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The Vickers Viscount was a medium-range airliner driven by four turboprop engines. The type was designed and manufactured in Britain from 1948 to 1963. ==Prototypes== ;Type 630 :First prototype, with short fuselage (74 ft 6 in (22.71 m), accommodating 32 passengers and powered by four 1,380 ehp (1,032 kW) Rolls-Royce Dart R.Da Mk 501 engines.〔Andrews and Morgan 1988, p. 436.〕 ;Type 663 :Second prototype, testbed for Rolls-Royce Tay turbojet.〔 ;Type 640 :Planned third prototype, to be powered by four Napier Naiad turboprops. Not built, with parts incorporated in Type 700 prototype.〔 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「Vickers Viscount variants」の詳細全文を読む スポンサード リンク
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