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From Wikipedia, the free encyclopedia
The Tumansky R-11 (initially AM-11) is a Soviet Cold War-era turbojet engine.
| R-11 | |
|---|---|
| |
| Preserved Tumansky R-11 turbojet engine at the Polish Aviation Museum | |
| Type | Turbojet |
| National origin | Soviet Union |
| Manufacturer | Tumansky |
| First run | 1956 |
| Major applications | Sukhoi Su-15 Mikoyan-Gurevich MiG-21 Yakovlev Yak-28 |
| Number built | 20,900 |
The Tumansky R-11 was developed by A.A. Mikulin, Sergei Tumansky, and B.S. Stechkin as a twin-spool axial-flow high-altitude non-afterburning turbojet for Yakovlev Yak-25RV reconnaissance aircraft. This engine was the first Soviet twin-spool turbojet. It was first run in early 1956[1] and was later employed in some variants of the Yakovlev Yak-26 and Yakovlev Yak-27, as well as the Yak-28.[2] The R-11's basic design was very successful and it was later developed into the Tumansky R-13 and Tumansky R-25 along with the experimental Tumansky R-21. A total of 20,900 R-11 engines were built.
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