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The Le Rhône 9J is a nine-cylinder rotary aircraft engine produced in France by Gnome et Rhône. Also known as the Le Rhône 110 hp in a reference to its nominal power rating, the engine was fitted to a number of military aircraft types of the First World War. Le Rhône 9J engines were produced under license in Great Britain by W.H. Allen Son & Company of Bedford, and in Germany by Motorenfabrik Oberursel.〔Lumsden 2003, p. 161.〕 In common with other Le Rhône series engines, the 9J featured highly visible copper induction pipes and used a single push-pull rod to operate its two overhead valves.〔Gunston 1989, p. 93.〕 The main visual difference between the 9J and the earlier, less powerful Le Rhône 9C engine is that the copper intake manifold tubing (with round section lower ends) on the 110 hp 9J is attached to the crankcase behind the cylinders, whereas on the 9C (80 hp) the intake manifolds (with rectangular lower ends) are fully visible from the front. The engine was manufactured under license in Germany by Motorenfabrik Oberursel and sold as the Oberursel UR.II. Examples of Le Rhône 9J engines are on public display in aviation museums, with several remaining airworthy, powering both restored vintage aircraft and authentic reproductions of such aircraft. ==Variants== ;Le Rhône 9Ja :(1916) 110 hp (82 kW), nine-cylinder rotary engine. 953 built by W.H. Allen Son & Co. ;Le Rhône 9Jb :(1916) 130 hp (97 kW), nine-cylinder rotary engine. ;Le Rhône 9Jby :(1916) 130 hp (97 kW), nine-cylinder rotary engine. 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「Le Rhône 9J」の詳細全文を読む スポンサード リンク
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