Question : Who invented Helicopter?
Option 1: Nicolaus Copernicus
Option 2: Igor Sikorsky
Option 3: Kenneth Cockrell
Option 4: Drinker
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Correct Answer: Igor Sikorsky
Solution : The correct answer is Igor Sikorsky.
The VS-300, the world's initial workable helicopter, took flight on September 14, 1939, in Stratford, Connecticut. The helicopter, designed by Igor Sikorsky and manufactured by the Vought-Sikorsky Aircraft Division of the United Aircraft Corporation, was the first to use a single main rotor and tail rotor configuration.
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