Russian Su-57 Stealth Fighter Jet After Upgrade First Flight Test Shocked the World

Russian Su-57 Stealth Fighter Jet After Upgrade First Flight Test Shocked the World. After being upgraded, the Russian Sukhoi Su-57 stealth fighter jet finally successfully conducted its first flight test at the Gromov Flight Testing Institute airfield. The Sukhoi Design Bureau at the United Aircraft Corporation undertook work to further develop the Sukhoi Su-57 stealth fighter jet. The plane was flown by Sukhoi Design Bureau test pilot Hero of Russia Sergey Bogdan and the flight lasted 56 minutes and went off without a hitch.