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The Russian manufacturer Sukhoi stood out in recent times in the development of fighter aircraft, high performance, overshadowing even the already legendary Migs. Technological resources, such as vectored thrust, for example, make it highly maneuverable aircraft in close combat, without neglecting, entretando, their ability BVR (Beyond Visual Range - Beyond visual range). The latest development from Sukhoi, however, fighter jet not yet in mass production, the Su-47 Berkut (Russian: Беркут - Golden Eagle). This fascinating aircraft's project was begun in 1983 but had its government funding cut by the collapse of the Soviet regime in 1989/1990. The Sukhoi continued the project with its own funds, and built just a prototype. The Berkut first flew on September 25, 1997, more as a technology demonstrator than as operational military aircraft. The aircraft uses very advanced aerodynamic solutions: their wings have negative enflechamento. This configuration allows a fantastic fighter jet maneuverability, but has characteristics of high instability, unacceptable and dangerous in an aircraft with conventional flight controls. The solution was found in the command FBW (Fly-by-wire - commands for electrical / electronic cables), operated by joysticks type side-stick. Thus, the computers of flight controls correct any instability to safe levels and allow the aircraft maneuvers almost impossible for any aircraft more conventional configuration. The wing back negative fighter jet enflechamento several aerodynamic advantages for the aircraft: High ratio support / drag, which means high aerodynamic efficiency, High capacity maneuverability in close combat (dogfight); Large range of subsonic speed; Low suscebitibilidade the stalls and accidental screws , Increased stability at large angles of attack; Low stall speed, ability to take off and land on short runways. fighter jet The Berkut also has an innovative structure: 90 percent of the wing structure is made of composites. Although most of the fuselage is metallic, in aluminum alloys and titanium, 13 percent of it is made of composites. The aircraft proved to have a "signature" of very low radar difficult to detect. This is due to its format, its structure and its ability to carry weapons fighter jet inside the structure. The Sukhoi Su-47 Berkut was equipped with two engines Lyulka al37-FU vectored thrust. Each develops a thrust of 83.4 kN (18,750 lbf) in "dry power" (without afterburners) and 142.2 kN (31,970 lbf) with the after burner (afterburner). The airplane performance is superior to many operational combat aircraft today: it can reach Mach 2 at altitude (operationally, 1.6 Mach) and Mach 1.14 at sea level. Your reason for initial climb is 46,200 feet per minute, and range in combat is 3,300 Km The maximum takeoff weight is 34 tonnes. However, the future of the Berkut is uncertain. As it was not adopted by the Russian Air Force, their export possibilities are greatly reduced due to lack of data from operational fighter jet experience, and competitor Mikoyan-Gurevich (MiG) is developing a fifth generation fighter, which can put the Berkut in check.
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