Russia Fighter Jet - It is an outgrowth of the PAK FA (Russian: PAK FA, abbreviation: Perspektivnyi aviacioni kompleks frontovoi aviacije, Romanization: Perspektivnyi aviacioni kompleks Frontovoy Aviatsii, literally "Forward-looking aviation complex of front-line air forces") program and was launched in 1999 as a more A modern, more affordable alternative to MFI (Mikoyan project 1.44/1.42). Sukhoi's internal designation for the aircraft is T-50. The Su-57 was the first aircraft designed with stealth technology in service with the Russian military, and was intended to be the basis for a family of stealth fighters.
The Su-57 is a multirole fighter capable of air combat as well as land and sea attack, featuring stealth, supermaneuverability, supercruise, integrated avionics and a powerful internal payload capability.
Russia Fighter Jet
The aircraft is expected to succeed the MiG-29 and Su-27 in service in Russia and will also be used in the export market. The first prototype flew in 2010, but the program was set to undergo a lengthy development process due to various structural and technical issues that arose during testing, including the loss of the first production aircraft in a crash before delivery. After numerous delays, the first Su-57 entered service with the Russian Aerospace Forces (VKS).
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In 1979, the Soviet Union expressed the need for a new generation of combat aircraft for the 1990s. The program became I-90 (Russian: I-90, abbreviated: Истребитель 1990–х годов, literally "Fighters of the 1990s"), and called for fighters to have significant ground and thus be "multifunctional" (i.e. multipurpose ) attack capability and will eventually replace the MiG-29 and Su-27 in forward tactical aviation services. Two projects were subsequently devised to meet these requirements: the MFI (Russian: MFI, abbreviated: Многофункциональный фронтовой истребитель, lit. 'Multifunctional Frontline Fighter') and the smaller LFI (Russian: LFI, L abbreviated: Лёг.кий, lit Light' ), whose conceptual work began in 1983.
Although not a participant in the MFI, Sukhoi began its own next-generation fighter technology development program in 1983, culminating in the S-32 swept-wing test aircraft, later designated the S-37 and Su-47. Due to the lack of funds after the disintegration of the Soviet Union, MFI was repeatedly postponed, and the MiG 1.44/1.42 prototype did not make its first flight until 2000, nine years late.
Due to high costs, the MFI and LFI were eventually cancelled, and the Russian Ministry of Defense began work on a new next-generation fighter program; in 1999, the ministry launched the PAK FA or I-21 program, and in April 2001 the competition was announced.
Due to Russia's financial difficulties, the program aims to contain costs by producing a fifth-generation multirole fighter to replace the Su-27 and MiG-29. Further cost-saving measures include expected dimensions between the Su-27 and MiG-29, and a normal take-off weight significantly lower than the MiG MFI's 28.6 tons (63,000 lb) and the Su-47's 26.8 tons (59,000 lb).
Sukhoi Su 57
Sukhoi's approach to the PAK FA competition was quite different from Mikoyan's; although Mikoyan proposed that the three design bureaus (Mikoyan, Sukhoi and Yakovlev) work as a consortium with the winning team leading the design, But Sukhoi has assumed the role of lead designer from the start, and included a joint work contract covering the development and production cycle, from propulsion and avionics suppliers to research facilities. In addition, the two companies have different design philosophies for the aircraft. Mikoyan's E-721 was smaller and more affordable, with a normal takeoff weight of 16-17 tons (35,000-37,000 lb), powered by a pair of Klimov VK-10M engines, 10-11 tons (98.1-108 kN) , 22,000 – 24, 300 lbf each) of thrust. In comparison, the Sukhoi T-50 is relatively larger and more capable, with a normal takeoff weight of 22-23 tons (49,000-51,000 lbs) and powered by a pair of Lyulka-Saturn AL-41F1 engines, each Equipped with a maximum thrust of 14.5 tons (142 kN, 32,000 lbf).
In April 2002, the Ministry of Defense chose Sukhoi over Mikoyan as the winner of the PAK FA competition and the main design bureau for the new aircraft.
In addition to the strengths of the proposal, Sukhoi's experience in the successful development of various Su-27 derivatives and a large number of exports ensuring its financial stability starting in the 1990s was also taken into account.
Mikoyan continued to use his own funds to develop his E-721 as LMFS (Russian: LMFS, abbreviation: Легкий многофункциональный фронтовой самолёт, literally "Light Multifunctional Frontal Aircraft").
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The development project of PAK FA is called Stolica (Russian: Stolica, literally "capital"). In 2002, Aleksandar Davidko was selected as the chief designer of the Sukhoi T-50.
The Novosibirsk Aircraft Production Association (NAPO) and the Komsomolsk-on-Amur Aircraft Production Association (KnAAZ) will produce the new multirole fighter, with KnAAZ performing final assembly in Komsomolsk-on-Amur.
Following a competition held in 2003, Tehnokompleks Science and Production Center, Ramskoye Instrumt Architectural Project Bureau, Tikhomirov Scientific Research Institute of Instrument Design (NIIP), Ural Opto-Mechanical Corporation (UOMZ) in Yekaterinburg, Nizhny Novgorod The company and Ctral Scientific The Moscow Institute of Research Radio Engineering were selected to develop the PAK FA avionics package. In April 2004, NPO Lyulka-Saturn (now NPO Saturn) was contracted as the contractor for the AL-41F1 engine, which was developed under the code name Izdeliye 117.
Sukhoi used the existing airframe as a proving ground for various subsystems and concepts; the Su-47 tested the internal weapons bay, and the Su-27M prototype served as a proving ground for the flight control system and engines.
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In order to reduce development risks and share related costs, and narrow the gap with the existing fourth-generation fighter, Sukhoi called T-10BM in Su-27 (Russian: BM, abbreviated from: большая моделизания, literally means "great modernization"), which was eventually acquired by the Russian Ministry of Defense in 2009 and entered service as the Su-35S in 2014.
In December 2004, the T-50 preliminary design design was completed and approved by the Ministry of Defense; state funding for the program began in 2005 and increased substantially in 2006 when the detailed design was carried out.
On August 8, 2007, Russian news agencies quoted Air Force Commander-in-Chief Alexander Zelin as saying that the development phase of the program had been completed and that construction would begin on the first aircraft for flight testing, with plans to build three by 2009 A T-50 prototype in flight.
From the early stages of the PAK FA program, Russia sought foreign partnerships on the project to increase its development funding and secure large export orders.
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On 18 October 2007, Russia and India signed an agreement for Sukhoi and Hindustan Aeronautics Limited (HAL) to jointly develop a derivative of the PAK FA, known as the fifth generation fighter jet (FGFA).
In September 2010, India and Russia reached a preliminary project agreement, with an investment of US$6 billion between the two parties; in December 2010, a memorandum of understanding on conceptual design was signed, and the development of FGFA is expected to take 8-10 years.
However, by 2014, the IAF began to express concerns about performance, cost and workload. India finally pulled out of the partnership in 2018.
Flights of the T-50 auxiliary aircraft have been repeatedly delayed since early 2007 after encountering unspecified technical problems. In August 2009, Aleksandar Zelin admitted that problems with the engine and technical research remained unresolved.
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On 28 February 2009, Sukhoi CEO Mihail Pogosyan announced that the airframe was almost complete and the first prototype should be ready by August 2009.
On August 20, 2009, Pogosyan stated that the first flight would take place in d. Konstantin Makiko, deputy director of the Moscow Center for Strategy and Technology Analysis, said the "delay" of the plane could make its maiden flight in January or February, adding that commercial production would take five to t years.
Flight tests were further delayed when Deputy Prime Minister Sergei Ivanov announced in December 2009 that the first tests would begin in 2010.
On December 24, 2009, the first taxiing test was successfully completed, and on January 29, 2010, the first prototype of T-50-1 completed the auxiliary flight.
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At Dzhemgi KnAAPO airport in the Russian Far East, the Maid flew for 47 minutes, piloted by Sukhoi test pilot Sergej Bogdan.
Prototypes will be built more slowly than originally planned; by October 2013, the test program had accumulated more than 450 flights of five aircraft.
In total, t flying and three non-flying T-50 prototypes will be built for initial flight testing and government trials.
Initially, the program planned to have as many as six prototypes before serial production began; however, tests showed that the initial prototypes did not have sufficient service life, with early structural cracks developing in the fuselage.
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The aircraft was subsequently structurally redesigned, with changes including increased use of composite materials, a strengthened fuselage to meet life-cycle requirements, a longer tail "spin" and a slightly longer wingspan; the sixth flying prototype was redesigned The first of the "Phase 2" aircraft designed, the initial five prototypes are considered "Phase 1" vehicles and will require additional structural reinforcement to continue flight testing.
The last two flying prototypes were test products of the Su-57 aircraft with full mission systems onboard.
While "Phase II" reduced the weight gain required for strength through structural redesign
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