1940 ? 2010: Brief history of hybrid helicopters around ... - Eurocopter
1940 ? 2010: Brief history of hybrid helicopters around ... - Eurocopter
1940 ? 2010: Brief history of hybrid helicopters around ... - Eurocopter
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All Rights Reserved American Helicopter Society Summer 2006 vertiflite<br />
1949 CGA -2a: Gyrodyne, Gyrodyne Company <strong>of</strong> America USA<br />
• First compound helicopter to fly in the USA<br />
• Two coaxial two-bladed rotors driven by a 450 hp Pratt & Whitney R-985 piston<br />
engine<br />
• Two pusher propellers each driven by a 100 hp Continental piston engine, and<br />
providing yaw control