The [B]Sukhoi Su-27[/B] (Russian: Сухой Су-27) (NATO reporting name: [i]Flanker[/i]) is a twin-engine super-maneuverable fighter [[jet]] designed by Sukhoi. 

It was intended as a direct competitor for the large United States fourth generation fighters, with 3,530-kilometre (1,910 nmi) range, heavy armament, sophisticated avionics and high maneuverability. 

The Su-27 most often flies air superiority missions, but is able to perform almost all combat operations. Complementing the smaller [[MiG-29]], the Su-27's 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. The [[Su-33]] ‘Flanker-D’ is a navy fleet defense interceptor for use on aircraft carriers. Further versions include the side-by-side 2-seat Su-34 ‘Fullback’ strike variant and the [[Su-35]] ‘Flanker-E’ improved air defense fighter.
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