The share of composite materials in the design of the fifth generation Su-57 fighter is 25%, as reported by TASS at the Rostec State Corporation on the occasion of the 25th anniversary of the first flight of the Su-47 Berkut experimental aircraft developed by the Sukhoi Design Bureau (part of the United Aviation Corporation, UAC).
Today, the use of composite materials has become ubiquitous. For example, a wing of the Russian medium-range liner MS-21 was created from them. At one time, the Su-47 Berkut fighter became the leading Russian aircraft in terms of the content of composite materials. In fact, it became the basis for developing such technologies; its design is made of 13% composites, which was a real breakthrough by the standards of the 1990s. Most of the composites were used in the aircraft wing, in which their share was about 50%.
The Su-47 “Berkut” – an aircraft with a swept back wing, was a prototype designed for testing layout, technical and technological solutions as part of work on a new generation of fighters. Igor Votintsev, test pilot of the Sukhoi Design Bureau, lifted the car into the air in September 1997. This experimental fighter showed that modern materials make it possible to create designs that previously seemed like science fiction. The Berkut was first shown to the general public at the MAKS-1999 air show, where it made a demonstration flight.
It was also reported that developments on the unique Su-47 Berkut fighter are used to create drones and civil aircraft.