| 词条 | Froebe helicopter |
| 释义 |
The Froebe Helicopter was the first helicopter to be built and flown in Canada.[1] It was built by brothers Doug, Theodore and Nicholas Froebe in the 1930s. The machine was constructed on a custom-made steel tubular frame using spare parts and equipment from automobiles, farm machinery and elsewhere. Fitted with a de Havilland Gipsy aero engine, it had twin concentric contra-rotating rotors of stainless steel tubing with fabric covering and with full cyclic and collective pitch control.[2][3] The 98 hp available from the engine proved inadequate, but several test flights were made, the machine showing severe vibration. Work was then interrupted by the outbreak of the Second World War. The helicopter was stored in a granary and forgotten. A later generation of the Froebe family rediscovered it and donated it to the Royal Aviation Museum of Western Canada. Specifications
References1. ^{{cite journal |last1=Render |first1=Shirley |date=15 November 2007 |title=World's Second Helicopter Built in Manitoba in 1937-38 |journal=Helicopters Magazine |url=https://www.helicoptersmagazine.com/news/worlds-second-helicopter-built-in-manitoba-in-1937-38-526}} {{aviation-stub}}2. ^{{cite web |url=http://www.royalaviationmuseum.com/992/froebe-helicopter/ |title=Froebe Helicopter: Before Sikorksy came the Froebe Brothers |publisher=Royal Aviation Museum of Western Canada}} 3. ^{{cite web |url=http://www.cahs.ca/canadas-rotary-wing-heritage |title=Canada' Rotary Wing Heritage |author=Bill Zuk |publisher=Canadian Aviation Historical Society |date=31 January 2013}} 7 : Canadian inventions|Aviation history of Canada|Aviation in Manitoba|Canadian experimental aircraft|Canadian helicopters|Helicopters 1930–1939|Individual aircraft |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。