Su-27UB Flanker C History The Sukhoi Su-27 is a one-seat Mach-2 class jet fighter originally manufactured by the Soviet Union, and designed by the Sukhoi Design Bureau. It was intended as a direct competitor for the large United States fourth generation fighters, with long 3,530 km range, heavy armament, sophisticated avionics and high agility. The Su-27 most often flies air superiority missions, but is able to perform almost all combat operations. Complementing the smaller MiG-29, its closest US counterpart is the F-15 Eagle. There are several related developments of the Su-27 design. The Su-30 is a two-seat, dual-role fighter for all-weather, air-to-air and air-to-surface deep interdiction missions; comparable to F-15E Strike Eagle. Su-33 Â‘Flanker-DÂ’ is a navy fleet defense interceptor for use on aircraft carriers; comparable to F/A-18E/F Super Hornet. Further versions include the side-by-side 2-seat Su-34 Â‘FullbackÂ’ strike variant and the Su-35 Â‘Flanker-EÂ’ improved air defense fighter.