Tumansky R-11

( Initially called AM-11 ) The Tumanski R -11 is a twin- jet engine, which was manufactured in the USSR in large series.

History

The R- 11 was developed by Alexander Mikulin, Sergei Tumanski and Boris Stechkin from May 1953, is the first in the Soviet Union developed two-shaft turbofan engine. It was based on the experience of Tumanski RD -9 and 1958 was used in different versions of the Yak- 25, MiG -21 and Sukhoi Su -15. The R-11 is being built in China as well as Wopen WP -7 and experienced a similar fate as the Tumanski R- 13th Originally both were to be built in China under license, but due to the Sino-Soviet split, the license and the technical support was withdrawn. Under the direction of chief designer Jiang Hepu the Chinese managed the successful reconstruction of both engines, where the term WP -7 and WP -13 was given. It was replaced later in the MiG -21 through R-13. It was built nearly 21,000 of them to the end of its service life, making it one of the most produced jet aircraft engines.

Construction

The first production version ( the R- 11F -300) is equipped with an annular combustion chamber, a three-stage supersonic low-pressure compressor, three stage high pressure compressor and a transsonischem each stage high and low pressure turbine. The second compressor stage is equipped with jacketed sheets to prevent resonance. The high-pressure shaft contained a rev limiter and a connection for the transmission to deliver power from the secondary devices after the last stage. On this transmission of the starter / generator, two hydraulic pumps, two fuel pumps, a compressor for air and a tachometer was connected. The annular combustion chamber had 10 tubes two of which were equipped with discharge igniters. The afterburner consists of an electro- hydraulically adjustable iris -shaped axisymmetric nozzle and three Kraftstoffeinspitzringen. Compared to the previous versions, the annular combustor is changed, the high-pressure turbine is increased by 15 mm in diameter, and the low pressure turbine equipped with narrower leaves.

Versions

  • RD -11 ( AM-11 ) - first version, without afterburner, used in the experimental aircraft of Mikoyan -Gurevich E -2A, E -4 and E- fifth Problems in testing necessitated a revision necessary
  • R-11 -300 - first production version without afterburner, production since 1954
  • R -11A -300 - modification of the R -11- 300 for the installation in the wing pods of the Yakovlev Yak -28
  • R- 11W -300 - special version for great heights without afterburner, built into the high altitude reconnaissance version of the Yak- 28
  • R -11F -300 - first production version ( tactical designation R - 37F ) with an afterburner and 38.2 / 53.4 kN thrust, built in 1956, used in the MiG -21F, F -13, P and U as well as Su- 15WD.
  • R- 11AF -300 - improved version of the Yakovlev Yak - 28B, L and U.
  • R- 11F2 -300 - version with new compressor and afterburner nozzle with 38.7 / 60.0 kN thrust, from 1962 used in the MiG- 21P, F -13, PF and FL.
  • R- 11AF2 -300 - modified R- 11F2 -300 for Yakovlev Yak - 28I, R and P.
  • R- 11F2S -300 - from 1965 delivered improved version of the MiG- 21PF, PFM, PFS, R, S, U, U.S. and UM Sukhoi Su- 15TM and for, UT and UM 38.2 / 60.6 kN thrust. It is prepared for a system for boundary layer control (PLC ) system, and also has two selectable by the pilot Nachbrennerstufen so that faster supersonic velocity can be achieved.
  • R- 11AF3 -300 - trial version with higher performance and design features of the first Tumanski R-13 for installation in the Yak- 28PM
  • R- 11F2SK -300 - version with thrusters corrector KDS MiG- 21MF for 38.2 / 60.6 kN thrust
  • WP- 7 - Chinese copy of the R -11F -300 for use on the Chengdu J- 7I and F -7A 38.2 / 53.4 kN thrust. It is distinguished by a special combination of circular and star-shaped flame stabilizer brackets on the afterburner of the Russian models. First successful test in October 1965
  • WP -7B - improved version of WP -7 for J- 7II, F -7B, JJ and FT -7 40.2 / 58.8 kN thrust
  • WP- 7B ( BM) - improved version of the F- 7M, P 40.2 / 59.8 kN thrust
  • WP- 7F - again improved version of the J- 7E with 44.1 / 63.7 kN thrust

The general naming scheme for the Soviet jet engines using the example of R- 11F2S -300 is:

  • R = reactive = jet engine
  • 11 = number
  • F = Forsasch = afterburner
  • 2 = 2 (improved ) series
  • S = PLC system ( blow on the boundary layer )
  • 300 = Index for OKB Tumanski

Specifications

Polish Aviation Museum Sergei Tumansky Tumansky RD-9 Tumansky R-13 Chengdu J-7
786482
de