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Who invented Helicopter?

A. Igor Sikorsky
B. Wright brothers
C. Rudolf Diesel
D. Kepler

Answer & Solution
Option: A
Explanation :While the Sikorsky name is forever linked to helicopters, Igor Sikorsky (1889-1972) was a versatile aviation designer and developer whose 50-year career included pioneering work on fixed wing aircraft and flying boats, all before returning to his first love, helicopters, and creating the first practical one.
By 1939, Sikorsky’s VS-300 was ready to make its first flight. “It was the first practical, workable helicopter that could do everything it was supposed to do, fly, hover and deal with all the different aspects that people were trying to solve with torque and lift,” Cochrane says.
The VS-300 became the model for all modern single-rotor helicopters, and in 1941, Sikorsky Aircraft got its first contract from the U.S. Army Air Corps for an observation helicopter that became known for life-saving missions in military and civil emergencies.
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