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Sukhoi T-3
The Sukhoi T-3 was a prototype Soviet fighter aircraft.
==Development==
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 swept wing aircraft (''S'' stood for ''strelovidniy'', стреловидный, swept wing), the T-3 had a delta wing with a leading edge sweep of 57° (''T'' stood for ''treugolniy'', треугольный, delta wing).〔Green, William. "The Great Book of Fighters". 2001. MBI Publishing.ISBN 0760311943〕 Aside from the wings, the two aircraft shared the basic design as well as the Lyulka AL-7 turbojet engine. Since the T-3 was intended to be an interceptor, it was fitted with the ''Almaz'' (Алмаз, Diamond) radar housed in the air intake. The prototype first flew on 26 May 1956.
The T-3 was ordered into production at Factory No.153 but events overtook it when a revised specification was issued for the Interceptor fighter role. Three aircraft were completed and transported by rail to the OKB-51 factory near Moscow, where only one was to fly in as-built condition and all three prototypes were modified for various test programmes, becoming, for example, the T-39, T-49, PT-7, PT-8 and other experimental aircraft.〔Gordon, Yefim. ''Sukhoi Interceptors". Hinkley, Midland. 2004. ISBN 1-85780-180-6〕 To investigate different radar radome configurations as well as develop radar 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.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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