AIRXC_170220_187
Existing comment:
The First Successful American Helicopter: The Sikorsky VS-300A:
Igor Sikorsky was the most influential helicopter pioneer. His VS-300A became the first successful cyclically controlled, single-rotor helicopter when it flew on December 31, 1941. Sikorsky did not invent the helicopter, but he transformed it into functional forms, convinced the public and government of its value, and then mass-produced it.
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