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 />
1954-1957 McDonnell XV-1: McDonnell, USA<br />
• 9.4-meter-diameter three-bladed rotor driven by blade tip jets (air/fuel mixture),<br />
operating as an autogyro in forward flight<br />
• Two-bladed pusher propeller located behind the fuselage<br />
• Two small tail rotors which ensure yaw control at low speed<br />
• 550 hp (405 kW) R-975-19 Continental piston engine driving the pusher propeller<br />
and two compressors which supply compressed air to the blades<br />
• Maximum weight: 2,180 kg<br />
• Maiden flight on July 14, 1954<br />
• First rotary wing aircraft to reach 200 mph (173 kt) on October 10, 1956
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