![]() To reduce the PAK FA’s developmental risk and spread out associated costs, as well as to bridge the gap between it and older previous generation fighters, some of its technology and features, such as propulsion and avionics, were implemented in the Sukhoi Su-35S fighter, an advanced variant of the Su-27. In 2002, Sukhoi was selected over Mikoyan as the winner of the PAK FA competition and would lead the design of the new aircraft Mikoyan continued to develop its proposal as the LMFS “Light Multifunctional Frontline Fighter” which was designed to be smaller and more affordable. The programme requirements reflected the capabilities of Western fighter aircraft, such as the Eurofighter Typhoon and F-22 Raptor. The MiG 1.44 was subsequently cancelled and a new programme for a next-generation fighter, PAK FA, was initiated. Due to a lack of funds after the collapse of the Soviet Union, the MiG 1.44 programme was repeatedly delayed and the first flight of the prototype did not occur until 2000, nine years behind schedule. Though not a participant in the MFI, Sukhoi started its own programme in 1983 to develop technologies for a next-generation fighter aircraft, resulting in the S-37, later designated Su-47. The subsequent programme designed to meet these requirements, the MFI “Multifunctional Frontline Fighter”, resulted in Mikoyan’s selection to develop the MiG 1.44. The project was designated the I-90 “Fighter” and required the fighter to have substantial ground attack capabilities and would eventually replace the MiG-29s and Su-27s in frontline tactical aviation service. In 1979, the Soviet Union outlined a need for a next-generation aircraft intended to enter service in the 1990s. Its first flight took place on 29th January 2010. The aircraft is expected to have a service life of up to 35 years. The Su-57 is intended to succeed the MiG-29 and Su-27 in the Russian Air Force. The prototypes and initial production batch are to be delivered with a highly upgraded variant of the Lyulka AL-31 engine used by the Su-27 family as interim powerplant while an advanced clean-sheet design engine, the Saturn izdeliye 30, is currently under development. The fighter is designed to have supercruise, supermaneuverability, stealth, and advanced avionics to overcome the prior generation fighter aircraft as well as ground and naval defences. The Su-57 will be the first aircraft in Russian military service to use stealth technology. Sukhoi’s internal name for the aircraft is T-50. The aircraft is the product of the PAK FA “Prospective Aviation Complex of Frontline Aviation”, a fifth-generation fighter programme of the Russian Air Force. But despite of these problems, cancellation is rather unlikely, as Russia is India's main partner regarding military equipment.The Sukhoi Su-57 is the designation for a stealth, single-seat, twin-engine multirole fifth-generation jet fighter being developed for air superiority and attack operations. For example, its stealth capabilities and engines have been described to be "far from adequate". With India playing a big part in the financing of the PAK FA program, some concerns have been expressed over the program's recent progress. According to Sukhoi, its frontal cross section is about 0.1-1 m².# However it falls short in stealth between its American counterparts, especially at the sides and rear fuselage, with one big problem being its engine blades, which are not hidden. The key features of the PAK-FAs Stealth features are the faceted design on the intakes and paralleled edges to scatter radar waves rather than reflecting them. The PAK-FA is also the first Russian aircraft with real stealth capabilities. In fact, other than the PAK-FA, only very few fighers like the F-22 Raptor are able to take-off only by accelerating and without pitching up. When looking on the video of the PAK-FA´s first flight it can be seen that the PAK-FA absolved takeoff without using its horizontal stabilizators, meaning that it gained altitude only by the high amount of lift generated by the airframe. Several aspects indicate the strength of the T-50 aerodynamics: ![]() It will also feature an advanced IRST (Infrared search and Track) sensor. Additionally, it will have two L-band (Very High Frequency VHF) radars on the wing tip sections and a small second X-band on its tail, providing 360 degree radar coverage. The main radar is based on the Irbis-E PESA of the Su-35 and is specified N036 Byelka. ![]() It is expected that the PAK-FA will be equipped a with a 1500 T/R module AESA radar with two side-looking AESAs, with 358 T/R modules. The Sukhoi PAK-FA was developed to replace the Sukhoi Su-27 Flanker and MiG-29 Fulcrum 4th Gen Fighters of the Russian Air Force. ![]()
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