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Falcon 9 B1051

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Falcon 9 booster B1051
B1051 landing during RADARSAT mission
Role First stage of orbital class rocket
National origin United States
Type Falcon 9 first stage booster
Manufacturer SpaceX
Construction number B1051
First flight 2 March 2019 (SpaceX Demo-1)
Last flight 12 November 2022 (Intelsat G-31/G-32)
Flights 14
Status Expended

Falcon 9 Booster B1051 was a reusable Falcon 9 Block 5 booster manufactured by SpaceX. It was the sixth Falcon 9 Block 5 booster ever built. It was the first booster to be used eight, nine, ten, eleven and twelve times respectively and the first booster to launch a commercial payload on seventh flight. It launched first Dragon 2 spacecraft to orbit, RADARSAT Constellation, SXM-7 and 10 Starlink missions. It flew for a last time on the Intelsat G-31/G-32 mission and was expended.

Flight history[edit]

B1051 started its service on March 2 2019, for the SpaceX Demo-1 Mission. It was the first orbital test of a SpaceX Dragon 2 spacecraft. The flight marked 70th flight for the Falcon 9 and the 3rd SpaceX flight for 2019. After stage separation, booster landed successfully on the ASDS Of Course I Still Love You, marking SpaceX's 35th successfull Falcon 9 booster recovery.

Second flight

B1051 flew for the second time on June 12 2019 launching three RADARSAT satellites. It was the most valuable commercial payload put into orbit to date. Originally B1050 was planned to be used for this mission, however after failed landing attempt[1] it was replaced by the B1051. Booster performed a boostback burn and landed on a SpaceX's Landing Zone 4 marking 40th successfull Falcon 9 booster recovery.

Third flight

On January 29 2020 B1051 launched the 3rd Starlink mission. This launch made B1051 one of a few boosters to be launched from all SpaceX launch pads. This flight also marked 2nd orbital and 3rd total launch of Falcon 9 in 2020 after Crew Dragon In-Flight Abort Test earlier this month. 60 Starlink satellites were successfully placed into Low Earth Orbit, booster landed on Of Course I Still Love You droneship and one of two payload fairings was caught by the Ms. Tree recovery vessel.

Fourth flight

7th dedicated and 6th commercial Starlink mission launched on April 22 2020 and carried 60 Starlink satellites to Low Earth Orbit. Booster made a successful touchdown on Of Course I Still Love You droneship. It surpassed the Atlas V to become the most flown operational United States rocket. Used fairings from the AMOS-17 mission in 2019.

Fifth flight

9th commercial Starlink mission launched on August 7 2020 and carried 57 Starlink satellites to Low Earth Orbit. The mission also carried the SXRS-1 (BlackSky Global 7 and 8) satellites.[2] Booster made a successful touchdown on Of Course I Still Love You droneship.

Sixth flight

13th commercial Starlink mission launched on October 18 2020 and carried 60 Starlink satellites to Low Earth Orbit. Booster made a successful touchdown on Of Course I Still Love You droneship. Both fairing halves were recovered successfully on their respective ships but one half broke the net on Ms. Tree.

Seventh flight

On December 13 2020 B1051 launched the SXM-7 satellite to a sub-synchronous orbit and it injected itself into its desired orbit to full GTO. The booster landed successfully on Just Read the Instructions droneship. It was the first time a commercial primary payload flew on a booster which had been flown more than 4 times before. However, after more than one month after launch, the satellite suffered undisclosed failures during in-orbit testing.[3]

Eighth flight

16th commercial Starlink mission launched on January 10 2021 and carried 60 Starlink satellites to Low Earth Orbit. This also made B1051 the first booster to reach 8 launches and landings in a row[4]surpassing B1049, the first booster to conduct 6 and 7 flights in a row. B1051 made a successful touchdown on Of Course I Still Love You droneship.

Ninth flight

21st commercial Starlink mission launched on March 14 2021 and carried 60 Starlink satellites to Low Earth Orbit. With this launch, B1051 was the first booster to reach 9 flights. B1051 made a successful touchdown on Of Course I Still Love You droneship.

Tenth flight

27th commercial Starlink mission launched on May 9 2021 and carried 60 Starlink satellites to Low Earth Orbit. With this launch, B1051 was the first booster to reach 10 flights.[5]B1051 made a successful touchdown on Of Course I Still Love You droneship.

Eleventh flight

Starlink mission launched on December 18 2021. Third mission for a 53.2 degree inclination orbit and carried 60 Starlink satellites to Low Earth Orbit. With this launch, B1051 was the first booster to reach 11 flights. B1051 made a successful touchdown on Of Course I Still Love You droneship.

Twelveth flight

Starlink mission launched on March 19 2022 and carried 60 Starlink satellites to Low Earth Orbit. This launch marked 12 times a booster has flown.[6]B1051 made a successful touchdown on Just Read the Instructions droneship.

Thirteenth flight

Starlink mission launched on July 17 2022 and carried 60 Starlink satellites to Low Earth Orbit. Last launch of this booster before it was expended, and it was the 8th launch within 30 days. B1051 made a successful touchdown on Just Read the Instructions droneship.

Fourteenth flight

Last B1051's flight delivered Intelsat Galaxy-31 and Galaxy-32 satellites into Geostationary Transfer Orbit. Falcon 9 was launched on November 12 2022. Due to payload mass and targeted orbit, booster was expended. First expended Falcon 9 mission of the year since the In-Flight Abort Test in 2020.[7]

Launches[edit]

Flight # Launch date

(UTC)

Mission # Payload Pictures Launch pad Landing location Notes
1 March 2, 2019 69 SpaceX Demo-1
LC-39A Of Course I Still Love You First flight of B1051 and first Dragon 2 orbital flight.
2 June 12, 2019 72 RADARSAT Constellation
SLC-4E LZ-4 Most valuable commercial payload put into orbit to date.
3 January 29, 2020 80 Starlink V1 L3 SLC-40 Of Course I Still Love You
4 April 22, 2020 84 Starlink V1 L6 LC-39A Of Course I Still Love You
5 August 7, 2020 90 Starlink V1 L9 & BlackSky LC-39A Of Course I Still Love You Two rideshare satellites were on this mission.
6 October 18, 2020 95 Starlink V1 L13
LC-39A Of Course I Still Love You
7 December 13, 2020 102 SXM-7 SLC-40 Just Read the Instructions First reuse of fairings on a commercial launch.
8 January 20, 2021 105 Starlink V1 L16 LC-39A Just Read the Instructions Fist Falcon 9 booster to fly for a 8th time and B1051's fastest turnaround time.
9 March 14, 2021 111 Starlink V1 L21
LC-39A Of Course I Still Love You First Falcon 9 booster to fly for a 9th time.
10 May 9, 2021 117 Starlink V1 L27 SLC-40 Just Read the Instructions First Falcon 9 booster to fly for a 10th time.
11 December 18, 2021 132 Starlink Group 4-4
SLC-4E Of Course I Still Love You First Falcon 9 booster to fly for a 11th time.
12 March 19, 2022 145 Starlink Group 4-12 SLC-40 Just Read the Instructions First Falcon 9 booster to fly for a 12th time.
13 July 17, 2022 165 Starlink Group 4-22
SLC-40 Just Read the Instructions
14 November 12, 2022 185 Intelsat G-31/G-32 SLC-40 No Attempt Last flight of Booster 1051.

References[edit]


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