Helicopter

A helicopter is an aircraft that achieves lift through a large overhead propeller, allowing it to lift off vertically without requiring forward motion. The first successful helicopter flight was achieved in 1939, marking a breakthrough in aviation.
 Igor Ivan Sikorsky United States 1939 Helicopter

A helicopter is an aircraft that achieves lift through a large overhead propeller, allowing it to lift off vertically without requiring forward motion. The first successful helicopter flight was achieved in 1939, marking a breakthrough in aviation.