Cierva Bomber

 

In 1919 Cierva produced a large three-engine bomber that, piloted by Captain Julio Rios Argiieso, crashed in its initial flight when the aircraft stalled. Pondering the crash, Cierva's brilliant insight was to see the wing differently - he reasoned that stall could be effectively eliminated if the wing itself moved independently of the aircraft. The rotor, a moving, stall-proof wing, was placed on top of a fuselage, and he patented the name" Autogiro".