- Tumansky R-11
Tumansky R-11 (initially AM-11) is a
turbojet engine.Background
The
Tumansky R-11 was developed by A.A. Mikulin,S.K. Tumansky , andB.S. Stechkin as a twin-spoolaxial-flow high-altitude non-afterburning turbojet forYakovlev Yak-25 RV reconnaissance aircraft. This engine was the first Soviet twin-spool turbojet. It entered production in 1954. The basic design was very successful and it was evolved intoTumansky R-13 andTumansky R-25 . 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 onMiG-21 F, P and U.
* R-11AF-300 - improved version forYakovlev Yak-28 B, L and U.
* R-11F2-300 - new compressor, afterburner and nozzle, used onMiG-21 P, PF and FL.
* R-11AF2-300 - R-11F2-300 adapted forYakovlev Yak-28 I, R and P.
* R-11F2S-300 - upgraded version forMiG-21 PFM, PFS, S, U and UM, and forSukhoi Su-15 TM, UT and UM.Specifications (R-11F2S-300)
jetspecs
type=Afterburningturbojet
length=4,600 mm (181.1 in)
diameter=906 mm (35.7 in)
weight=1,124 kg (2,477 lb)
compressor=Axial compressor
combustion=
turbine=
fueltype=
oilsystem=
power=
thrust=
*38.7 kN (8,708 lbf) military power
*60.6 kN (13,635 lbf) with afterburner
compression=8.9:1
aircon=
turbinetemp=955 °C (1,750 °F)
fuelcon=
specfuelcon=
*97 kg/(h·kN) (0.95 lb/(h·lbf)) at idle
*242 kg/(h·kN) (2.37 lb/(h·lbf)) with afterburner
power/weight=
thrust/weight=53.9 N/kg (5.5:1)
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