Spanish engineer Raul Pescara piloting his
Spanish engineer Raul Pescara piloting his co-axial rotor helicopter in 1922. It rose vertically and sustained hovering three feet above the ground in tests near Paris
Picture No
13122335
Media ID
45369404
Size
3000px x 2449px
(1.6MB)
Credit
Mary Evans / The Everett Collection
Source
Courtesy Everett Collection
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30-40 Aviators Firsts Flyers Helicopters Lcgr1802 Lcgr2018 Pescara Raul Reproduction
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