Sukhoi T-3 and missile sub-systems, two of the prototypes were converted to become the PT-7 and PT-8. The PT-7 had a variable intake ramp, while the PT-8 had an extended nose with a translating centerbody. Although not proceeded with, the T-3 served as the basis for what would eventually become the Sukhoi Su-9, forming the backbone of the PVO during the 1960s. Sukhoi T-3 The Sukhoi T-3 was a prototype Soviet fighter aircraft. Starting in the early 1950s, the development of the T-3 proceeded in parallel with the S-1 which would eventually become the Sukhoi Su-7. While the S-1 was a conventional
Sukhoi Su-24 forces, split 321 with the Russian Air Force and 94 with the Russian Navy. The Russian Air Force will eventually replace the Su-24 with the Sukhoi Su-34. The Soviet Union used some Su-24s in the Soviet–Afghan War, with an initial round of strikes in 1984 and a second intervention at the end of the war in 1988. No Su-24 were lost. On October 13, 1990, Syrian Air Force jets entered Lebanese air space in order to strike General Michel Aoun's military forces. Seven Su-24 jets were used in this operation. During Operation Desert Storm, the Iraqi Air Force evacuated 24