The Sukhoi Su-47 Berkut also designated S-32 and S-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[3] that gave the aircraft excellent agility and maneuverability. While serial production of the type never materialized, the sole aircraft produced served as a technology demonstrator prototype for a number of advanced technologies later used in the 4.5 generation fighter SU-35BM and current fifth-generation jet fighter prototype Sukhoi PAK FA T-50.

 

On 11 August 2014, Commander-in-chief of the Russian Air Forces, Colonel General Viktor Bondarev claimed that Russia is still continuing the research and development of Su-47 or similar forward-swept wing fighters. The new prototypes of such aircraft will be unveiled in the near future.