This machine was a failure to the extent that it could not fly. In other respects it was a very important and necessary stepping stone.

It 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.

If a man is in need of rescue, an airplane can come in and throw flowers on him, and that's just about all. But a direct lift aircraft could come in and save his life.

It would be right to say that the helicopter's role in saving lives represents one of the most glorious pages in the history of human flight.

Aeronautics was neither an industry nor a science. It was a miracle.

According to recognized aero technical tests, the bumblebee cannot fly because of the shape and weight of his body in relation to the total wing area. The bumblebee doesn't know this, so he goes ahead and flies anyway.

It is like a dream to feel the machine lift you gently up in the air, float smoothly over one spot.