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 (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 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.



Specifications (R-11F2S-300)

General characteristics



See also



  1. ^ Gunston 1989, p.167.
  2. ^ Goebel, Greg. "The Yakovlev Yak-25 & Yak-28." AirVectors. Retrieved: 17 July 2012.


  • Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9.