| 翻訳と辞書 |
Kaman K-225
The Kaman K-225 was an experimental helicopter developed by Kaman Aircraft. One was modified to become the world's first gas turbine-powered helicopter.
==Design and development==
The K-125 was Charles Kaman's first helicopter, which utilized intermeshing rotors and Kaman's patented servo-flap stability control.〔"Hall of Fame/Inventor Profile: Charles Kaman"〕 The K-125 first flew on 15 January 1947.
The K-190 and K-225 were an improved versions of the K-125, which first flew in April and July 1949 respectively. The U.S. Navy bought two and the Coast Guard one for $25,000 each. The United States Air Force evaluated one K-225 with the designation YH-22.
A modified K-225 equipped with a Boeing 502 (YT50) turboshaft engine became the world's first gas turbine- powered helicopter in December 1951.〔(Boeing Model 502 Gas Turbine Engine )〕 This aircraft is now at the Smithsonian Institution in Washington, D.C.
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「Kaman K-225」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|