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The Sukhoi Su-27 ((ロシア語:Сухой Су-27)) (NATO reporting name: Flanker) is a twin-engine supermaneuverable fighter aircraft designed by Sukhoi. It was intended as a direct competitor for the large United States fourth-generation fighters such as the Grumman F-14 Tomcat and F-15 Eagle, with range, heavy aircraft ordnance, sophisticated avionics and high manoeuvrability. The Su-27 most often flies air supremacy missions, but its most modern variants are able to perform almost all aerial warfare operations. Complementing the smaller MiG-29, the Su-27 has its closest US counterpart in the F-15 Eagle. The Su-27 entered service with the Soviet Air Forces in 1985. The primary role was long range air defence against American SAC B-1B and B-52G/H bombers, protecting the Soviet coast from aircraft carriers and flying long range fighter escort for Soviet heavy bombers such as the Tu-95 "Bear", Tu-22M "Backfire" and Tu-160 "Blackjack". There are several related developments of the Su-27 design. The Su-30 is a two-seat, dual-role fighter for all-weather, air-to-air and air-to-surface deep interdiction missions. The Su-33 'Flanker-D' is a navy fleet defense interceptor for use on aircraft carriers. Further versions include the side-by-side 2-seat Su-34 'Fullback' strike variant and the Su-35 'Flanker-E' improved air defense fighter. == Development == In 1969, the Soviet Union learned of the U.S. Air Force's "F-X" program, which resulted in the F-15 Eagle. The Soviet leadership soon realized that the new American fighter would represent a serious technological advantage over existing Soviet fighters. What was needed was a better-balanced fighter with both good agility and sophisticated systems. In response, the Soviet General Staff issued a requirement for a ''Perspektivnyy Frontovoy Istrebitel'' (''PFI'', literally "Prospective Frontline Fighter", roughly "Advanced Frontline Fighter").〔Spick, Mike, ed. "MiG-29 'Fulcrum'". "The Flanker". ''Great Book of Modern Warplanes''. Osceola, WI: MBI Publishing, 2000. ISBN 0-7603-0893-4.〕 Specifications were extremely ambitious, calling for long range, good short-field performance (including the ability to use austere runways), excellent agility, Mach 2+ speed, and heavy armament. The aerodynamic design for the new aircraft was largely carried out by TsAGI in collaboration with the Sukhoi design bureau.〔 When the specification proved too challenging and costly for a single aircraft in the number needed, the PFI specification was split into two: the ''LPFI'' (''Lyogkyi PFI'', Lightweight PFI) and the ''TPFI'' (''Tyazholyi PFI'', Heavy PFI). The LPFI program resulted in the Mikoyan MiG-29, a relatively short-range tactical fighter, while the TPFI program was assigned to Sukhoi OKB, which eventually produced the Su-27 and its various derivatives. The Sukhoi design, which was altered progressively to reflect Soviet awareness of the F-15's specifications, emerged as the ''T-10'' (Sukhoi's 10th design), which first flew on 20 May 1977. The aircraft had a large wing, clipped, with two separate podded engines and a twin tail. The ‘tunnel’ between the two engines, as on the F-14 Tomcat, acts both as an additional lifting surface and hides armament from radar. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sukhoi Su-27」の詳細全文を読む スポンサード リンク
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