Tumansky designed the first turbojet of entirely Soviet origin to be produced in quantity, the AM-5, in 1950. A later version, the AM-9, powered the Mikoyan-Gurevich MiG-19 and Yakovlev Yak-25 aircraft. The AM-9 evolved into the R-11, a slightly larger two-shaft engine, in early 1956. The R-11 engine powered the Mikoyan-Gurevich MiG-21 fighter and Yakovlev Yak-28, which the Soviet air force used as a fighter, trainer, and reconnaissance aircraft.
Tumansky developed increasingly powerful versions of this engine. The final production model was the 60,800 N (13,668 lb) thrust R-11 F2S-300, which was also manufactured in both India and China under license. Some 20,000 R-11 engines were manufactured before production ended in 1966.
Transferred from the United States Air Force.
Country of Origin: Union of Soviet Socialist Republics
Length 259 cm (102 in.), Diameter 68.6 cm (27 in.) (front) and 88.9 cm (35 in.) (rear)
Overall - Inconel, Steel, Aluminum, Stainless Steel, Titanium ,Paint, Brass, Preservative coating, Plastic, Asbestos
Thrust/Speed: 50,009 N (11,243 lb.) with afterburner (initial R-11 rating)
Compressor: 6-stage low pressure and 3-stage high pressure
Combustor: Can-annular, 10 flame tubes
Turbine: Single-stage high pressure, single-stage low pressure axial