */ ce
1339452425 2026-02-20T17:12:42Z Very Polite Person /* History of research and programs */ ce
1339446929 2026-02-20T16:38:23Z Very Polite Person /* History of research and programs */ Holt argued that progress toward field-dependent propulsion required a "field physics laboratory" to quantify relationships among gravitation, electromagnetism, and spacetime structure, to advance aerospace performance beyond then-leading systems like the [[Space Shuttle]], [[SR-71A]], and [[F-16]].<ref name="Holt FP 1980 NTRS" />
1339446780 2026-02-20T16:37:18Z Very Polite Person /* History of research and programs */ Proposed models for field propulsion interactions in this era ranged from Einstein's [[United field theory|unified-field]] efforts to work by "serious 'amateurs'," reflecting how wide the speculative literature around such ideas had become by that period.<ref name="Holt FP 1980 NTRS" />
1339419609 2026-02-20T12:42:18Z Headbomb CE
1339346733 2026-02-20T01:47:47Z Very Polite Person /* References */ I thought I had updated the broken archive link for [[Leik Myrabo]] but I guess not, fixed now
1339194764 2026-02-19T11:37:11Z GreenC bot Reformat 1 URL ([[en:User:GreenC/WaybackMedic_2.5|Wayback Medic 2.5]]). Notice: [[Wikipedia:Requests_for_comment/Archive.is_RFC_5|RFC Eliminate or Deprecate Archive.today from Wikipedia]]
1339056449 2026-02-18T19:23:13Z Very Polite Person and > or
1338870420 2026-02-17T18:54:19Z Very Polite Person /* History of research and programs */ In 1928, J. Navascués of [[León, Spain]] described a field coupled [[dynamo]]-electric machine concept "producing translatory motion of machine by current reaction with earth's field", in which "Propulsion is caused by cutting with a closed conducting turn the earth's [[magnetic flux]]".<ref name="Navascués FP 1928" />{{rp|7231}}
1338867505 2026-02-17T18:33:16Z Very Polite Person /* Environment-coupled, propellantless momentum exchange */ [[Magnetic sail|Magnetospheric plasma propulsion]] (M2P2) is a NIAC proposal by [[Robert Winglee]], in which plasma injection inflates a magnetic bubble that couples with the solar wind. It is considered a variant of magnetic sails.<ref name="Winglee M2P2 NASA" /><ref name="Wired M2P2 1999-08-18" />
1338865811 2026-02-17T18:21:13Z Very Polite Person /* Physics-frontier research */ <ref name="BBC Greenglow 2016-03-23" />
1338864868 2026-02-17T18:14:46Z Very Polite Person /* Field propulsion based on physical structure of space */ fmt
1338864171 2026-02-17T18:09:23Z Very Polite Person /* History of research and programs */ <ref name="PS FP 2020 LightSail2" />
1338857071 2026-02-17T17:19:33Z Very Polite Person /* History of research and programs */ <ref name="PS FP 2015-06-09" />
1338856149 2026-02-17T17:13:07Z Very Polite Person /* History of research and programs */ <ref name="NASA tether 1999-03-13" />
1338853860 2026-02-17T16:56:13Z Very Polite Person /* History of research and programs */ In 1958, [[The Franklin Institute]]'s astronautics lecture series, published as a Journal of the Franklin Institute monograph, included a section explicitly titled 'Field Propulsion,' describing propulsion 'by the use of fields' as a way to avoid an [[Jet engine|exhaust jet]],<ref name="Franklin FP 1957" />
1338779593 2026-02-17T04:47:09Z Very Polite Person /* History of research and programs */ order
1338779102 2026-02-17T04:41:54Z Very Polite Person /* History of research and programs */ links + ce
1338760256 2026-02-17T01:51:02Z Very Polite Person /* References */ +quote
1338759651 2026-02-17T01:45:52Z Very Polite Person /* Field propulsion based on physical structure of space */ [[macroscopic]], [[Magnetic reconnection|line merging]], [[megagauss]]
1338759338 2026-02-17T01:43:26Z Very Polite Person /* History of research and programs */ ce
1338759243 2026-02-17T01:42:53Z Very Polite Person /* History of research and programs */ [[science fiction]]
1338759128 2026-02-17T01:42:01Z Very Polite Person /* History of research and programs */ as prior 1960s research had
1338757667 2026-02-17T01:30:45Z Very Polite Person /* History of research and programs */ [[Institute of Development Studies]]
1338712915 2026-02-16T20:17:02Z Very Polite Person /* History of research and programs */ The [[British National Space Centre]] and [[Society of British Aerospace Companies]] began organizing an annual field propulsion research conference in 2001, inaugurated in [[Brighton]] with initial delegates including [[Harry Kroto]].<ref name="FP Conference page 2001" /><ref name="Observer FP 2001-01-07" />{{rp|13}}
1338711969 2026-02-16T20:10:17Z Very Polite Person /* History of research and programs */ The [[British National Space Centre]] began organizing an annual field propulsion research conference in 2001, inaugurated in [[Brighton]] with initial delegates including [[Harry Kroto]].<ref name="Observer FP 2001-01-07" />{{rp|13}}
1338711573 2026-02-16T20:07:16Z Very Polite Person /* Physics-frontier research */ [[British Aerospace]] was confirmed in 2001 to have initiated a research program called "Project Greenglow" to research "the possibility of the control of gravitational fields."<ref name="Observer FP 2001-01-07" />{{rp|13}}
1338710133 2026-02-16T19:56:34Z Very Polite Person /* Field-interaction in atmosphere or dense media */ image
1338709716 2026-02-16T19:53:37Z Very Polite Person /* Field-interaction in atmosphere or dense media */ expand
1338706259 2026-02-16T19:30:26Z Very Polite Person /* Field-interaction in atmosphere or dense media */ expand
1338698631 2026-02-16T18:44:17Z Very Polite Person /* References */ fix ref
1338698451 2026-02-16T18:43:10Z Very Polite Person /* History of research and programs */ In 1980, the ''[[Huntsville Times]]'' reported on a program by [[TRW Inc.]]'s Defense and Space Systems Group researching [[magnetic field]] based field propulsion, called "force field propulsion", for vehicle launch applications.<ref name="Huntsville FP 1980-10-27" />{{rp|4}}
1338692729 2026-02-16T17:58:50Z Very Polite Person /* History of research and programs */ The ''Chicago Tribune'' in 1980 highlighted [[solar electric propulsion]] as a possible field propulsion option under research.<ref name="Chicago Tribune FP 1980-01-29" />
1338390018 2026-02-14T22:15:40Z Very Polite Person /* History of research and programs */ [[United Press International]] reported that in 1964 there was a proposal from the [[Westinghouse Air Brake Company]] to link [[Youngstown, Ohio]] with [[Pittsburgh]] via a "super conductor magnetic field propulsion" [[Transit Expressway Revenue Line|transit system]].<ref name="UPI FP 1964-01-03" />{{rp|9}}
1338388532 2026-02-14T22:04:00Z Very Polite Person +
1338255120 2026-02-14T01:52:36Z Very Polite Person /* History of research and programs */ In 1958, U.S. Air Force general Donald L. Putt predicted that upcoming spacecraft would deploy "photo or ion field-type propulsion".<ref name="FP Globe 1958-05-31" />{{rp|6}}
1338194921 2026-02-13T19:06:49Z Very Polite Person /* Field propulsion based on physical structure of space */ The concept depended on two assumptions: that space-time is a projection of a [[Extra dimensions|higher-dimensional space]] analogous to a [[Holographic principle|hologram]], and that electromagnetic or hydromagnetic fields are related to gravitational fields such that a [[unified field theory]] could be developed. <ref name="Holt NASA 1979" />{{rp|1}}
1338191945 2026-02-13T18:46:15Z Very Polite Person /* Field propulsion based on physical structure of space */ split
1338190990 2026-02-13T18:40:56Z Very Polite Person /* Field propulsion based on physical structure of space */ + <ref name="Holt NASA 1979" />
1338186068 2026-02-13T18:10:25Z Very Polite Person /* Environment-fed electric propulsion */ missing ,
1338185929 2026-02-13T18:09:38Z Very Polite Person /* Environment-coupled, propellantless momentum exchange */ ce
1338185184 2026-02-13T18:04:52Z Very Polite Person /* Environment-coupled, propellantless momentum exchange */ ce
1338185118 2026-02-13T18:04:23Z Very Polite Person /* Ambient-environment coupling */ ce
1338184987 2026-02-13T18:03:31Z Very Polite Person /* Types */ ce
1338184876 2026-02-13T18:02:48Z Very Polite Person /* Definition */ ce
1338179496 2026-02-13T17:29:54Z Very Polite Person /* Environment-coupled, propellantless momentum exchange */ ce
1338179359 2026-02-13T17:28:58Z Very Polite Person /* Environment-coupled, propellantless momentum exchange */ ce
1338179287 2026-02-13T17:28:30Z Very Polite Person /* Environment-coupled, propellantless momentum exchange */ ce
1338179226 2026-02-13T17:28:10Z Very Polite Person /* Scope, terminology, and programmatic efforts */ ce
1338178986 2026-02-13T17:27:06Z Very Polite Person /* Definition */ ce
1338178896 2026-02-13T17:26:30Z Very Polite Person /* Definition */ ce
1338177175 2026-02-13T17:17:02Z Very Polite Person wikilink cleaning
1338175830 2026-02-13T17:09:18Z Very Polite Person /* History of research and programs */ wikilink clean up
1338170552 2026-02-13T16:39:56Z Very Polite Person /* Physics-frontier research */ wikilink cleaning
1338169042 2026-02-13T16:30:10Z Very Polite Person /* Electric and electromagnetic with carried propellant */ wikilink cleaning
1338168705 2026-02-13T16:28:00Z Very Polite Person /* Environment-coupled, propellantless momentum exchange */ wikilink cleaning
1338168020 2026-02-13T16:23:08Z Very Polite Person /* Environment-fed electric propulsion */ wikilink cleaning
1338167765 2026-02-13T16:21:32Z Very Polite Person /* Field-interaction in atmosphere or dense media */ wikilink cleaning
1338167311 2026-02-13T16:18:30Z Very Polite Person /* Field propulsion based on physical structure of space */ cleaning duplicate wikilinks
1338161687 2026-02-13T15:30:58Z Very Polite Person /* Definition */ try to implify efn
1338155514 2026-02-13T14:39:26Z Very Polite Person /* Definition */ ce
1338155326 2026-02-13T14:37:59Z Very Polite Person /* Definition */ remove duplicate or otherwise used wikilinks from efn
1338022456 2026-02-12T19:40:33Z Very Polite Person /* References */ Minami Musha note
1338022333 2026-02-12T19:39:42Z Very Polite Person /* Types */ {{rp|215,218-219}}
1338016806 2026-02-12T19:03:00Z Very Polite Person /* Definition */ RPs for efn
1338015902 2026-02-12T18:56:43Z Very Polite Person /* Definition */ Big sourcing upgrade on sentence: Any propulsion system that purports to generate net thrust in a closed system without external interaction challenges this principle and is considered physically untenable under the [[Standard Model]] of physics, and would require [[physics beyond the Standard Model]] to be viable.
1338013295 2026-02-12T18:36:15Z Very Polite Person /* References */ + add notes section for efns
1337868499 2026-02-11T22:21:46Z Very Polite Person stray tic
1337865690 2026-02-11T22:03:56Z Very Polite Person /* Field-interaction in atmosphere or dense media */ Meng 5333444 to refs
1337862032 2026-02-11T21:44:35Z Very Polite Person /* Field-interaction in atmosphere or dense media */ <ref name="Akagi et al 1994-05-27"> +archive url and RP
1337860956 2026-02-11T21:38:01Z Very Polite Person /* References */ McInnes set
1337860802 2026-02-11T21:36:47Z Very Polite Person {{rp|187,193}} and note for Forward
1337857254 2026-02-11T21:12:38Z Very Polite Person /* References */ +note
1337857075 2026-02-11T21:11:14Z Very Polite Person /* References */ +note
1337853249 2026-02-11T20:41:06Z Very Polite Person /* References */ update Gilland note for editing
1337853083 2026-02-11T20:40:01Z Very Polite Person ce ref, copied from older notes
1337845557 2026-02-11T19:47:51Z Very Polite Person /* Environment-coupled, propellantless momentum exchange */ fix link
1337845486 2026-02-11T19:47:22Z Very Polite Person /* Environment-coupled, propellantless momentum exchange */ ce
1337838063 2026-02-11T18:54:27Z Very Polite Person /* Environment-coupled, propellantless momentum exchange */ ce
1337833637 2026-02-11T18:26:51Z Very Polite Person /* Environment-coupled, propellantless momentum exchange */ ce
1337830543 2026-02-11T18:05:11Z Very Polite Person /* Types */ ce
1337808262 2026-02-11T15:42:17Z Very Polite Person /* Definition */ ce
1337807799 2026-02-11T15:39:08Z Very Polite Person /* Definition */ ce, I've now cut like 4-5 reiterations in various forms of this in a frankly over-correction to fringe hypersensitivity type worries (probably in my own head), so bye
1337710474 2026-02-11T01:25:37Z Very Polite Person /* Definition */ ce
1337710345 2026-02-11T01:24:46Z Very Polite Person /* Definition */ ce
1337667819 2026-02-10T20:19:23Z Very Polite Person /* Definition */ Broad definitions often include [[solar sail]] systems, such as the [[Japan Aerospace Exploration Agency]]'s (JAXA) [[IKAROS]] mission, which demonstrated propulsion by harnessing [[radiation pressure]] from sunlight.<ref name="JAXA IKAROS 2010" /><ref name="Johnson et al NASA 2013" />{{rp|3}}
1337667710 2026-02-10T20:18:38Z Very Polite Person /* References */ +2 <ref name="JAXA IKAROS 2010"> & <ref name="Johnson et al NASA 2013">
1336480094 2026-02-04T01:19:31Z Very Polite Person {{Short description|Propulsion concepts and technologies}} (it's not JUST spacecraft, as explained/demonstrated in article)
1335037844 2026-01-27T00:42:09Z Very Polite Person /* Types */ almost tempted to bulk remove every wikilink after the Definition section to make a clean start of it after all the structural changes from my draft...............
1335034368 2026-01-27T00:17:54Z Very Polite Person /* Definition */ ce
1335033341 2026-01-27T00:10:17Z Very Polite Person [[Mass flow rate]]
1335033215 2026-01-27T00:09:20Z Very Polite Person /* Definition */ [[propellant]] & [[Coupling (physics)|interactions]] & [[Mass flow rate|sustained expulsion]]
1335031285 2026-01-26T23:57:44Z Randy Kryn uppercase per direct link (Standard Model)
1330194843 2025-12-30T00:45:19Z Explicit Removing link(s) [[undefined]] ([[WP:XFDC#4.0.16|XFDcloser]])
1330040992 2025-12-29T04:10:13Z OAbot [[Wikipedia:OABOT|Open access bot]]: arxiv, pmc, url-access=subscription updated in citation with #oabot.
1328473766 2025-12-20T02:42:42Z Very Polite Person /* References */ + <ref name="NASA FP small 2024-03-17">
1328473536 2025-12-20T02:40:32Z Very Polite Person /* Definition */ <ref name="NASA FP small 2024-03-17" />
1328473477 2025-12-20T02:39:58Z Very Polite Person /* Definition */ propellant-less propulsion
1328315911 2025-12-19T03:37:26Z Very Polite Person /* Environment-coupled, propellantless momentum exchange */ split and fix broken link for [[Magnetic sail|Magnetospheric plasma propulsion]]
1328288720 2025-12-19T00:09:33Z Very Polite Person Big edit and import from [[User:Very Polite Person/sandbox]] on version https://en.wikipedia.org/w/index.php?title=User:Very_Polite_Person/sandbox&oldid=1328288436
1327952318 2025-12-17T01:15:35Z Very Polite Person /* Electromagnetic propulsion */ ce +links
1327924809 2025-12-16T22:23:57Z Very Polite Person /* Scope, terminology, and programmatic efforts */ ce
1327922423 2025-12-16T22:08:11Z Very Polite Person + <ref name="NASA History of Rockets"> to refs
1327921194 2025-12-16T21:59:07Z Very Polite Person /* History of research and programs */ ce
1327921042 2025-12-16T21:58:15Z Very Polite Person /* History of research and programs */ ce
1327920406 2025-12-16T21:53:41Z Very Polite Person /* Scope, terminology, and programmatic efforts */ ce {{rp|1,3–4}}
1327919421 2025-12-16T21:47:20Z Very Polite Person /* Scope, terminology, and programmatic efforts */ <ref name="Millis BPPP NASA 1998" />{{rp|1,3-4}}
1327897852 2025-12-16T19:09:16Z Very Polite Person /* References */ update archive for Ho-Kim
1327895042 2025-12-16T18:47:19Z LooksGreatInATurtleNeck There was a Script warning on the page from a cite template, "Category:CS1 maint: date and year", fixed by removing the redundant year= field as date= was already set
1327889775 2025-12-16T18:08:15Z Very Polite Person /* References */ +Myers note 2025-12-16
1327889468 2025-12-16T18:06:14Z Very Polite Person /* Definition */ <ref name="Gilmore Barrett 2015" />{{rp|2}}
1327889118 2025-12-16T18:04:16Z Very Polite Person /* Definition */ <ref name="Gilmore Barrett 2015" />{{rp|2}}
1327889057 2025-12-16T18:03:52Z Very Polite Person /* Practical methods */ {{rp|2}}
1327885639 2025-12-16T17:39:07Z Very Polite Person /* Types */ {{rp|1}}
1327885514 2025-12-16T17:38:00Z Very Polite Person /* Types */ ce
1327885035 2025-12-16T17:34:02Z Very Polite Person /* Electromagnetic propulsion */ ce
1327884852 2025-12-16T17:32:19Z Very Polite Person /* Electromagnetic propulsion */ {{rp|1}}
1327884621 2025-12-16T17:30:42Z Very Polite Person /* Electromagnetic propulsion */ ce
1327884537 2025-12-16T17:30:06Z Very Polite Person /* Electromagnetic propulsion */ ce
1327883813 2025-12-16T17:23:59Z Very Polite Person /* Electromagnetic propulsion */ {{rp|8}}
1327883689 2025-12-16T17:22:48Z Very Polite Person /* Electromagnetic propulsion */ {{rp|8}}
1327882897 2025-12-16T17:15:57Z Very Polite Person /* Electromagnetic propulsion */ ce {{rp|7}}
1327882798 2025-12-16T17:15:09Z Very Polite Person /* Electromagnetic propulsion */ ce order
1327882098 2025-12-16T17:09:22Z Very Polite Person /* Electromagnetic propulsion */ ce, cut
1327880959 2025-12-16T17:00:58Z Very Polite Person /* Electromagnetic propulsion */ MPDs operate through the Lorentz force generated by the interaction of discharge currents with self-induced or externally applied magnetic fields.<ref name="Myers NASA Electromagnetic Propulsion 1993" />{{rp|5}}
1327879773 2025-12-16T16:51:38Z Very Polite Person /* Electromagnetic propulsion */ {{rp|5}}
1327879170 2025-12-16T16:46:34Z Very Polite Person /* Electromagnetic propulsion */ {{rp|1,4}}
1327862379 2025-12-16T14:33:31Z Very Polite Person /* Scope, terminology, and programmatic efforts */ {{rp|1}} + ce
1327861706 2025-12-16T14:27:19Z Very Polite Person /* Electric/magnetic thrusters that still expel propellant */ ce
1327776591 2025-12-16T02:04:37Z Very Polite Person /* Definition */ ce
1327775887 2025-12-16T01:59:23Z Very Polite Person /* Scope, terminology, and programmatic efforts */ ce
1327775855 2025-12-16T01:59:08Z Very Polite Person /* Definition */ ce
1327766127 2025-12-16T00:55:13Z Very Polite Person /* Electromagnetic propulsion */ ce > Developed in the late 1960s, these thrusters initiate an arc discharge across a solid fluorinated polymer bar, ablating a small amount of propellant and accelerating it by the Lorentz body force.<ref name="Myers NASA Electromagnetic Propulsion 1993" />{{rp|2}}
1327760248 2025-12-16T00:49:03Z Very Polite Person /* Electromagnetic propulsion */ ce
1327755609 2025-12-16T00:44:32Z Very Polite Person /* Electromagnetic propulsion */ ce
1327697489 2025-12-15T19:23:47Z Very Polite Person /* Electromagnetic propulsion */ RP
1327697148 2025-12-15T19:21:50Z Very Polite Person /* Ambient-environment coupling */ ce
1327696572 2025-12-15T19:17:35Z Very Polite Person /* History of research and programs */ tentative section merge
1327694977 2025-12-15T19:06:17Z Very Polite Person /* References */ fix date
1327694710 2025-12-15T19:04:31Z Very Polite Person /* Physics-frontier research */ However, attempts to obtain net thrust or a gravity coupling from static electromagnetic configurations (often framed as "electrogravitic" effects) have not produced reproducible anomalous forces in controlled tests.<ref name="Tajmar SciRep 2024 gravity-EM steady fields" />{{rp|2,15}}<ref name="Tajmar AIAA 2004 Biefeld-Brown corona wind" />{{rp|315,318}}
1327692927 2025-12-15T18:55:25Z Very Polite Person /* History of research and programs */ ce actually now and trim section titles
1327692671 2025-12-15T18:53:47Z Very Polite Person /* Physics-frontier framing (Millis 1998; Minami & Musha 2012) */ ce title (all these titles are almost certainly going to change later)
1327692566 2025-12-15T18:53:03Z Very Polite Person /* Physics-frontier framing (Millis 1998; Minami & Musha 2012) */ ce
1327692091 2025-12-15T18:49:53Z Very Polite Person /* References */ + <ref name="Tajmar AIAA 2004 Biefeld-Brown corona wind">
1327690659 2025-12-15T18:41:03Z Very Polite Person /* References */ +<ref name="Tajmar SciRep 2024 gravity-EM steady fields">
1327688901 2025-12-15T18:30:18Z Very Polite Person /* Physics-frontier framing (Millis 1998; Minami & Musha 2012) */ Vacuum-fluctuation phenomena such as the [[Casimir effect]] have been measured in many precision experiments and are reviewed extensively in the mainstream literature.<ref name="Klimchitskaya et al Casimir 2009" />{{rp|1827, 1829–1830}}
1327688199 2025-12-15T18:25:50Z Very Polite Person /* References */ + <ref name="Klimchitskaya et al Casimir 2009">
1327683348 2025-12-15T17:56:28Z Very Polite Person /* Physics-frontier framing (Millis 1998; Minami & Musha 2012) */ ce, {{rp|216, 218–219}}
1327674804 2025-12-15T17:02:57Z Very Polite Person /* References */ +Myrabo note 2025-12-15
1327674653 2025-12-15T17:01:48Z Very Polite Person /* Field-momentum exchange systems */ ce
1327673754 2025-12-15T16:55:27Z Very Polite Person /* Types */ ce
1327162718 2025-12-12T23:45:32Z Very Polite Person /* Types */ ce
1327162434 2025-12-12T23:43:50Z Very Polite Person /* Types */ ce
1327162254 2025-12-12T23:42:37Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ ce, {{rp|I-2}}
1327161781 2025-12-12T23:39:37Z Very Polite Person /* Scope and terminology in sources */ {{rp|26}}
1327161553 2025-12-12T23:38:10Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ ce
1327159875 2025-12-12T23:26:09Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ ce
1327159113 2025-12-12T23:22:03Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ ce, {{rp|I-2}}
1326992614 2025-12-12T01:04:33Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ dislike, change to this, will break up later.
1326991931 2025-12-12T00:59:53Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ ce, RP's, need to likely break up this sentence later (I think this is the right way to multi-rp, but no idea for sure)
1326976618 2025-12-11T23:18:23Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ {{rp|I-1}}
1326975648 2025-12-11T23:12:15Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ ce + {{rp|iii,II-1}}
1326932780 2025-12-11T18:50:10Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ {{rp|I-2}}
1326917109 2025-12-11T17:23:14Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ [[metallic hydrogen]]
1326916977 2025-12-11T17:22:24Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ ce, structure, more duplication built up from the long note collecting/sandboxing
1326916425 2025-12-11T17:19:00Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ ce, {{rp|I-2}}
1326901344 2025-12-11T15:26:01Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ {{rp|I-2,II-1}} & ce, + [[Speed of light|relativistic]] [[charged particle beams]]
1326560916 2025-12-09T17:06:55Z Very Polite Person /* Field-adjacent: beamed-energy propulsion */ and on second thought eject this section
1326560880 2025-12-09T17:06:39Z Very Polite Person /* Field-accelerated mass systems */ move lightcraft image to here
1326556722 2025-12-09T16:35:57Z Very Polite Person /* Field-adjacent: beamed-energy propulsion */ {{rp|III-4}}
1326552573 2025-12-09T16:04:24Z Very Polite Person /* Field-adjacent: beamed-energy propulsion */ [[Photodesorption|photodesorbed]]
1326383254 2025-12-08T17:55:34Z Very Polite Person /* Field-adjacent: beamed-energy propulsion */ {{rp|II-2}}
1326378141 2025-12-08T17:20:29Z Very Polite Person /* Field-adjacent: beamed-energy propulsion */ {{rp|I-2,II-1,II-2}}
1326373984 2025-12-08T16:54:53Z Very Polite Person /* Field-adjacent: beamed-energy propulsion */ {{rp|iii}}
1325946018 2025-12-06T03:24:32Z Very Polite Person /* Electromagnetic propulsion status (Myers, 1993) */ [[Pulsed plasma thrusters]] & [[Magnetoplasmadynamic thruster|Magnetoplasmadynamic thrusters]]
1325945600 2025-12-06T03:20:45Z Very Polite Person /* Electromagnetic propulsion status (Myers, 1993) */ [[Pulsed inductive thrusters]]
1325945415 2025-12-06T03:19:28Z Very Polite Person /* Electromagnetic propulsion status (Myers, 1993) */ ce
1325945080 2025-12-06T03:16:56Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ {{rp|187}}
1325878410 2025-12-05T18:53:40Z Very Polite Person Have to figure out why that one is flagging, when it's an entire different URL, just doi overlap...?
1325878221 2025-12-05T18:51:57Z Very Polite Person /* Definition */ + <ref name="Eissa Unconventional" />{{rp|60}}
1325877403 2025-12-05T18:45:19Z Very Polite Person /* Definition */ + <ref name="Dröscher Hauser" />{{rp|9}}
1325872910 2025-12-05T18:12:59Z Very Polite Person /* Definition */ -likely
1325872869 2025-12-05T18:12:38Z Very Polite Person /* Definition */ fix
1325872841 2025-12-05T18:12:24Z Very Polite Person /* Definition */ ce
1325868804 2025-12-05T17:46:08Z Very Polite Person /* References */ fix
1325868770 2025-12-05T17:45:50Z Very Polite Person /* References */ update ref
1325861646 2025-12-05T16:57:38Z Very Polite Person /* Physics-frontier framing (Millis 1998; Minami & Musha 2012) */ {{rp|218–219}}
1325860841 2025-12-05T16:51:43Z Very Polite Person /* Physics-frontier framing (Millis 1998; Minami & Musha 2012) */ ce
1325856352 2025-12-05T16:18:52Z Very Polite Person /* Field propulsion based on physical structure of space */ {{rp|216-219}}
1325351592 2025-12-02T16:43:06Z Very Polite Person /* Magnetic and magnetospheric sails */ {{main|Magnetic sail}}
1325351544 2025-12-02T16:42:44Z Very Polite Person /* Solar sails */ {{main|Solar sail}}
1325351191 2025-12-02T16:40:00Z Very Polite Person /* References */ ce
1325351010 2025-12-02T16:38:28Z Very Polite Person /* Electrodynamic tethers */ {{main|Electrodynamic tether}}
1325350645 2025-12-02T16:35:57Z Very Polite Person /* Electrodynamic tethers */ ref name
1325350560 2025-12-02T16:35:18Z Very Polite Person /* Electrodynamic tethers */ On second thought, I don't know if we need a breakout on every possible ancillary application of the underlying technology. Electrodynamic tethers can also generate electrical power at the expense of orbital energy.<ref name="CosmoLorenzini 1997" />{{rp|151}}
1325343598 2025-12-02T15:40:48Z Very Polite Person /* Electrodynamic tethers */ <ref name="Cosmo Lorenzini SR 1997" />{{rp|137,146-147}}
1325258125 2025-12-02T01:42:29Z Very Polite Person /* External links */ mothballing entire External Links section presently, will toss on Talk to save it.
1325257249 2025-12-02T01:35:40Z Very Polite Person /* References */ [[NASA Lewis Research Center]] [[Journal of Spacecraft and Rockets]] [[Bentham Science Publishers]]
1325256472 2025-12-02T01:29:30Z Very Polite Person /* References */ [[World Scientific]]
1325231569 2025-12-01T22:45:35Z Very Polite Person /* Electrodynamic tethers */ + <ref name="Cosmo Lorenzini SR 1997"> and RPs
1325185568 2025-12-01T17:16:21Z Very Polite Person /* Electrodynamic tethers */ Electrodynamic tethers exchange momentum with a planetary magnetosphere or ionosphere via Lorentz forces on a long current-carrying conductor, enabling drag or thrust without propellant in suitable environments (e.g., low Earth orbit).<ref name="Gilland NIAC Plasma 2011" />{{rp|1}}<ref name="Cutler Carroll Tethers 1992" />{{rp|136-138}}
1325179130 2025-12-01T16:28:50Z Very Polite Person /* Ambient plasma–wave coupling */ RP's for section
1324480837 2025-11-27T20:58:09Z AnomieBOT [[User:AnomieBOT/docs/TemplateSubster|Substing templates]]: {{Format ISBN}}. See [[User:AnomieBOT/docs/TemplateSubster]] for info.
1324479284 2025-11-27T20:49:16Z Monkbot [[User:Monkbot/task 21: Replace page(s) with article-number|Monkbot/task 21: Replace page(s) with article-number]];
1323859126 2025-11-24T04:03:16Z OAbot [[Wikipedia:OABOT|Open access bot]]: url-access=subscription updated in citation with #oabot.
1323412253 2025-11-21T16:05:55Z Very Polite Person /* References */ Zubrin note
1323412193 2025-11-21T16:05:15Z Very Polite Person /* Magnetic and magnetospheric sails */ ce
1323295327 2025-11-20T22:44:43Z Very Polite Person /* Magnetic and magnetospheric sails */ ce
1323270033 2025-11-20T19:36:26Z Very Polite Person /* Magnetic and magnetospheric sails */ ce
1323262644 2025-11-20T18:39:49Z Very Polite Person /* Magnetic and magnetospheric sails */ ce
1323250345 2025-11-20T16:55:16Z Very Polite Person /* Practical methods */ ce
1323248375 2025-11-20T16:38:36Z Very Polite Person ce
1323248102 2025-11-20T16:36:23Z Very Polite Person /* Types */ ce
1323102910 2025-11-19T18:48:28Z Very Polite Person /* Types */ ce
1323101260 2025-11-19T18:38:30Z Very Polite Person /* Open and closed propulsion systems */ cut, merged into definition
1323101195 2025-11-19T18:38:01Z Very Polite Person /* Definition */ ce and refine Definition section, sequencing, combine the prior split off Open and closed propulsion systems section to here -- this may do with a further trim, on my to-do.
1323098935 2025-11-19T18:21:34Z Very Polite Person /* Magnetic and magnetospheric sails */ ce
1323091119 2025-11-19T17:17:19Z Very Polite Person /* Definition */ {{rp|197}}
1323006135 2025-11-19T02:55:22Z Very Polite Person /* Programmatic efforts */ NIAC
1322936673 2025-11-18T18:19:43Z Very Polite Person /* Practical methods */ ce
1322936188 2025-11-18T18:16:16Z Very Polite Person /* Electric/magnetic thrusters that still expel propellant */ ce
1322932712 2025-11-18T17:53:10Z Very Polite Person /* References */ +2
1322932595 2025-11-18T17:52:19Z Very Polite Person /* Practical methods */ ce
1322929737 2025-11-18T17:32:31Z Very Polite Person /* Practical methods */ [[Ion-propelled aircraft]]
1322926598 2025-11-18T17:15:34Z Very Polite Person /* Types */ ce
1322747009 2025-11-17T22:44:31Z Very Polite Person /* References */ temp comment out unused for now refs
1322741387 2025-11-17T22:07:42Z Very Polite Person this isn't needed as it's a side matter but related, and feels bolted on. the other link is sufficient.
1322740288 2025-11-17T22:00:34Z Very Polite Person /* History of research and programs */ ce
1322737901 2025-11-17T21:46:35Z Very Polite Person /* History of research and programs */ [[LightSail#LightSail 2|LightSail 2]]
1322737800 2025-11-17T21:45:59Z Very Polite Person /* History of research and programs */ By [[STS-75]] in 1996 and [[LightSail|LightSail 1]] and [[LightSail#LightSail 2]] between 2015 and 2019, functional field propulsion systems were active in [[outer space]].
1322737254 2025-11-17T21:42:41Z Very Polite Person /* History of research and programs */ [[Alfvén wave]]
1322736696 2025-11-17T21:39:14Z Very Polite Person /* History of research and programs */ ce
1322736168 2025-11-17T21:36:14Z Very Polite Person /* History of research and programs */ [[NASA Institute for Advanced Concepts]] (NIAC), [[Air Force Research Laboratory|Air Force Rocket Propulsion Laboratory]], [[Jet Propulsion Laboratory]] links
1322735110 2025-11-17T21:30:12Z Very Polite Person /* History of research and programs */ adjusting; I think this is pure [[WP:BLUE]] for the opening section sentence, but it would be easy to source if needed.
1322733159 2025-11-17T21:18:38Z Very Polite Person /* History of research and programs */ rp
1322703438 2025-11-17T18:04:55Z Very Polite Person /* History of research and programs */ rp
1322224681 2025-11-15T01:40:53Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ ce
1322221702 2025-11-15T01:17:27Z Very Polite Person ce
1322221393 2025-11-15T01:14:53Z Very Polite Person ce move
1322200770 2025-11-14T22:49:59Z Very Polite Person /* History of research and programs */ ce
1322156426 2025-11-14T17:02:17Z Very Polite Person /* Definition */ [[Japan Aerospace Exploration Agency]]
1322156207 2025-11-14T17:00:40Z Very Polite Person /* Definition */ ce, redundant/not needed in definition
1322156053 2025-11-14T17:00:08Z Very Polite Person /* History of research and programs */ [[Breakthrough Propulsion Physics Program]]
1322155958 2025-11-14T16:59:40Z Very Polite Person /* History of research and programs */ ce, move wikilinks for next
1321621619 2025-11-11T17:14:06Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ ce
1321620027 2025-11-11T17:05:14Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ ce
1321539174 2025-11-11T03:26:22Z Very Polite Person /* Definition */ ce / sequence
1321536702 2025-11-11T03:04:27Z Very Polite Person /* Ambient plasma–wave coupling */ ce, too much detail
1321455880 2025-11-10T17:15:41Z Very Polite Person /* Definition */ <ref name="Crisara aerospike 2023-06-30" /><ref name="Dvorksky rockets 2014-12-30" />
1321455790 2025-11-10T17:15:08Z Very Polite Person /* References */ +<ref name="Crisara aerospike 2023-06-30"> and <ref name="Dvorksky rockets 2014-12-30">
1321454746 2025-11-10T17:07:44Z Very Polite Person /* Magnetic and magnetospheric sails */ ce
1321454204 2025-11-10T17:03:42Z Very Polite Person /* Electrodynamic tethers */ cut back level of detail
1321453758 2025-11-10T17:00:32Z Very Polite Person /* Practical methods */ ce (content covered already elsewhere, redundant)
1321453185 2025-11-10T16:56:14Z Very Polite Person /* Open and closed propulsion systems */ ce
1321453078 2025-11-10T16:55:24Z Very Polite Person /* Open and closed propulsion systems */ ce
1321451766 2025-11-10T16:45:28Z Very Polite Person /* Definition */ ce
1321450535 2025-11-10T16:36:17Z Very Polite Person /* Definition */ ce
1321119928 2025-11-08T20:48:15Z Anne drew Format [[#See also|See also]] section per [[MOS:ALSO]] ([[User:Anne drew/FormatSeeAlso|FormatSeeAlso]])
1321012255 2025-11-08T02:46:56Z Very Polite Person /* Conservation and performance context */ ce
1321011890 2025-11-08T02:44:35Z Very Polite Person Overdue slight reorg, then will be cutting down on my being verbose and finishing going back through page numbers
1320951265 2025-11-07T18:55:16Z Nyttend /* Definition */ Avoid casual misuse of "myriad"; presumably they're not suggesting that anywhere near 10,000 laws are being violated
1320877749 2025-11-07T08:13:08Z Citation bot Added pmid. | [[:en:WP:UCB|Use this bot]]. [[:en:WP:DBUG|Report bugs]]. | Suggested by Abductive | #UCB_toolbar
1320836171 2025-11-07T02:06:32Z Very Polite Person /* Practical methods */ ce
1320836073 2025-11-07T02:05:49Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ ce
1320835891 2025-11-07T02:04:35Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ ce
1320835440 2025-11-07T02:01:26Z Very Polite Person /* Open versus closed systems */ ce
1320833725 2025-11-07T01:48:29Z Very Polite Person /* Conservation Laws */ ce; the rest of this is not needed for the point of the section and is leftover spillage from prior drafts and original page (see [[User:Very Polite Person/draft/Field propulsion]] et al)
1320829408 2025-11-07T01:12:24Z Sebbog13 Changing [[Wikipedia:Short description|short description]] from "Advanced spacecraft propulsion technologies and concepts" to "Spacecraft concepts and technologies"
1320668805 2025-11-06T02:42:14Z Citation bot Add: bibcode, issue. | [[:en:WP:UCB|Use this bot]]. [[:en:WP:DBUG|Report bugs]]. | Suggested by Jay8g | #UCB_toolbar
1319942558 2025-11-01T21:17:23Z Ravenpuff /* top */ rephrase opening sentence for clarity, and in light of [[WP:REFERS]]
1319410610 2025-10-29T17:17:30Z Very Polite Person /* Solar sails */ ce
1319407779 2025-10-29T16:55:20Z Very Polite Person /* Solar sails */ {{rp|187,193}} and {{rp|193–194}}
1319405356 2025-10-29T16:35:52Z Very Polite Person /* Solar sails */ ce
1319403428 2025-10-29T16:21:20Z Very Polite Person /* Solar sails */ ce
1319401660 2025-10-29T16:07:12Z Very Polite Person /* References */ +<ref name="McInnes PhilTransA 2003">
1319066744 2025-10-27T16:31:34Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1319065500 2025-10-27T16:22:12Z Very Polite Person ce
1319064744 2025-10-27T16:16:40Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1319043595 2025-10-27T13:27:33Z BentSm /* Open versus closed systems */ Corrected "it's" to "its"
1318856222 2025-10-26T12:16:38Z Wham2001 /* References */ Comment out unused LDR
1318620038 2025-10-25T00:20:10Z AnomieBOT Fixing reference errors
1318616947 2025-10-24T23:53:59Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1318616811 2025-10-24T23:52:16Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1318616630 2025-10-24T23:50:24Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1318616435 2025-10-24T23:48:28Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1318616303 2025-10-24T23:47:11Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1318616187 2025-10-24T23:46:10Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1318615805 2025-10-24T23:43:25Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1318615786 2025-10-24T23:43:14Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1318431546 2025-10-23T20:37:03Z Very Polite Person /* Field-accelerated mass systems */ pulling for now, need to go back through a discovered taxonomical mess across multiple PDFs
1315348692 2025-10-06T04:32:02Z OAbot [[Wikipedia:OABOT|Open access bot]]: url-access=subscription updated in citation with #oabot.
1314435562 2025-10-01T12:09:33Z GreenC bot Reformat 1 URL ([[en:User:GreenC/WaybackMedic_2.5|Wayback Medic 2.5]])
1314384860 2025-10-01T03:30:06Z Very Polite Person remove efn
1314384697 2025-10-01T03:28:51Z Very Polite Person /* References */ ce
1314384633 2025-10-01T03:28:16Z Very Polite Person ==Notes== {{notelist}} (testing, may pull)
1314384267 2025-10-01T03:25:16Z Very Polite Person /* Conservation and performance context */ {{rp|1–2, 11–12}}
1314076396 2025-09-29T16:09:54Z Aadirulez8 Filled in 0 bare reference(s) with reFill 2
1314069327 2025-09-29T15:17:58Z Very Polite Person /* Ambient-environment coupling (Gilland & Williams, 2011) */ ce
1314063994 2025-09-29T14:44:01Z Very Polite Person /* Programmatic efforts */ {{rp|1–2}}
1314063700 2025-09-29T14:42:15Z Very Polite Person /* Definition */ ce
1314063465 2025-09-29T14:40:43Z Very Polite Person /* Definition */ {{rp|1–2}}
1314063153 2025-09-29T14:38:40Z Very Polite Person /* Definition */ ce
1313886833 2025-09-28T16:51:25Z Aadirulez8 v2.05 - Autofix / Fix errors for [[WP:WCW|CW project]] (Link equal to linktext)
1313176981 2025-09-24T18:54:39Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1313175244 2025-09-24T18:41:57Z Very Polite Person /* Field propulsion based on physical structure of space */ case
1313175131 2025-09-24T18:41:06Z Very Polite Person /* Field propulsion based on physical structure of space */ ce
1313173440 2025-09-24T18:27:54Z Very Polite Person /* Field-accelerated mass systems */ ce
1313173048 2025-09-24T18:24:45Z Very Polite Person /* Field-accelerated mass systems */ ce
1313172930 2025-09-24T18:23:56Z Very Polite Person /* Field-accelerated mass systems */ ce
1313164043 2025-09-24T17:18:13Z Very Polite Person /* Conservation and performance context */ ce
1313162098 2025-09-24T17:03:45Z Very Polite Person /* History of research and programs */ ce
1313159741 2025-09-24T16:47:21Z Very Polite Person /* Definition */ {{rp|216–217}}
1313151710 2025-09-24T15:47:33Z Very Polite Person /* Open versus closed systems */ {{rp|216–217}}
1313151624 2025-09-24T15:46:55Z Very Polite Person /* References */ move Kim to ref section
1313151570 2025-09-24T15:46:31Z Very Polite Person /* Open versus closed systems */ ce
1313151047 2025-09-24T15:43:11Z Very Polite Person /* Open versus closed systems */ ce
1313150571 2025-09-24T15:39:55Z Very Polite Person /* Open versus closed systems */ {{rp|216-217}}
1313150292 2025-09-24T15:37:46Z Very Polite Person /* Definition */ {{rp|215-216}}
1312979944 2025-09-23T17:18:30Z Very Polite Person /* Definition */ as of 2011
1312975180 2025-09-23T16:43:41Z Very Polite Person /* Open versus closed systems */ These constraints contrast with classical chemical and conventional [[Spacecraft electric propulsion|electric rockets]], whose performance is governed primarily by onboard propellant and its energy, reflecting fundamental [[materials science|engineering]] limits on achievable [[Specific impulse|exhaust velocity]] and [[energy density]].<ref name="Sutton Rockets 2017" />{{rp|39–40}}
1312974340 2025-09-23T16:37:56Z Very Polite Person /* Open versus closed systems */ <ref name="Gilland NIAC Plasma 2011" />{{rp|7–10}}
1312972157 2025-09-23T16:23:20Z Very Polite Person /* Electromagnetic propulsion */ notably > including
1312971900 2025-09-23T16:21:46Z Very Polite Person /* Electromagnetic propulsion */ + <ref name="Nishiyama IEPC 2011" />{{rp|2}}
1312971723 2025-09-23T16:20:53Z Very Polite Person /* References */ + <ref name="Nishiyama IEPC 2011">
1312966641 2025-09-23T15:49:24Z Very Polite Person /* Electromagnetic propulsion */ ECRs using [[electron cyclotron resonance]] with [[Surface-wave-sustained discharge|microwave discharge]] have flown in space, most notably as the μ10 [[ion engine]] system on JAXA's [[Hayabusa]] and [[Hayabusa2]] asteroid missions.<ref name="Kuninaka IEPC 2009" />{{rp|2}}
1312966300 2025-09-23T15:47:10Z Very Polite Person /* Electromagnetic propulsion */ [[Electrodeless plasma thruster|Electron cyclotron resonance (ECR) thrusters]]: ECR thrusters use electron cyclotron resonance to [[ionize]] and accelerate ambient plasma, particularly in [[ionospheric]] or high-altitude environments.
1312965602 2025-09-23T15:42:55Z Very Polite Person /* References */ add <ref name="Kuninaka IEPC 2009">
1312963777 2025-09-23T15:30:55Z Very Polite Person /* Electromagnetic propulsion */ These systems have been deployed and used in space on a number of [[space tether missions]], most notably the [[Space tether missions#TSS-1 mission|TSS-1]], [[Space tether missions#TSS-1R mission|TSS-1R]], and [[Space tether missions#PMG|Plasma Motor Generator]] (PMG) experiments.
1312962417 2025-09-23T15:22:04Z Very Polite Person /* Open versus closed systems */ c/e, split long sentence, source each single use+rps
1312959135 2025-09-23T14:58:55Z Very Polite Person /* Definition */ ce Sutton
1312958883 2025-09-23T14:57:22Z Very Polite Person /* Definition */ <ref name="Sutton Rockets 2017" |page=5-6 />
1312958099 2025-09-23T14:52:31Z Very Polite Person /* References */ ce editing note, still going through backlog
1312780552 2025-09-22T15:39:08Z Very Polite Person /* External links */ +1
1312779822 2025-09-22T15:34:20Z Very Polite Person /* Physics-frontier framing (Millis 1998; Minami & Musha 2012) */ swap [[NASA Institute for Advanced Concepts]] for [[Advanced Propulsion Physics Laboratory]]
1312779210 2025-09-22T15:30:32Z Very Polite Person /* Open versus closed systems */ {{Related|Thermodynamics}}
1312779010 2025-09-22T15:29:33Z Very Polite Person /* Definition */ Concurrently, options related to [[non-rocket spacelaunch]] are also under research.
1312688638 2025-09-22T02:40:07Z Very Polite Person temp hide this image to try layout tweaks
1312688279 2025-09-22T02:37:51Z Very Polite Person /* See also */ + [[Non-rocket spacelaunch]]
1312675460 2025-09-22T00:51:01Z Very Polite Person /* Field propulsion based on physical structure of space */ +image: Representation of [[Earth]] curving surrounding [[spacetime]] in [[general relativity]], illustrating how [[gravitational field]]s are treated as distortions of the underlying [[manifold|spacetime structure]]. Some proposed field propulsion concepts aim to couple with such structural changes.
1312674457 2025-09-22T00:42:44Z Very Polite Person Rendering of the deployment of a [[solar sail]] for the [[Solar sail#Advanced Composite Solar Sail System (ACS3)|Advanced Composite Solar Sail System (ACS3)]], released by [[NASA]] in 2023.
1312674309 2025-09-22T00:41:15Z Very Polite Person {{Spaceflight sidebar}}
1312673755 2025-09-22T00:35:52Z Very Polite Person ce opening sentence: '''Field propulsion''' refers to [[spacecraft propulsion]] proposed and researched [[Theoretical spacecraft propulsion|concepts]] and [[Spacecraft design|production technologies]] in which [[thrust]] is generated by [[Coupling (physics)|coupling]] a vehicle to external [[field (physics)|fields]] or ambient [[interplanetary medium|media]] rather than by expelling onboard [[reaction mass|propellant]].
1312672110 2025-09-22T00:20:48Z Very Polite Person /* Technologies */ ce
1312672072 2025-09-22T00:20:32Z Very Polite Person /* Types */ ce
1312671087 2025-09-22T00:14:28Z Very Polite Person /* Ambient plasma–wave coupling */ [[NASA Goddard Space Flight Center]] schematic of Earth's [[magnetosphere]] showing regions of naturally occurring [[plasma waves]] (including [[Whistler (radio)|chorus]], [[Magnetosonic wave|magnetosonic]], [[Ultra low frequency|ultra-low frequency]] waves, and [[Plasmasphere|plasmaspheric hiss]]). These ambient [[Plasma (physics)#Wave–particle interactions|wave–particle interactions]] are the type of environments that plasma–wave [[spacecraft propulsion]] ...
1312667764 2025-09-21T23:48:40Z Very Polite Person /* Conservation and performance context */ ce
1312667294 2025-09-21T23:44:30Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ [[beam-powered propulsion]]
1312667135 2025-09-21T23:43:06Z Very Polite Person /* Physics-frontier framing (Millis 1998; Minami & Musha 2012) */ ce - Alcubierre metric, related to [[Alcubierre drive|Alcubierre drives]], by [[Harold G. White]], [[NASA]] [[Johnson Space Center]]. It depicts a "warp bubble", of [[Expansion of the universe#Dynamics of cosmic expansion|artificial expansion of spacetime]] behind and [[Scale factor (cosmology)#Detail|contraction in front]] of a theoretical spacecraft, to generate propulsion.
1312665459 2025-09-21T23:29:09Z Very Polite Person /* Physics-frontier framing (Millis 1998; Minami & Musha 2012) */ {{Related|[[Advanced Propulsion Physics Laboratory]]}}
1312665015 2025-09-21T23:24:54Z Very Polite Person /* Physics-frontier framing (Millis 1998; Minami & Musha 2012) */ + File:Alcubierre Metric, Nasa, Sonny White 2011-09-02.png; Alcubierre metric, related to [[Alcubierre drive|Alcubierre drives]], by [[Harold G. White]], [[NASA]] [[Johnson Space Center]].
1312663980 2025-09-21T23:15:34Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ ce
1312663839 2025-09-21T23:14:14Z Very Polite Person /* Types */ to here
1312663782 2025-09-21T23:13:42Z Very Polite Person /* Electromagnetic propulsion status (Myers, 1993) */ to here
1312663729 2025-09-21T23:13:14Z Very Polite Person /* History of research and programs */ to here
1312663695 2025-09-21T23:12:54Z Very Polite Person /* Open versus closed systems */ to here
1312663622 2025-09-21T23:12:12Z Very Polite Person moving images around
1312663589 2025-09-21T23:11:50Z Very Polite Person /* Definition */ [[Rocket engine#Principle of operation]] is probably best for "[[Rocket engine#Principle of operation|explosive flame and smoke]]" unless anyone is more clever
1312662906 2025-09-21T23:05:12Z Very Polite Person /* Definition */ c/e
1312662794 2025-09-21T23:04:03Z Very Polite Person /* Definition */ ce, split up that sentence that I missed was so long.
1312619441 2025-09-21T18:13:51Z Very Polite Person /* See also */ + [[Emerging technologies]]
1312335661 2025-09-20T02:36:31Z Very Polite Person /* Definition */ (a reaction mass, or something to "push off" from)
1312335390 2025-09-20T02:34:26Z Very Polite Person /* Definition */ tighten this sentence, now it works.
1312334908 2025-09-20T02:31:03Z Very Polite Person /* Definition */ ce; few wikilinks
1312319175 2025-09-20T00:16:39Z Very Polite Person /* Conservation and performance context */ ce
1312318587 2025-09-20T00:11:12Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ could > may
1312318492 2025-09-20T00:10:17Z Very Polite Person /* Open versus closed systems */ ce
1312318086 2025-09-20T00:07:02Z Very Polite Person /* Definition */ I do not need outros.
1312314663 2025-09-19T23:36:24Z Very Polite Person /* References */ <!-- hidden note by VPP / double checked Millis usage as of 2025-09-19 -->
1312314190 2025-09-19T23:31:07Z Very Polite Person /* Definition */ this one doesn't need a source; it's the aggregate of the entirety of the piece.
1312314013 2025-09-19T23:29:08Z Very Polite Person /* Conservation and performance context */ {{rp|2}}
1312313850 2025-09-19T23:27:22Z Very Polite Person /* Physics-frontier framing (Millis 1998; Minami & Musha 2012) */ {{rp|1}}
1312313798 2025-09-19T23:26:56Z Very Polite Person /* Conservation and performance context */ {{rp|2}}
1312313672 2025-09-19T23:25:21Z Very Polite Person /* Definition */ {{rp|2}}
1312271135 2025-09-19T18:04:12Z Very Polite Person /* Definition */ c/e
1312270696 2025-09-19T18:00:57Z Very Polite Person /* Definition */ c/e
1312270446 2025-09-19T17:59:08Z Very Polite Person /* Definition */ c/e + context
1312270143 2025-09-19T17:56:55Z Very Polite Person /* Definition */ -extra bracket
1312270091 2025-09-19T17:56:33Z Very Polite Person /* Definition */ c/e + links
1312269358 2025-09-19T17:51:15Z Very Polite Person c/e
1312268915 2025-09-19T17:47:58Z Very Polite Person c/e
1312265076 2025-09-19T17:18:31Z Very Polite Person +wikilinks +ce
1312262597 2025-09-19T16:38:14Z Very Polite Person /* Definition */ correct page numbers
1312262225 2025-09-19T16:35:24Z Very Polite Person /* Definition */ ce
1312261801 2025-09-19T16:32:25Z Very Polite Person /* Definition */ c/e
1312260505 2025-09-19T16:22:57Z Very Polite Person /* Definition */ c/e
1312259416 2025-09-19T16:14:45Z Very Polite Person /* References */ a-z sort ref list; leave note for source reviews I'll be doing for weeks & tracking that; notes can come out later
1312258986 2025-09-19T16:11:50Z Very Polite Person /* Solar sails */ c/e Forward slightly here
1312258657 2025-09-19T16:09:17Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ c/e last Forward here for a smidge more fidelity, overall copyedit to tighten 1+ year of notes will take a bit
1312228216 2025-09-19T12:27:37Z Fabvill Altered url. URLs might have been anonymized. | [[:en:WP:UCB|Use this tool]]. [[:en:WP:DBUG|Report bugs]]. | #UCB_Gadget
1312156607 2025-09-19T00:27:54Z Very Polite Person /* Definition */ +wikilinks. The broad definition of ''field propulsion'' refers to propulsion systems in which thrust arises from interactions with external [[Field (physics)|fields]] or ambient [[Interplanetary medium|media]], rather than from the sustained expulsion of onboard [[Working mass|reaction mass]] or reliance on solid [[Rocket propellant|chemical fuels]].
1312102929 2025-09-18T17:13:04Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ image
1312102811 2025-09-18T17:12:11Z Very Polite Person /* Solar sails */ image
1312102513 2025-09-18T17:09:53Z Very Polite Person /* Technologies */ shift up
1312102457 2025-09-18T17:09:29Z Very Polite Person /* Field-momentum exchange systems */ Alfvén wave
1312102228 2025-09-18T17:07:58Z Very Polite Person move this image
1312101921 2025-09-18T17:05:50Z Very Polite Person /* Considerations */ pulling Considerations section for updated rework; too much of this is just rocketry and it's poorly written/legacy
1312097116 2025-09-18T16:29:53Z Very Polite Person + move over v1 of "Technologies" section from [[User:Very Polite Person/draft/Field propulsion]]
1312093649 2025-09-18T16:07:24Z Very Polite Person /* Definition */ sourcing adjustments, another of many
1312019481 2025-09-18T05:46:07Z Cyfal spelling ([[WP:Typo Team]])
1311994862 2025-09-18T02:24:28Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ He calculated that such a system might push a probe to Alpha Centauri in about four decades, bringing the timescale of an interstellar flyby to within a human lifetime.<ref name="Forward lightsails 1984" />
1311994235 2025-09-18T02:19:42Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ that was a bit much, change... Forward (1984) extended beamed-sail studies to the interstellar scale, suggesting that phased solar-system lasers could impart sustained acceleration to ultralight sails across astronomical distances.<ref name="Forward lightsails 1984" />
1311993807 2025-09-18T02:16:36Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ Forward (1984) extended beamed-sail studies into the interstellar regime, explicitly proposing that kilometer-scale optical elements and solar system–based phased-laser arrays could project sufficient power to accelerate thin-film sails to a significant fraction of light speed over multi-AU baseline distances.<ref name="Forward lightsails 1984" />
1311991565 2025-09-18T02:01:03Z Very Polite Person /* Solar sails */ In Forward's proposal, a two-stage sail system in which a massive ring sail reflects laser light back onto a detached payload sail, enabling the unmanned spacecraft to rendezvous and brake within the Alpha Centauri system.<ref name="Forward lightsails 1984" />
1311989216 2025-09-18T01:41:30Z Very Polite Person /* Definition */ more specific <ref name="Sutton Rockets 2017" |page=5-6 />
1311989009 2025-09-18T01:39:36Z Very Polite Person /* Solar sails */ ce Forward
1311986658 2025-09-18T01:22:17Z Very Polite Person /* Solar sails */ Forward (1984) proposed that a solar-system-based laser and a 1000-km [[Fresnel lens]] could drive a 3.6-km lightsail probe to 0.11c, enabling a flyby of [[Alpha Centauri]] in ~40 years.<ref name="Forward lightsails 1984" />
1311986186 2025-09-18T01:18:32Z Very Polite Person /* References */ ++ <ref name="Forward lightsails 1984">
1311985998 2025-09-18T01:16:55Z Very Polite Person /* Definition */ ce, more precise I think
1311985667 2025-09-18T01:14:09Z Very Polite Person /* References */ update archive, old one seems to be broken now
1311979880 2025-09-18T00:21:42Z Very Polite Person /* Definition */ <ref name="Gilland NIAC Plasma 2011" />
1311978551 2025-09-18T00:10:02Z Very Polite Person /* Definition */ <ref name="Gilland NIAC Plasma 2011" /> fits better here
1311931227 2025-09-17T18:15:27Z AnomieBOT Dating maintenance tags: {{Cn}}
1311928480 2025-09-17T17:55:16Z Very Polite Person /* History of research and programs */ ce, from leftovers in notes
1311928180 2025-09-17T17:53:08Z Very Polite Person /* Types */ drag in more from notes, closer to caught up
1311927429 2025-09-17T17:47:49Z Very Polite Person /* Solar sails */ more from notes
1311927376 2025-09-17T17:47:27Z Very Polite Person /* Magnetic and magnetospheric sails */ more from notes
1311927323 2025-09-17T17:47:03Z Very Polite Person /* Electrodynamic tethers */ more from notes
1311927276 2025-09-17T17:46:44Z Very Polite Person /* Ambient plasma–wave coupling */ more from notes
1311927235 2025-09-17T17:46:25Z Very Polite Person /* Electric/magnetic thrusters that still expel propellant */ more from notes
1311927150 2025-09-17T17:45:53Z Very Polite Person /* Field-adjacent: beamed-energy propulsion */ more from notes
1311927023 2025-09-17T17:45:04Z Very Polite Person /* Conservation and performance context */ more from notes
1311925242 2025-09-17T17:32:39Z Very Polite Person ce
1311925139 2025-09-17T17:32:02Z Very Polite Person ce
1311924350 2025-09-17T17:27:00Z Very Polite Person /* Types */ ce
1311923954 2025-09-17T17:24:20Z Very Polite Person /* Programmatic efforts */ more from notes
1311923827 2025-09-17T17:23:27Z Very Polite Person /* Magnetic and magnetospheric sails */ more from notes
1311923763 2025-09-17T17:22:58Z Very Polite Person /* Solar sails */ more from notes
1311923711 2025-09-17T17:22:35Z Very Polite Person /* Electrodynamic tethers */ +more from notes
1311923607 2025-09-17T17:21:46Z Very Polite Person /* Open versus closed systems */ ++
1311923106 2025-09-17T17:18:21Z Very Polite Person /* Definition */ integrate more from [[User:Very Polite Person/draft/Field propulsion]]
1311922055 2025-09-17T17:10:51Z Very Polite Person /* Physics-frontier framing (Millis 1998; Minami & Musha 2012) */ import from [[User:Very Polite Person/draft/Field propulsion]]
1311921752 2025-09-17T17:08:50Z Very Polite Person /* Electromagnetic propulsion status (Myers, 1993) */ import from [[User:Very Polite Person/draft/Field propulsion]]
1311921438 2025-09-17T17:06:39Z Very Polite Person /* Beamed-energy and field-interactive concepts (Myrabo, 1983) */ import from [[User:Very Polite Person/draft/Field propulsion]]
1311917922 2025-09-17T16:49:18Z Very Polite Person /* See also */ ++
1311917474 2025-09-17T16:46:03Z Very Polite Person +images
1311916181 2025-09-17T16:35:40Z Very Polite Person /* Field propulsion based on physical structure of space */ ce, stupid Word.
1311916120 2025-09-17T16:35:07Z Very Polite Person /* Field propulsion based on physical structure of space */ ++
1311915993 2025-09-17T16:34:05Z Very Polite Person /* Practical methods */ ++
1311915815 2025-09-17T16:32:44Z Very Polite Person /* Conservation Laws */
1311915715 2025-09-17T16:31:42Z Very Polite Person /* Field-adjacent: beamed-energy propulsion */ ++
1311915649 2025-09-17T16:31:07Z Very Polite Person /* Types */ ++
1311915351 2025-09-17T16:28:56Z Very Polite Person /* Practical methods */ +few sections
1311914060 2025-09-17T16:19:25Z Very Polite Person /* Considerations */ {{cn}}
1311913386 2025-09-17T16:13:51Z Very Polite Person /* External links */ categories and templates
1311911528 2025-09-17T16:01:30Z Very Polite Person /* External links */ remove bizarre science fiction category
1311911139 2025-09-17T15:59:11Z Very Polite Person source updates
1311909850 2025-09-17T15:51:40Z Very Polite Person /* Open versus closed systems */ Building on this distinction between open and closed systems, conservation laws frame the boundary conditions for what types of propulsion are physically viable and which remain speculative or untenable.
1311909676 2025-09-17T15:50:36Z Very Polite Person /* Conservation Laws */ section update
1311908768 2025-09-17T15:45:12Z Very Polite Person /* Types */ Field-propulsion concepts are commonly grouped into (1) environment-coupled systems that exchange momentum with external reservoirs such as sails and tethers, (2) electrically driven devices that employ strong fields but still expel propellant, including pulsed plasma, magnetoplasmadynamic, and pulsed-inductive thrusters, and (3) speculative proposals that invoke a structured vacuum or spacetime geometry to achieve thrust without reaction mass.<ref name="Gilland NIAC Plasma 2011" /><
1311908528 2025-09-17T15:44:34Z Very Polite Person /* Practical methods */ A NASA Institute for Advanced Concepts study in 2011 evaluated "ambient plasma wave propulsion," in which spacecraft generate Alfvén waves in surrounding plasma or magnetospheric fields to exchange momentum without expelling onboard propellant. The report noted such systems are technically immature but could enable new classes of exploration missions if developed.<ref name="Gilland NIAC Plasma 2011" />
1311908160 2025-09-17T15:42:27Z Very Polite Person /* History of research and programs */ A 1972 Air Force Rocket Propulsion Laboratory (AFRPL) report and follow-up Jet Propulsion Laboratory studies in 1975 and 1982 grouped advanced propulsion into three classes: Thermal, Field, and Photon. The reports emphasized "infinite specific impulse" systems drawing energy or working fluid from the ambient environment, and suggested that new advances in lasers and superconductors could revitalize discarded concepts such as laser propulsion or ramjets.<ref
1311907163 2025-09-17T15:36:26Z Very Polite Person ce
1311906987 2025-09-17T15:35:17Z Very Polite Person /* Practical methods */ -duplicate header
1311906835 2025-09-17T15:34:12Z Very Polite Person Resolve a {{cn}} from 2014
1311906287 2025-09-17T15:30:33Z Very Polite Person + [[Field propulsion#History of research and programs]] section from [[User:Very Polite Person/draft/Field propulsion]] notes
1311905069 2025-09-17T15:23:30Z Very Polite Person ce
1311903651 2025-09-17T15:14:56Z Very Polite Person add ==Open versus closed systems== section
1311903113 2025-09-17T15:11:03Z Very Polite Person /* Field propulsion based on physical structure of space */ de-bold
1311903053 2025-09-17T15:10:37Z Very Polite Person /* Types */ interim section tweak
1311902908 2025-09-17T15:09:34Z Very Polite Person /* Speculative methods */ dump current model of this
1311902454 2025-09-17T15:06:28Z Very Polite Person /* Practical methods */ + a few quick refs
1311893318 2025-09-17T14:07:38Z UtherSRG /* References */ condense
1311885476 2025-09-17T13:05:42Z Very Polite Person fix references header
1311824276 2025-09-17T03:17:16Z Very Polite Person Fixed {{more citations needed|date=December 2013}} after 12 years. More incoming next few days.
1311824188 2025-09-17T03:16:37Z Very Polite Person Fixed {{more footnotes needed|date=December 2013}} after 12 years.
1311824075 2025-09-17T03:15:46Z Very Polite Person Initial update; round 1.
1311821876 2025-09-17T02:57:26Z Very Polite Person /* References */ temporary comment out while starting some imports
1311821811 2025-09-17T02:56:42Z Very Polite Person /* References */ +sources
1311821043 2025-09-17T02:49:31Z Very Polite Person /* References */ tweak setup for incoming expansion
1302481765 2025-07-25T17:46:58Z Patar knight [[WP:SDLENGTH]]
1296554263 2025-06-20T18:01:53Z Pppery /* See also */ ...
1296540824 2025-06-20T16:08:02Z Liz Removing link(s) to "United States gravity control propulsion research": Removing links to deleted page United States gravity control propulsion research.
1292063241 2025-05-25T00:39:30Z OAbot [[Wikipedia:OABOT|Open access bot]]: url-access updated in citation with #oabot.
1290403270 2025-05-14T16:10:01Z Very Polite Person /* See also */ make format standard, working on a draft of this article/rewrite -- see [[User:Very Polite Person/sandbox]]
1280592261 2025-03-15T12:15:11Z UtherSRG /* See also */ not related
1280124324 2025-03-12T17:11:15Z Primohare
1245794626 2024-09-15T04:13:53Z Very Polite Person /* External links */ just editing this link so it has the pages title instead of a vague number from auto-generation? This article is a mess. Sourcing galore just glancing at Google scholar alone, going back decades.
1245794484 2024-09-15T04:11:53Z Very Polite Person /* Practical methods */ A>a
1245794226 2024-09-15T04:09:30Z Mrfoogles /* Practical methods */
1245794067 2024-09-15T04:07:33Z Very Polite Person /* Practical methods */ case + spacing
1241794728 2024-08-23T05:13:58Z Citation bot Add: bibcode, authors 1-1. Removed parameters. Some additions/deletions were parameter name changes. | [[:en:WP:UCB|Use this bot]]. [[:en:WP:DBUG|Report bugs]]. | Suggested by Whoop whoop pull up | [[Category:Hypothetical technology]] | #UCB_Category 44/65
1234438243 2024-07-14T10:34:21Z Onel5969 more appropriate in see also, not a similar title
1234155442 2024-07-12T21:32:03Z Lighthumormonger /* top */ added disambig link
1218332484 2024-04-11T02:44:45Z InternetArchiveBot Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.9.5
1200965885 2024-01-30T16:50:12Z Very Polite Person "reactionless or propellantless drive" -> link to [[Reactionless drive]]
1200644106 2024-01-29T23:43:32Z Very Polite Person /* Practical methods */ +Lorentz transformation
1200643241 2024-01-29T23:41:04Z Very Polite Person Link gravitational and magnetic fields, and changing this opening as it's been unsourced for sometime. Calling them proposed is sufficient, as that is all they are, similar to any number of other not-yet achieved but suggested or theorized technologies.
1194029135 2024-01-06T21:21:29Z Dmcdysan /*Practical methods*/Added citation for magnetic sail propellantless Magsail design.
1191599429 2023-12-24T14:14:06Z BD2412 clean up spacing around commas and other punctuation fixes, replaced: ,.<ref> → .<ref>
1182119708 2023-10-27T07:20:32Z Citation bot Alter: pages. Add: issue, series, journal, osti, bibcode, pages. Formatted [[WP:ENDASH|dashes]]. | [[:en:WP:UCB|Use this bot]]. [[:en:WP:DBUG|Report bugs]]. | Suggested by Whoop whoop pull up | #UCB_webform 280/1619
1175765603 2023-09-17T08:20:30Z LeoL123
1168951405 2023-08-06T03:29:24Z Panamitsu casimir effect
1168948467 2023-08-06T02:59:12Z Panamitsu add propellantless drive name
1149561787 2023-04-13T00:42:58Z CaptainAngus /* Advantages */ Updates in accordance with [[MOS:GNL]]
1147006325 2023-03-28T08:20:22Z Qev /* Speculative methods */ Removed "quantum fluctuation vector filtering" as original research without citation or apparent existence.
1139820787 2023-02-17T02:10:00Z Prolongedscream cap [if (capitalization is not used for emphasis), vector/space sail/quantum fluctuations (not proper nouns)], or [cannot find any results for this method besides a plagiarized section in a 2022 e-book], lks ["vacuum" (quantum) fluctuations, vector, quantum gravity] + [comma after "however"]
1124902691 2022-12-01T03:27:35Z SpaceHist65 corrected linkrot (citations #1, #3)
1123126773 2022-11-22T00:40:39Z InternetArchiveBot Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.9.2
1084252868 2022-04-23T12:27:00Z Skullcinema cite patent fix
1081175569 2022-04-05T19:14:23Z Kehkou
1081175438 2022-04-05T19:13:20Z Kehkou
1076642678 2022-03-12T05:35:45Z BrownHairedGirl tag with {{[[Template:Bare URL PDF|Bare URL PDF]]}}
1069170295 2022-01-31T23:40:15Z 2001:579:6284:560:93D:5D1A:D9F2:F3BC Under 'Speculative Methods', Added 'Quantum Fluctuation Vector Filtering'. Analogous to a solar sail, but relying upon an electrically-powered, engineered nanomaterial to filter a vector of omni-vector vacuum fluctuations.
1057856588 2021-11-30T02:10:44Z Citation bot Alter: url. URLs might have been anonymized. | [[WP:UCB|Use this bot]]. [[WP:DBUG|Report bugs]]. | Suggested by AManWithNoPlan | #UCB_webform 646/1113
1024266280 2021-05-21T03:16:30Z 2001:1970:5D1C:4E00:1988:1165:D7CD:53AE /* External links */
1015484375 2021-04-01T19:06:18Z Weanlitar Adding [[Wikipedia:Short description|short description]]: "Spacecraft propulsion" ([[Wikipedia:Shortdesc helper|Shortdesc helper]])
1009480867 2021-02-28T20:34:18Z XOR'easter /* Speculative methods */ commented text is just clutter
1009480792 2021-02-28T20:33:46Z XOR'easter /* Speculative methods */ claim about an idea being within the realm of plausibility requires a source
1000274146 2021-01-14T12:35:00Z Yobot FIx REFPUNCT + other minor fixes
955942658 2020-05-10T17:13:50Z Grufo /* Limits */
955868736 2020-05-10T07:41:55Z Grufo /* Limits */ Theoretical limits -> Limits
955868475 2020-05-10T07:38:58Z Grufo /* Theoretical limits */ Created paragraph
955563864 2020-05-08T14:19:05Z Evinshteyn /* Field propulsion based on physical structure of space */ Fixed grammar
953930606 2020-04-29T20:05:28Z Citation bot Alter: url. Add: date. | You can [[WP:UCB|use this bot]] yourself. [[WP:DBUG|Report bugs here]]. | Activated by Amigao | [[Category:Hypothetical technology]] | via #UCB_Category
919841432 2019-10-06T04:21:52Z 2804:14C:5BC0:A6F0:19A6:DB1D:63C1:E4E1 /* Conservation Laws */ Noether
904129872 2019-06-30T05:02:19Z Snori comma
899103806 2019-05-27T22:02:07Z Sj only real examples
899008061 2019-05-27T08:46:26Z Jaxcab /* Practical methods */
899007917 2019-05-27T08:44:42Z Jaxcab /* Practical methods */ Removed unsourced pseudo scientific rubbish
876108153 2018-12-31T05:46:08Z Deacon Vorbis standard TOC
837171204 2018-04-19T04:38:06Z Dawnseeker2000 refine ref details using [[Project:AWB|AWB]]
809310779 2017-11-08T10:17:15Z InternetArchiveBot Rescuing 2 sources and tagging 0 as dead. #IABot (v1.6) ([[User:Balon Greyjoy|Balon Greyjoy]])
798136086 2017-08-31T05:58:11Z KolbertBot Bot: [[Wikipedia:Bots/Requests for approval/KolbertBot|HTTP→HTTPS]]
791922770 2017-07-23T09:17:19Z 77.43.27.64 /* External links */
791922743 2017-07-23T09:16:56Z 77.43.27.64 /* External links */
790702888 2017-07-15T14:42:41Z 82.34.92.18 comma to clarify
789505875 2017-07-07T19:23:24Z Bender the Bot /* External links */HTTP→HTTPS for [[List of NASA websites|NASA Technical Reports Server]], per [[Wikipedia:Bots/Requests for approval/Bender the Bot 8|BRFA 8]] using [[Project:AWB|AWB]]
784572551 2017-06-09T01:09:38Z Magic links bot Replace [[Help:Magic links|magic links]] with templates per [[Special:Permalink/772743896#Future of magic links|local RfC]] and [[:mw:Requests for comment/Future of magic links|MediaWiki RfC]]
770810124 2017-03-17T18:39:57Z Jac16888 rm sig
770549658 2017-03-16T02:46:52Z Astrojed Conservation Laws
758344989 2017-01-04T21:49:04Z AnomieBOT Dating maintenance tags: {{Or}}
758341857 2017-01-04T21:28:21Z Kortoso That should do it.
758341685 2017-01-04T21:27:23Z Kortoso This has nothing to do with gravity assist.
758341482 2017-01-04T21:26:09Z Kortoso Need to see examples in which this has been used as actual space propulsion.
758341293 2017-01-04T21:24:57Z Kortoso /* Practical methods */ Smelling woo...
755969981 2016-12-21T05:48:54Z Jmcgnh Remove uncited entry from /* References */
755969562 2016-12-21T05:44:14Z Jmcgnh /* See also */ columnize, alpha-sort, reduct overlink, and add [[Bussard ramjet]]; + fix link to [[ion propulsion]]
752304520 2016-11-30T15:09:01Z Yobot /* External links */[[WP:CHECKWIKI]] error fixes using [[Project:AWB|AWB]]
748961080 2016-11-11T13:00:07Z 122.174.179.161 /* See also */
747861007 2016-11-04T20:25:43Z 2001:56A:F786:9700:2997:2589:CD39:4BB4 /* Advantages */
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745540751 2016-10-21T18:50:17Z 2001:56A:F786:9700:3049:4B0:9F84:B51D
745540662 2016-10-21T18:49:37Z 2001:56A:F786:9700:3049:4B0:9F84:B51D /* References */
745540435 2016-10-21T18:48:01Z 2001:56A:F786:9700:3049:4B0:9F84:B51D
723394158 2016-06-02T20:03:10Z Kaobear clean up, [[WP:AWB/T|typo(s) fixed]]: a elastic → an elastic (2) using [[Project:AWB|AWB]]
713855242 2016-04-06T05:32:43Z BG19bot v1.38b - [[WP:WCW]] project (Link equal to linktext)
713694251 2016-04-05T12:47:09Z Hdeasy /* Field propulsion based on physical structure of space */
711474597 2016-03-23T02:42:16Z Sbmehta capitalization
707251944 2016-02-27T19:33:33Z Myasuda /* Field propulsion based on physical structure of space */ sp
703988387 2016-02-08T21:24:53Z 107.107.62.31 /* Advantages */Comma needed
703987993 2016-02-08T21:22:23Z 107.107.62.31 /* Speculative methods */Fixed comma fault
700993459 2016-01-21T21:10:56Z 83.202.54.236 /* Practical methods */ just a little typo
696290885 2015-12-22T04:53:10Z 24.42.191.195 /* Speculative methods */Clarified
694430194 2015-12-09T05:33:38Z 2001:56A:F786:9700:9090:4222:5CB4:5C6F /* See also */
679469352 2015-09-04T18:46:07Z 206.75.177.193 /* External links */
665376209 2015-06-03T20:42:45Z Bibcode Bot Adding 0 [[arXiv|arxiv eprint(s)]], 1 [[bibcode|bibcode(s)]] and 0 [[digital object identifier|doi(s)]]. Did it miss something? Report bugs, errors, and suggestions at [[User talk:Bibcode Bot]]
660373684 2015-05-02T05:20:11Z 189.167.67.14 /* Practical methods */
653916261 2015-03-28T17:36:11Z Rjwilmsi /* Field propulsion based on physical structure of space */Journal cites, Added 1 doi to a journal cite using [[Project:AWB|AWB]] (10870)
653192899 2015-03-23T18:45:05Z 14.202.186.226 /* Field propulsion based on physical structure of space */
649900121 2015-03-04T22:06:36Z Tøpholm /* Practical methods */
649899995 2015-03-04T22:05:28Z Tøpholm /* Practical methods */ small cleanup for understandability
649899393 2015-03-04T22:00:54Z Tøpholm /* Types */ Link correction.
648861129 2015-02-25T23:38:16Z Niceguyedc [[:en:WP:CLEANER|WPCleaner]] v1.34 - Repaired 2 links to disambiguation pages - [[WP:DPL|(You can help)]] - [[Interplanetary]], [[Interstellar]]
642409226 2015-01-14T04:59:18Z 71.235.89.16 /* Field propulsion based on physical structure of space */ might as well fix a grammatical error.
642408900 2015-01-14T04:55:34Z 2601:6:5500:67A:6CA2:9CD8:E873:EDD0 /* Speculative methods */ Previous wording implicitly assumes conservation of energy and momentum. I have reworded it to explicitly state that we are assuming conservation (which I feel is more appropriate since the subsection is on speculative methods).
640074728 2014-12-29T10:48:41Z Stamptrader corrected CS1 errors
638658521 2014-12-18T16:33:57Z Winkert.e
623510128 2014-08-31T00:00:52Z Niceguyedc [[:en:WP:CLEANER|WPCleaner]] v1.33 - Repaired 1 link to disambiguation page - [[WP:DPL|(You can help)]] - [[MHD]]
623410878 2014-08-30T06:13:52Z Yobot [[WP:CHECKWIKI]] error fixes using [[Project:AWB|AWB]] (10432)
623259006 2014-08-29T02:39:46Z Locksmith1865 Minor spacing changes
623258715 2014-08-29T02:36:29Z 75.159.34.98 /* Practical methods */
623258517 2014-08-29T02:34:23Z 75.159.34.98 /* Practical methods */
623258266 2014-08-29T02:31:53Z 75.159.34.98 /* Practical methods */
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622979092 2014-08-27T04:46:27Z 75.159.34.98 /* Practical methods */
614757473 2014-06-28T13:42:54Z SamuelRiv some fixes and commenting out multiple uncited dubious paragraphs
590276557 2014-01-11T21:53:33Z FrescoBot Bot: [[Wikipedia:Manual of Style/Layout#Standard appendices and footers|standard sections headers]] and minor changes
590149879 2014-01-10T23:54:03Z Aldebaran66 /* Practical methods */ cp
589475971 2014-01-06T18:38:43Z Aldebaran66 /* See also */ Rm link to a specific case and added link to the general article
589475241 2014-01-06T18:32:54Z Aldebaran66 /* Practical methods */ clarify
589474268 2014-01-06T18:25:49Z Aldebaran66 /* See also */ RM link, specifically described in the article.
589473942 2014-01-06T18:23:38Z Aldebaran66 /* Speculative methods */ Added "citation needed" tags
589473072 2014-01-06T18:17:28Z Aldebaran66 /* Types */ Added sections
589471797 2014-01-06T18:07:47Z Aldebaran66 /* Types */ ce
589470312 2014-01-06T17:56:30Z Aldebaran66 I tried to organize this article a little. RM bare url and no lead tags, these have been fixed - but there is more to do...
589429304 2014-01-06T11:19:02Z Skr15081997 Filling in 2 references using [[WP:REFLINKS|Reflinks]]
586989880 2013-12-20T18:45:00Z Aldebaran66 Added {{lead missing}}, {{linkrot}}, {{more footnotes}} and {{ref improve}} tags (within {{multiple issues}}) to article ([[WP:TW|TW]])
586987780 2013-12-20T18:30:44Z Aldebaran66 /* References */ Moved non-specific references to External Links section.
586875079 2013-12-20T01:01:20Z ChrisGualtieri Remove stub template(s). Page is start class or higher. Also check for and do General Fixes + Checkwiki fixes using [[Project:AWB|AWB]]
567819820 2013-08-09T13:58:47Z 62.156.180.251 correct grammos
555476941 2013-05-17T07:14:49Z Gravitophoton refs
553129447 2013-05-02T01:17:57Z Aldebaran66 /* See also */ Added link to Eugene Podkletnov
553126396 2013-05-02T00:49:06Z Scie8 increased hydrodynamic possibilities to Standard Model and Gravinertial fields
553122101 2013-05-02T00:04:32Z Aldebaran66 /* See also */ Added Reactionless drive link
553121011 2013-05-01T23:53:12Z Aldebaran66 Added space stub banner
553120232 2013-05-01T23:45:42Z Aldebaran66 added [[Category:Hypothetical technology]] using [[WP:HC|HotCat]]
553093575 2013-05-01T20:18:30Z Scie8 /* See also */
550125427 2013-04-13T08:45:24Z Gravitophoton added c also
536493246 2013-02-04T10:06:41Z Jesse V. /* References */[[WP:AWB/UM#General|tags]] and [[WP:GENFIXES|general fixes]], removed stub tag using [[Project:AWB|AWB]] (8853)
491311667 2012-05-08T04:04:32Z Helpful Pixie Bot ISBNs (Build KE)
490223788 2012-05-02T01:12:25Z Mattman00000 removed superfluous abbreviation
490223551 2012-05-02T01:10:49Z Mattman00000 grammar corrections
488901631 2012-04-23T23:35:22Z 109.255.179.219
447183457 2011-08-28T19:25:45Z Wasbeer
446803281 2011-08-26T10:50:40Z 126.13.31.82
446471930 2011-08-24T11:23:13Z 126.13.31.82
446471819 2011-08-24T11:22:07Z 126.13.31.82
446307716 2011-08-23T12:20:04Z 126.13.31.82
446307626 2011-08-23T12:19:04Z 126.13.31.82
446306290 2011-08-23T12:05:50Z 126.13.31.82
445641407 2011-08-19T09:26:18Z Patrick
445641250 2011-08-19T09:24:32Z Patrick
434007872 2011-06-13T05:50:22Z 96.233.22.171 Improve balance between justified skepticism and scientifically-based optimism about human ingenuity.
409253496 2011-01-21T23:10:34Z CmdrObot Compact Amazon URL
375822474 2010-07-27T23:37:31Z Vanished user 3.1415926535897932384626433 Sp
375410507 2010-07-25T18:40:53Z 75.158.22.3
375410361 2010-07-25T18:39:50Z 75.158.22.3
375410261 2010-07-25T18:39:08Z 75.158.22.3
375410114 2010-07-25T18:38:13Z 75.158.22.3
375409845 2010-07-25T18:36:35Z 75.158.22.3
375407924 2010-07-25T18:24:59Z 75.158.22.3 /* References */
355946812 2010-04-14T11:20:58Z R'n'B Fix [[WP:DPL|links]] to [[WP:D|disambiguation]] page [[Warp drive]]
341020827 2010-01-31T03:13:26Z Stoinform Add a reference
323798726 2009-11-04T00:16:19Z Grutness nothing paranormal about this at all! restubbed
297857646 2009-06-22T05:18:20Z 75.159.11.25
292535478 2009-05-26T22:00:30Z RussBot Robot: fix [[WP:DPL|links]] to [[WP:D|disambiguation]] page [[Electromagnetic]]
284735041 2009-04-19T02:43:30Z Ldussan
263856706 2009-01-13T18:37:37Z Neurolysis [[Wikipedia:Articles for deletion/Field propulsion]] closed as keep
263403202 2009-01-11T17:02:09Z ජපස Nominated for deletion; see [[Wikipedia:Articles for deletion/Field propulsion]]. ([[WP:TW|TW]])
246280108 2008-10-19T13:08:10Z Meco unreferenced
211235441 2008-05-09T11:28:08Z CultureDrone slight text change
211235315 2008-05-09T11:27:10Z CultureDrone added categories
210343521 2008-05-05T15:35:37Z Addbot Tagging, added [[:Category:Category needed|uncategorised]] tag
210098665 2008-05-04T13:14:17Z 69.128.158.159 /* Field propulsion schemes outside present physics paradigms */
210098624 2008-05-04T13:13:57Z 69.128.158.159 /* Field propulsion schemes within present physics paradigms */
210098591 2008-05-04T13:13:37Z 69.128.158.159 /* Field propulsion schemes within present physics paradigms */
209913706 2008-05-03T15:08:33Z Deepthought137 [[WP:AES|←]]Created page with '== Field propulsion == Field propulsion is the concept of [[spacecraft propulsion]] where no propellant is necessary but instead momentum of the spacecraft is chang...'