The first aircraft design to receive the Su-35 designation had its origins in the early-1980s, at a time when the Su-27 was entering service with the Soviet armed forces in its definitive version, the T-10S.
The first aircraft design to receive the Su-35 designation had its origins in the early-1980s. At the time, the Su-27 was entering service with the Soviet armed forces in its definitive production version, which has the internal company designation of T-10S.