The Sukhoi T-3 was a prototype

Soviet The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

fighter aircraft Fighter aircraft (early on also ''pursuit aircraft'') are military aircraft designed primarily for air-to-air combat. In military conflict, the role of fighter aircraft is to establish air supremacy, air superiority of the battlespace. Domina ...

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 The Sukhoi Su-7 ( NATO designation name: Fitter-A) is a swept wing, supersonic fighter aircraft developed by the Soviet Union in 1955. Originally, it was designed as a tactical, low-level dogfighter, but was not successful in this role. On the ...

. While the S-1 was a conventional

swept wing A swept wing is a wing angled either backward or occasionally forward from its root rather than perpendicular to the fuselage. Swept wings have been flown since the pioneer days of aviation. Wing sweep at high speeds was first investigated in Ge ...

aircraft (''S'' stood for ''strelovidniy'', стреловидный, swept wing), the T-3 had a

delta wing A delta wing is a wing shaped in the form of a triangle. It is named for its similarity in shape to the Greek uppercase letter delta (letter), delta (Δ). Although long studied, the delta wing did not find significant practical applications unti ...

with a leading edge sweep of 57° (''T'' stood for ''treugolniy'', треугольный, delta wing).Green, William. "The Great Book of Fighters". 2001. MBI Publishing. Aside from the wings, the two aircraft shared the basic design as well as the Lyulka AL-7

turbojet The turbojet is an airbreathing jet engine which is typically used in aircraft. It consists of a gas turbine with a propelling nozzle. The gas turbine has an air inlet which includes inlet guide vanes, a compressor, a combustion chamber, and ...

engine. Since the T-3 was intended to be an interceptor, it was fitted with the ''Almaz'' (Алмаз, Diamond)

radar Radar is a system that uses radio waves to determine the distance ('' ranging''), direction ( azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method used to detect and track ...

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. 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 The Sukhoi Su-9 (Air Standardization Coordinating Committee, ASCC reporting name: Fishpot) is a single-engine, all-weather, missile-armed interceptor aircraft developed by the Soviet Union. Development The Su-9 emerged from aerodynamic studie ...

, forming the backbone of the PVO during the 1960s.

Development

Specifications (T-3)

See also

References

Further reading