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Edward Purkis Frost (1842 – 1922) was an English pioneer of aviation. He built ornithopters and became president of the Aeronautical Society. E.P. Frost lived at West Wratting Hall in Cambridgeshire and became a Justice of the Peace.〔Kelly, Maurice. 2006. ''Steam in the Air''. Pen & Sword Books. Pages 49-55 are about Frost.〕 Frost began studying flight in 1868 and built a large steam-powered flying machine with both fixed and flapping wings from 1870 to 1877. Frost had intended to have a 20-25 hp steam engine but the actual engine with 5 hp was not powerful enough to lift the ornithopter from the ground. The experiment cost Frost £1000. In collaboration with several colleagues he started another large similar craft in 1902 with an internal combustion engine. It lifted from the ground in 1904.〔 A wing from this craft is displayed in London's Science Museum. Frost had been a member of the Aeronautical Society since 1875 and became its president from 1908 to 1911.〔(Society Worthies.... ) ''Flight International'', 13 January 1966. At flightglobal.com archive. Includes photos of E.P. Frost.〕 == References == 〔 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「Edward Purkis Frost」の詳細全文を読む スポンサード リンク
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