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

Soviet The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nation ...

Cold War-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, an ...

engine.

Design and development

The

Tumansky Sergei Konstantinovich Tumansky (russian: Серге́й Константинович Туманский; – 9 September 1973) was a designer of Soviet aircraft engines and the chief designer in the Tumansky Design Bureau, OKB-300. He worked i ...

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

Sergei Tumansky Sergei Konstantinovich Tumansky (russian: Серге́й Константинович Туманский; – 9 September 1973) was a designer of Soviet aircraft engines and the chief designer in the Tumansky Design Bureau, OKB-300. He worked i ...

, 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 ( NATO designation Flashlight-A/Mandrake) was a swept wing, turbojet-powered interceptor and reconnaissance aircraft built by Yakovlev and used by the Soviet Union. Design and development The Yak-25 originated from a need ...

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 The Yakovlev Yak-26, OKB designation Yak-123, was a Soviet tactical supersonic bomber aircraft flown at the Tushino air show on 24 June 1956. The model did not enter service. Design and development The Yak-123-1 prototype was developed from th ...

and

Yakovlev Yak-27 The Yakovlev Yak-27 (NATO reporting name "Flashlight-C") was a family of Soviet supersonic aircraft developed in 1958 from the Yak-121 prototype. The most built variant was the tactical reconnaissance Yak-27R (NATO reporting name "Mangrove"). D ...

, as well as the

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

.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 The Tumansky R-13 is a Soviet turbojet engine designed by Sergei Alekseevich Gavrilov. Design and development The Tumansky R-13 is a development of the successful Tumansky R-11 engine. It is a two-spool axial-flow turbojet featuring a new five ...

and

Tumansky R-25 The Tumansky R-25 is a turbojet engine, which is seen as the ultimate development of Tumansky R-11. It was designed under the leadership of Sergei Alekseevich Gavrilov. Design and development The Tumansky R-25 was designed as a replacement for ...

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 M ...

. 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 (russian: Микоян и Гуревич МиГ-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 nickn ...

F, P and U. * R-11AF-300 - improved version for

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

B, 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

I, R and P. * R-11F2S-300 - upgraded version for

PFM, PFS, S, U and UM, and for Sukhoi Su-15, UT and UM. * Shenyang WP-7, Chinese license built copies of the R-11

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