The Tumansky R-11 (initially AM-11) is a Soviet Cold War-era turbojet engine.
Design and development 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 1956Gunston 1989, p.167. and was later employed in some variants of the Yakovlev Yak-26 and Yakovlev Yak-27, as well as the Yak-28.Goebel, Greg. "The Yakovlev Yak-25 & Yak-28." AirVectors. Retrieved: 17 July 2012. 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.
Variants R-11V-300 - first production version, high-altitude, non-afterburning R-11F-300 (R-37F) - afterburning version, entered production in 1956, used on MiG-21F, P and U. R-11AF-300 - improved version for Yakovlev Yak-28B, L and U. R-11F2-300 - new compressor, afterburner and nozzle, used on MiG-21P, PF and FL. R-11AF2-300 - R-11F2-300 adapted for Yakovlev Yak-28I, R and P. R-11F2S-300 - upgraded version for MiG-21PFM, PFS, S, U and UM, and for Sukhoi Su-15, UT and UM. Shenyang WP-7, Chinese license built copies of the R-11
Applications Sukhoi Su-15 Mikoyan-Gurevich MiG-21 Yakovlev Yak-25 Yakovlev Yak-26 Yakovlev Yak-27 Yakovlev Yak-28
Specifications (R-11F2S-300)
See also List of aircraft engines Pratt & Whitney J57
References Citations
Sources
Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. .
External links
LeteckeMotory.cz - R-11 -