Sukhoi Su-47

This article is about the aircraft at one time designated S-37. For the aircraft designated Su-37, see Sukhoi Su-37.

Su-47 Berkut
The Su-47 at an airshow in June 2007
General information
TypeExperimental aircraft/Technology demonstrator
ManufacturerSukhoi
Designer
StatusCancelled
Primary userRussian Air Force
Number built1
History
First flight25 September 1997 (1997-09-25)
Developed fromSukhoi Su-37

The Sukhoi Su-47 Berkut (Russian: Сухой Су-47 «Беркут», lit. 'Eagle' in Kazakh language) (NATO reporting name Firkin), also designated S-32 and S-37 during initial development, was a Russian experimental supersonic technology demonstrator developed by the JSC Sukhoi Company. A distinguishing feature of the aircraft was its forward-swept wing intended to give the aircraft increased agility and maneuverability. While serial production of the type never materialized and the configuration was not further pursued, the sole aircraft produced served as a technology demonstrator prototype for a number of technologies later used in the Su-35 as a fourth-generation fighter, and the Su-57 as a fifth-generation fighter.

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