Vought-Sikorsky VS-300: Historical Photos from the World’s First Successful Helicopter
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 …