Russian Su-47 Berkut fighter jet marks 25 years

Su-47  Berkut (Golden eagle) jet, the predecessor of the fifth-generation Su-57, made the maiden flight 25 years ago. first flown on September 25, 1997 by Igor Votintsev, test pilot of the Sukhoi Design Bureau, is considered one of the most unusual aircraft. First of all, due to its main feature - the reverse sweep wing. Not so noticeable externally, but no less advanced technologies in the Su-47 are a digital control system and composite materials.