Juan de la Cierva
Spanish aeronautical engineer
Died when: 41 years 79 days (494 months)Star Sign: Libra
Juan de la Cierva y Codorníu, 1st Count of la Cierva (Spanish pronunciation: ['xwan de la '?je?ßa i koðo?'ni.u]; 21 September 1895 in Murcia, Spain – 9 December 1936 in Croydon, United Kingdom) was a Spanish civil engineer, pilot and a self taught aeronautical engineer.
His most famous accomplishment was the invention in 1920 of a rotorcraft called 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.
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