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British Salmson aero-engines refers to a series of small French designed, air-cooled radial aero engine that were produced by British Salmson, under license from Société des Moteurs Salmson, in Great Britain during the late 1920s and 1930s. Because the relatively low power was divided among several cylinders, the running of the engines was particularly smooth, and the torque was very even.〔(Salmson ) in ''Flight'' magazine, April 4, 1930]〕 Adding to the smooth running of these engines was the use of the Canton-Unne system of planetary gears in a cage connecting pistons to crank-pin. ==Variants== ;AD.3:Three cylinder license production of the Salmson 3 Ad ;AC.7: seven cylinder radial, capacity ;AC.9: nine cylinder radial, capacity ;AD.9: at 2000 rpm (normal power) or at 2200 rpm (maximum power).〔 Bore of 70 mm. ;AD.9R:, geared version of AD.9 with increased bore of 73 mm and increased compression ratio (6:1). ;AD.9NG:, increased bore and stroke. (100 x 140 mm, 10 L capacity). 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「British Salmson AD.9」の詳細全文を読む スポンサード リンク
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