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Pescara Biplane Helicopter



In 1919 the Marquis Raul Pateras de Pescara began trials with a series of helicopters lead-ing to his 1924 biplane helicopter which had 16 rotorblades mounted co-axially with both cyclic and collective pitch control. He flew it in France rather than his native Argentina, succeeding in directing its flight at a speed around 8 kph (13 mph) and 700 yards, making auto-rotative descents with the blades free-wheeling.


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