Sjeldne fly - Su-47 Firkin

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Wikipedia: The Sukhoi Su-47 Berkut (Russian: Сухой Су-47 Беркут—Golden Eagle) (NATO reporting name Firkin^[1]), also designated S-32 and S-37 (not to be confused with the twin-engined delta canard design^[2] 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^[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.^[4][5][6]