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The RAF 3 was a British liquid-cooled, V-12 engine developed for aircraft use during World War I. Based on the eight–cylinder RAF 1 it was designed by the Royal Aircraft Factory but produced by the two British companies of Armstrong Whitworth and Napier & Son. The RAF 7 was a high compression version of the same engine.〔Gunston, 1989, p. 156.〕 ==Variants== ;RAF 3 :1914 - Prototype engine, 200 horsepower (150 kW). ;RAF 3a :1914 - Main production variant, increased bore, 260 horsepower (194 kW). 29 built by Armstrong Whitworth, 260 built by Napier & Son. ;RAF 7 :300 horsepower (224 kW) high compression version with high-lift camshafts. 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「RAF 3」の詳細全文を読む スポンサード リンク
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