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/HAL FGFA Sukhoi's director Mikhail Pogosyan stated: "We will share the funding, engineering and intellectual property in a 50–50 proportion", in an interview with "Asia Times". On 11 September 2010, it was reported that India and Russia had agreed on a preliminary design contract, subject to Cabinet approval. The joint development deal would have each country invest $6 billion and take 8–10 years to develop the FGFA fighter. In December 2010, a memorandum of understanding for preliminary design of the Indo-Russian fighter was reportedly signed between Hindustan Aeronautics Ltd (HAL), and Russian companies Rosoboronexport and Sukhoi. The preliminary design will cost $295