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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Bristol Bullfinch ： ウィキペディア英語版 Bristol Bullfinch The Bristol Bullfinch was an experimental British military aircraft first flown in 1922. Variants were built as both parasol wing monoplanes and biplanes, but both versions proved unsuccessful, and only the three prototypes were built. ==Development== The Bullfinch was designed by Frank Barnwell, chief designer of the Bristol Aeroplane Company, as a parasol-wing monoplane single-seat fighter, which was convertible to a two-seat biplane, thus meeting the requirements of the Royal Air Force for both a single-seat interceptor fighter and a two-seat reconnaissance-fighter. The potential cost savings associated with this concept, which was planned to be powered by the Jupiter engine, the rights to which Bristol had just acquired from the bankrupt Cosmos Engineering, interested the Air Ministry, who wrote a specification (Specification 2/21) around Barnwell's proposed design, and ordered three prototypes in June 1921. The Bullfinch monoplane, or Type 52 Bullfinch Mk I, was a cantilever parasol monoplane with a welded steel tube fuselage. The wing was in two halves, joined at the aircraft centreline, with each half tapering from maximum thickness at half span to both the wing root and tips. The wing was wooden in the prototypes, but was planned to be of metal construction for any subsequent production aircraft. To produce the two-seat fighter-reconnaissance version, the Type 53 Bullfinch Mk II, an extra fuselage bay was added aft of the pilot containing a cockpit for the observer, and a cantilever bottom wing attached which compensated for the shift in centre of gravity resulting from the weight of the observer and the lengthened fuselage. The first prototype, a Type 52 monoplane, flew on 6 November 1922, with the second prototype, also a monoplane, flying in May 1923.〔 After first flying as a monoplane, the third prototype was converted to the biplane configuration, flying in that configuration on 17 March 1924. While the single-seater demonstrated reasonable performance, the two-seater was overweight, and proved incapable of carrying the required military load.〔 No further production occurred. 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「Bristol Bullfinch」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.