The Vought-Sikorsky VS-300, an American single-engine helicopter, was designed by Igor Sikorsky. Its original design featured a single three-blade rotor that was powered by a 75 horsepower (56 kW) engine. On May 13, 1940, the VS-300 completed its inaugural “free” flight. Recognized as the inaugural American single main rotor helicopter, it lifted to a height […]
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