. "3"^^ . . "The Sukhoi Su-47 Berkut (Russian: \u0421\u0443-47 \u0411\u0435\u0440\u043A\u0443\u0442\u2014Golden Eagle) (NATO reporting name Firkin), also designated S-32 and S-37 (not to be confused with the twin-engined delta canard design offered by Sukhoi in the early 1990s under the designation Su-37) during initial development, was an experimental supersonic jet fighter developed by Sukhoi Aviation Corporation. A distinguishing feature of the aircraft was its forward-swept wing that gave the aircraft excellent agility and maneuverability."@en . .