The Sukhoi Su-27 (Russian: Сухой Су-27, NATO reporting name: Flanker1) is a single-seat fighter aircraft, powered by two Mach 2 class turbofan engines, designed in the Soviet Union by Sukhoi in the 1970s. It was projected as a direct competitor to the large American fourth-generation fighters, with a long range of 3,530 km, heavy weaponry, sophisticated avionics, and great agility. The Su-27 most of the time performs air superiority missions, but it is prepared to perform almost any combat operation. Complementing the lighter Mikoyan MiG-29 in the Soviet Air Force (now in the Russian Air Force), its closest American competitor is the F-15 Eagle.