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Piasecki PV-2 : ウィキペディア英語版 | Piasecki PV-2
The Piasecki PV-2 was a helicopter designed by Frank Piasecki. The PV-2 is best known for being the second successful helicopter flown in the United States. The PV-2 first flew on April 11, 1943.〔(National Aviation Hall of Fame - Frank Piasecki )〕 Developed as a technology demonstrator, the PV-2 brought several new features such as the first dynamically balanced rotor blades, a rigid tail rotor with a tension-torsion pitch change system, and a full cyclic and collective rotor pitch control.〔 The PV-2 is now on display at the National Air and Space Museum's Steven F. Udvar-Hazy Center ==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「Piasecki PV-2」の詳細全文を読む
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