|
The Fairchild T-46 (nicknamed the "Eaglet") was an American light jet trainer aircraft of the 1980s. It was cancelled in 1986 with only three aircraft being produced. ==Design and development== The United States Air Force (USAF) launched its Next Generation Trainer (NGT) program to replace the Cessna T-37 Tweet primary trainer in 1981.〔Braybrook 1985, p. 274.〕 Fairchild-Republic submitted a shoulder-winged monoplane with a twin-tail, powered by two Garrett F109 turbofans and with pilot and instructor sitting side-by-side.〔Braybrook 1985, p. 275.〕 In order to validate the proposed aircraft's design, and to explore its flight handling characteristics, Fairchild Republic contracted with Ames Industries of Bohemia, New York to build a flyable 62% scale version. Burt Rutan's Rutan Aircraft Factory (RAF) in Mojave, California was contracted to perform the flight test evaluations, with test pilot Dick Rutan doing the flying. The scale version was known at RAF as the Model 73 NGT, this flying on 10 September 1981.〔Braybrook 1985, pp. 275–276.〕 Fairchild's design, to be designated T-46, was announced winner of the NGT competition on July 2, 1982,〔 with the USAF placing an order for two prototypes and options for 54 production aircraft.〔''Flight International'' 17 July 1982, p. 122.〕 It was planned to build 650 T-46s for the USAF by 1991.〔Mormillo 1986, p. 650.〕 The aircraft first flew on October 15, 1985,〔''Flight International'' 26 October 1985, p. 8.〕 six months later than originally programed date of April 15. Costs had increased significantly during the development process, with the predicted unit cost rising from $1.5 million in 1982 to $3 million in February 1985.〔 The 1985 Gramm–Rudman–Hollings Balanced Budget Act mandated spending cuts for the US Government in an attempt to limit the national debt,〔 and while testing did not reveal any major problems,〔Mormillo 1986, pp. 651–652.〕 Secretary of the Air Force Russell A. Rourke cancelled procurement of the T-46, while allowing limited development to continue.〔 While attempts were made in Congress to reinstate the program, which resulted in the FY 1987 budget being delayed, an amendment was passed to the 1987 Appropriations Bill to forbid any spending on the T-46 until further evaluation of the T-46 against the T-37 and other trainers took place.〔''Flight International'' 8 November 1986, p. 9.〕 The project was cancelled a little more than a year later, for reasons that largely remain controversial. The T-46 was the last project of the Fairchild Republic Corporation, and after the program termination Fairchild had no more income. Without any new contracts and the NGT program cancelled, the company closed the Republic factory in Farmingdale, New York, bringing 60 years of Fairchild aircraft manufacturing to an end. The aircraft itself featured a side by side configuration, a twin (or "H") tail (similar to the company's A-10), ejection seats, pressurization, and two turbofan engines. Had it gone into full production the NGT program called for 650 aircraft being built up to 1992. There was potential for some overseas sales as well, such as in the light ground attack role in addition to its role as a trainer.〔Warwick 1985, p. 29.〕 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「Fairchild T-46」の詳細全文を読む スポンサード リンク
|