![]() The aircraft had a large wing, clipped, with two separate podded engines and a twin tail. 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. 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. 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 aerodynamic design for the new aircraft was largely carried out by TsAGI in collaboration with the Sukhoi design bureau. 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. "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"). The Soviet leadership soon realized that the new American fighter would represent a serious technological advantage over existing Soviet fighters. Air Force's "F-X" program, which resulted in the F-15 Eagle. ![]() In 1969, the Soviet Union learned of the U.S. ( March 2009) ( Learn how and when to remove this template message) Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources in this section. This section needs additional citations for verification. The Shenyang J-11 is a Chinese license-built version of the Su-27. Further versions include the side-by-side two-seat Su-34 strike/fighter-bomber variant, and the Su-35 improved air superiority and multi-role fighter. The Su-27 was developed into a family of aircraft these include the Su-30, a two-seat, dual-role fighter for all-weather, air-to-air and air-to-surface deep interdiction missions, and the Su-33, a naval fleet defense interceptor for use from aircraft carriers. The primary role was long range air defence against American SAC Rockwell B-1B Lancer and Boeing B-52G and H Stratofortress bombers, protecting the Soviet coast from aircraft carriers and flying long range fighter escort for Soviet heavy bombers such as the Tupolev Tu-95, Tupolev Tu-22M and Tupolev Tu-160. ![]() ![]() The Su-27 entered service with the Soviet Air Forces in 1985. It was designed with the Mikoyan MiG-29 as its complement. The Su-27 was designed for air superiority missions, and subsequent variants are able to perform almost all aerial warfare operations. It was intended as a direct competitor for the large US fourth-generation jet fighters such as the Grumman F-14 Tomcat and McDonnell Douglas F-15 Eagle, with 3,530-kilometre (1,910 nmi) range, heavy aircraft ordnance, sophisticated avionics and high maneuverability. The Sukhoi Su-27 ( Russian: Сухой Су-27 NATO reporting name: Flanker) is a Soviet-origin twin-engine supermaneuverable fighter aircraft designed by Sukhoi. ![]()
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