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F-100D Super Sabre : ウィキペディア英語版
North American F-100 Super Sabre


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The North American F-100 Super Sabre was an American supersonic jet fighter aircraft that served with the United States Air Force (USAF) from 1954 to 1971 and with the Air National Guard (ANG) until 1979. The first of the Century Series of USAF jet fighters, it was the first USAF fighter capable of supersonic speed in level flight. The F-100 was originally designed by North American Aviation as a higher performance follow-on to the F-86 Sabre air superiority fighter.〔("F-100: Designed originally to destroy enemy aircraft in aerial combat." ) ''FAS.org.'' Retrieved: 12 September 2012.〕
Adapted as a fighter bomber, the F-100 was supplanted by the Mach two class F-105 Thunderchief for strike missions over North Vietnam. The F-100 flew extensively over South Vietnam as the air force's primary close air support jet until being replaced by the more efficient subsonic LTV A-7 Corsair II.〔(Global Security A-7 ): "The aging low-payload F-100 was the Air Force's primary air-to-ground CAS airplane at the time."〕 The F-100 also served in other NATO air forces and with other U.S. allies. In its later life, it was often referred to as the ''Hun'', a shortened version of "one hundred".〔("F-100 History." ) ''Boeing Co.'' Retrieved: 12 April 2011.〕
==Design and development==

In January 1951, North American Aviation delivered an unsolicited proposal for a supersonic day fighter to the United States Air Force. Named ''Sabre 45'' because of its 45° wing sweep, it represented an evolution of the F-86 Sabre. The mockup was inspected on 7 July 1951, and after over a hundred modifications, the new aircraft was accepted as the F-100 on 30 November 1951. Extensive use of titanium throughout the aircraft was notable.〔("Production Fighter Tops Speed of Sound." ) ''Popular Mechanics'', December 1953, p. 81.〕 On 3 January 1952, the USAF ordered two prototypes followed by 23 F-100As in February and an additional 250 F-100As in August.
The YF-100A first flew on 25 May 1953, seven months ahead of schedule. It reached Mach 1.05 in spite of being fitted with a de-rated XJ57-P-7 engine. The second prototype flew on 14 October 1953, followed by the first production F-100A on 9 October 1953. The USAF operational evaluation from November 1953 to December 1955, found the new fighter to have superior performance but declared it not ready for widescale deployment due to various deficiencies in the design. These findings were subsequently confirmed during "Project Hot Rod" operational suitability tests. Particularly troubling was the yaw instability in certain regimes of flight which produced inertia coupling. The aircraft could develop a sudden yaw and roll which would happen too fast for the pilot to correct and would quickly overstress the aircraft structure to disintegration. It was under these conditions that North American's chief test pilot, George Welch, was killed while dive testing an early-production F-100A on 12 October 1954. Another control problem stemmed from handling characteristics of the swept wing at high angles of attack. As the aircraft approached stall speeds, loss of lift on the tips of the wings caused a violent pitch-up. This particular phenomenon (which could easily be fatal at low altitude where there was insufficient time to recover) became known as the "Sabre dance".
Nevertheless, delays in the Republic F-84F Thunderstreak program pushed the Tactical Air Command to order the raw F-100A into service. Tactical Air Command also requested that future F-100s be fighter-bombers, with the capability of delivering nuclear bombs.
The North American F-107 was a follow-on Mach 2 development of the F-100 with the air intake moved above and behind the cockpit. It was not produced in quantity in favor of the Republic F-105 Thunderchief.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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