Mikoyan-Gurevich MiG-21I Analog
| MiG-21I / A-144 Analog | |
|---|---|
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| |
| Role | Experimental aircraft |
| National origin | Soviet Union |
| Manufacturer | Mikoyan-Gurevich |
| Number built | 2 |
| Developed from | Mikoyan-Gurevich MiG-21 |
The Mikoyan-Gurevich MiG-21I Analog (Russian: Микоян-Гуревич МиГ-21и Аналог; also know as the A-144 and 21-11) was a Soviet experimental aircraft modified from the MiG-21 airframe. It was developed as a technology test-bed for the wing design of the Tupolev Tu-144.
Design and development[edit]
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As the design of the Tu-144 was progressing, a delta wing design was chosen. However, engineers were unsure whether a "pure delta" (no tailplane) design was viable, or whether it was necessary to keep an horizontal stabilizer, which would have resulted in an aerodynamic design reminiscent of the MiG-21. The experience on supersonic delta wing design was limited, and so were supersonic wind tunnel testing capabilities. Thus, it was decided to modify an existing Mach 2 capable aircraft, specifically a MiG-21 fighter, to fly-test a scale model of Tu-144's wing design, in the proposed tailless configuration, in all flight regimes.[1][2]
This project parallels the British BAC 221, which was a modified Fairey Delta 2 manufactured to flight-test a scale model of the Concorde wing design.
Two prototypes were built from MiG-21 aiframes, with slight design variations, mostly regarding slats. The wing is a 30% scale version of the Tu-144's wing. The first flight occurred in 1968, followed by an extensive flight test program. As low-speed manoeuvrability was improved compared to the regular MiG-21 design, it was considered to reuse this aerodynamic condiguration for a ground-attack aircraft. However, the MiG-27 design, featuring variable-geometry wings, was selected instead.[3]
Aircraft on display[edit]
One of the two Mig-21Is is preserved at Monino Central Air Force museum. It is displayed next to a Tupolev-144.[4]
References[edit]
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Media related to Mikoyan-Gurevich MiG-21I Analog at Wikimedia Commons
- ↑ Sergueï Choumiline, Экспериментальная «миготушка», М-Хобби No11 (150), 2013
- ↑ Donald, David (1999). The Encyclopedia of Civil Aircraft. San Diego, CA: Thunder Bay Press. p. 746. ISBN 1-57145-183-8. Search this book on
- ↑ "MiG-21I (21-11; A-144) "Analog" – Испытатели".
- ↑ Korolkov, B.; Kazashvili, V. (1996). A guide to the Russian Federation Air Force Museum at Monino. Atglen, PA: Schiffer Pub. ISBN 0-7643-0076-8. OCLC 36469578. Search this book on
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