Which Soviet Union fighter aircraft, nicknamed "Sushka," uses the Saturn AL-31 engine?
Saturn AL-31: The Saturn AL-31 is a family of military turbofan engines. Saturn AL-31:  It was developed by Lyulka, now NPO Saturn, of Soviet Union, originally for the Sukhoi Su-27 air superiority fighter. Sukhoi Su-27: The Sukhoi Su-27 (Russian: Сухой Су-27 ; NATO reporting name: Flanker; nicknamed "Sushka" in USSR) is a twin-engine supermaneuverable fighter aircraft designed by Sukhoi.
Sukhoi Su-27