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Sikorsky S-5 : ウィキペディア英語版 | Sikorsky S-5
The Sikorsky S-5 was an early design by Igor Sikorsky, completed in late April 1911, with a Argus water-cooled engine. The S-5 was tested in a series of 20 to 30-second straight-line flights, over a period of three weeks, before the designer was able to make what he called his first real flight of four minutes, in a circuit of the field, on 17 May 1911. After outperforming Russian Army aircraft during manoeuvres watched by Czar Nicholas II, the S-5 earned Igor Sikorsky his first income with a series of exhibition flights during a country fair at Belaya Tzerkov, near Kiev. Between nine and ten flying hours were logged before the S-5 was lost through an engine failure. ==Specifications==
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「Sikorsky S-5」の詳細全文を読む
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