At that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation.
Igor SikorskyIf you are in trouble anywhere in the world, an airplane can fly over and drop flowers, but a helicopter can land and save your life.
Igor SikorskyIt would be right to state that, with the successful flight of the XR-4 in the summer of 1942, the helicopter became a reality in the United States.
Igor Sikorsky