Tag: America’s first helicopter
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75 years of modern helicopter flight
On September 14, 1939, Russian American aviation pioneer Igor Sikorsky lifted off in his tethered VS-300 helicopter, beginning a flight test program that proved the efficiency and controllability of the single rotor design. Sikorsky Aircraft marked 75 years of modern helicopter flight that began September 14, 1939, when 50-year-old chief designer and chief test pilot…