Juan de la Cierva was a Spanish aeronautical engineer and pilot. His most famous accomplishment was the invention of the autogyro in 1923. The autogyro is a highly maneuverable aircraft with an unpowered rotor. It was a predecessor to the modern helicopter.
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... are 14,078 people, 4,578 households, and 3,731 families residing in the town. The population density is 1,322.5/km² (3,428.5/mi²). There are 4,661 housing units ...