The Tumansky R-11 (initially AM-11) is a

Soviet The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

Cold War The Cold War was a period of global Geopolitics, geopolitical rivalry between the United States (US) and the Soviet Union (USSR) and their respective allies, the capitalist Western Bloc and communist Eastern Bloc, which lasted from 1947 unt ...

-era

turbojet The turbojet is an airbreathing jet engine which is typically used in aircraft. It consists of a gas turbine with a propelling nozzle. The gas turbine has an air inlet which includes inlet guide vanes, a compressor, a combustion chamber, and ...

engine.

Design and development

The

Tumansky Sergei Konstantinovich Tumansky (; – 9 September 1973) was a designer of Soviet aircraft engines and the chief designer in the Tumansky Design Bureau, OKB-300. He worked in TsIAM (1931–38 and in 1940), and at the aircraft-engine plant N 29, ...

R-11 was developed by A.A. Mikulin,

Sergei Tumansky Sergei Konstantinovich Tumansky (; – 9 September 1973) was a designer of Soviet aircraft engines and the chief designer in the Tumansky Design Bureau, OKB-300. He worked in TsIAM (1931–38 and in 1940), and at the aircraft-engine plant N 29, ...

, and B.S. Stechkin as a twin-spool

axial-flow An axial compressor is a gas compressor that can continuously pressurize gases. It is a rotating, airfoil-based compressor in which the gas or working fluid principally flows parallel to the axis of rotation, or axially. This differs from other ...

high-altitude non-afterburning turbojet for

Yakovlev Yak-25 The Yakovlev Yak-25 (List of NATO reporting names for fighters, NATO designation Flashlight-A/Mandrake) is a swept wing, turbojet-powered interceptor aircraft, interceptor and reconnaissance aircraft built by Yakovlev and used by the Soviet Un ...

RV 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 The Yakovlev Yak-28 () is a swept wing, turbojet-powered combat aircraft used by the Soviet Union. Produced initially as a tactical medium bomber, it was also manufactured in reconnaissance aircraft, reconnaissance, electronic warfare aircraft, ...

.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 The Tumansky R-21 was a Soviet turbojet engine of the 1960s. Used for development only, the project was canceled. Design and development The Tumansky R-21 was developed at Tushino motor plant (part of OKB-300), headed by Nikolai Georgievich ...

. 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-21 The Mikoyan-Gurevich MiG-21 (; NATO reporting name: Fishbed) is a supersonic jet aircraft, jet fighter aircraft, fighter and interceptor aircraft, designed by the Mikoyan, Mikoyan-Gurevich OKB, Design Bureau in the Soviet Union. Its nicknames in ...

F, 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

P, PF and FL. * R-11AF2-300 - R-11F2-300 adapted for Yakovlev Yak-28I, R and P. * R-11F2S-300 - upgraded version for

PFM, PFS, S, U and UM, and for

Sukhoi Su-15 The Sukhoi Su-15 (NATO reporting name: Flagon) is a twinjet supersonic interceptor aircraft developed by the Soviet Union. It entered service in 1965 and remained one of the front-line designs into the 1990s. The Su-15 was designed to replace t ...

, UT and UM. * Shenyang WP-7, Chinese license built copies of the R-11

Applications

Mikoyan-Gurevich MiG-21 The Mikoyan-Gurevich MiG-21 (; NATO reporting name: Fishbed) is a supersonic jet fighter and interceptor aircraft, designed by the Mikoyan-Gurevich Design Bureau in the Soviet Union. Its nicknames include: "''Balalaika''", because its planf ...

* Yakovlev Yak-26 * Yakovlev Yak-27 * Yakovlev Yak-28

Specifications (R-11F2S-300)

References

Citations

Sources

* Gunston, Bill. ''World Encyclopedia of Aero Engines''. Cambridge, England. Patrick Stephens Limited, 1989. .

External links

LeteckeMotory.cz - R-11 -
{{Tumansky aeroengines Tumansky aircraft engines 1950s turbojet engines