Saturn AL-31

AL-31
Saturn AL-31FN turbofan engine
Type Turbofan
National origin USSR/Russia
Manufacturer Lyulka (now NPO Saturn), UMPO, NPC Salyut, HAL India
Major applications Chengdu J-10
Chengdu J-20
Sukhoi Su-27
Sukhoi Su-30MKI
Sukhoi Su-57
Shenyang J-11
Sukhoi S-70 Okhotnik-B

The Saturn AL-31 (originally Lyulka) is a family of axial flow turbofan engines, developed by the Lyulka-Saturn design bureau in the Soviet Union, now NPO Saturn in Russia, originally as a 12.5-tonne (122.6 kN, 27,560 lbf) powerplant for the Sukhoi Su-27 long range air superiority fighter. The AL-31 currently powers the Su-27 family of combat aircraft and some variants of the Chengdu J-10 multirole jet fighter. Assembly of the engine is also performed under license in India by HAL, for the Sukhoi Su-30MKI. Improved variants power the fifth-generation Sukhoi Su-57 and Chengdu J-20.