Sukhoi After the war, Sukhoi and his team were among the first Soviet aircraft designers who led the work on jet aircraft, creating several experimental jet fighters. Sukhoi started developing two jet fighters, the Sukhoi Su-5 and the Sukhoi Su-7 before 1945. The Su-5 is a mixed power jet fighter, using both a propellor and a motorjet to power it, but the experiment was later cancelled even though the fighter had a maiden flight in April 6, 1945. The Su-7 is a swept-wing, supersonic, air superiority fighter, and it was successful as it was adopted by the Soviet Air Forces in
Sukhoi Su-15 the Su-15 was abruptly retired from the new Russian Air Force in 1993 to comply with the Treaty on Conventional Armed Forces in Europe. Most were hastily scrapped in favour of more advanced interceptors, including the Su-27 and MiG-31, but some are in reserve storage for emergency use. In Ukraine, the last Su-15s (at Kramatorsk and Belbek) were withdrawn from use in 1996. Some Western reports indicate that the Su-15TM was also designated Su-21 and the Su-15UM Su-21U. These reports are apparently incorrect. Designation Su-21 was reserved for Su-17M4 but never used. Sukhoi Su-15 The Sukhoi Su-15 (NATO reporting name: