1930 Juan De La Cierva is Honored By President Hoover For the Invention of the Autogyro
Pilot Juan de la Cierva disembarks autogyro and demonstrates his flight over the ...HD Stock Footage
Cierva C-8L first autogyro crossing the Channel (1928)
Juan de la Cierva y Codorníu, 1st Count of De La Cierva was a Spanish civil engineer, pilot and aeronautical engineer. His most famous accomplishment was the invention in 1920 of the Autogiro, a single-rotor type of aircraft that came to be called autogyro in the English language. In 1923, after four years of experimentation, De la Cierva developed the articulated rotor, which resulted in the world's first successful flight of a stable rotary-wing aircraft, with his C.4 prototype.