In which year did Igor Sikorsky design the Vought-Sikorsky VS-300?
1937
1938
1939
1940
Answer
Igor Sikorsky designed the Vought-Sikorsky VS-300 in 1939. This helicopter was the first viable American helicopter and pioneered the rotor configuration used by most helicopters today.
Soaring with Sikorsky: Test Your Knowledge of the Aviation Pioneer's Legacy