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Sikorsky R-6 : ウィキペディア英語版 | Sikorsky R-6
The Sikorsky R-6 was an American-built light two-seat helicopter of the 1940s. In Royal Air Force and Royal Navy service, it was named the Hoverfly II. ==Development==
The R-6 Hoverfly II was developed to improve on the successful Sikorsky R-4. In order to enhance performance a completely new streamlined fuselage was designed and the boom carrying the tail rotor was lengthened and straightened. The main rotor and transmission system of the R-4 was retained.〔Swanborough, 1963, p.529〕 Sikorsky allotted their Model 49 designation to the new design. Later, dynamically balanced modifications to the rotor were carried out by Doman Helicopters Inc. The new aircraft could attain 100 mph compared with 82 mph by the earlier design. Initial production was by Sikorsky, but most examples were built by Nash-Kelvinator. Some of the later aircraft were fitted with more powerful engines.
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 R-6」の詳細全文を読む
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