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__NOTOC__ The de Havilland DH.92 Dolphin was a 1930s British prototype light biplane airliner designed and built by de Havilland aircraft company.〔Jackson 1978, p.385-7〕〔Jackson 1973, p 382〕 ==Design and development== The Dolphin was designed as a modernised version of the de Havilland Dragon Rapide, incorporating ideas from the company's DH 86A and de Havilland Dragonfly but using new main assembly designs. It had〔 a DH 86A style nose to accommodate two crew side-by-side and increased span wings of unequal span, Dragonfly-like. It first appeared with the trousered undercarriage of these earlier biplane transports, but a retractable landing gear, rather like that of the DH.88 Comet was fitted before flight. Onboard air-stairs were one of the passenger access novelties.〔Hayes 2003 p.152〕 It was powered by two 204 hp (152 kW) de Havilland Gipsy Six piston engines. Fuel tanks were in the wings, as in the Dragonfly, to avoid the fire hazard〔Hayes 2003 p.178〕 of the Rapide's engine nacelle tanks. One prototype was built and first flown 9 September 1936. Geoffrey de Havilland's log shows〔Jackson 1978, p.386〕 he flew it only once more. No others were built as it proved to be too heavy structurally and the prototype was scrapped in December 1936.〔Jackson 1978, p.387〕 In an edition of Flight magazine September 10, 1936 the decision to discontinue the type was published as follows: 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「De Havilland Dolphin」の詳細全文を読む スポンサード リンク
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