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1 Cierva, Juan de la
SUBJECT AREA: Aerospace[br]b. 21 September 1895 Murcia, Spaind. 9 December 1936 Croydon, England[br]Spanish engineer who played a major part in developing the autogiro in the 1920s and 1930s.[br]At the age of 17, Cierva and some of his friends built a successful two-seater biplane, the BCD-1 (C for Cierva). By 1919 he had designed a large three-engined biplane bomber, the C 3, which unfortunately crashed when its wing stalled (list its lift) during a slow-speed turn. Cierva turned all his energies to designing a flying machine which could not stall: his answer was the autogiro. Although an autogiro looks like a helicopter, its rotor blades are not driven by an engine, but free-wheel like a windmill. Forward speed is provided by a conventional engine and propeller, and even if this engine fails, the autogiro's rotors continue to free-wheel and it descends safely. Cierva patented his autogiro design in 1920, but it took him three years to put theory into practice. By 1925, after further improvements, he had produced a practical rotary-winged flying machine.He moved to England and in 1926 established the Cierva Autogiro Company Ltd. The Air Ministry showed great interest and a year later the British company Avro was commissioned to manufacture the C 6A Autogiro under licence. Probably the most significant of Cierva's autogiros was the C 30A, or Avro Rota, which served in the Royal Air Force from 1935 until 1945. Several other manufacturers in France, Germany, Japan and the USA built Cierva autogiros under licence, but only in small numbers and they never really rivalled fixed-wing aircraft. The death of Cierva in an airliner crash in 1936, together with the emergence of successful helicopters, all but extinguished interest in the autogiro.[br]Principal Honours and DistinctionsDaniel Guggenheim Medal. Royal Aeronautical Society Silver Medal, Gold Medal (posthumously) 1937.Bibliography1931, Wings of To-morrow: The Story of the Autogiro, New York (an early account of his work).He read a paper on his latest achievements at the Royal Aeronautical Society on 15 March 1935.Further ReadingP.W.Brooks, 1988, Cierva Autogiros: The Development of Rotary Wing Flight, Washington, DC (contains a full account of Cierva's work).Jose Warleta. 1977, Autogiro: Juan de la Cierva y su obra, Madrid (a detailed account of his work in Spain).Oliver Stewart, 1966, Aviation: The Creative Ideas, London (contains a chapter on Cierva).JDS -
2 Aerospace
See also: INDEX BY SUBJECT AREA[br]Caproni, Giovanni BattistaDassault, MarcelGiffard, Baptiste Henry JacquesJohnson, Clarence LeonardKorolov, Sergei PavlovichSopwith, Sir Thomas Octave MurdochTsiolkovsky, Konstantin Eduardovich
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Cierva, Juan de la — ▪ Spanish engineer born Sept. 21, 1895, Murcia, Spain died Dec. 19, 1936, London aeronautical engineer who invented the autogiro, an aircraft in which lift is provided by a freely rotating rotor and which served as the forerunner of the… … Universalium
Juan de la Cierva y Codorníu — Saltar a navegación, búsqueda «Juan de la Cierva» redirige aquí. Para otras acepciones, véase Juan de la Cierva (desambiguación). Juan de la Cierva y Codorníu … Wikipedia Español
Juan de la Cierva — «Juan de la Cierva» redirige aquí. Para otras acepciones, véase Juan de la Cierva (desambiguación). Juan de la Cierva y Codorníu Retrato de Juan de la Cierva y Codorníu … Wikipedia Español
Cierva — Juan de la Cierva y Codorniu (* 21. September 1895 in Murcia; † 19. Dezember 1936 in der Nähe von London) war ein spanischer Ingenieur und Luftfahrtpionier. Portrait von Juan de la Cierva y Codorniu Inhaltsverzeichnis … Deutsch Wikipedia
Juan de la Cierva (Getafe) — Juan de la Cierva Datos País … Wikipedia Español
Juan (desambiguación) — Juan puede referirse a: Juan, nombre de pila masculino en español. Contenido 1 Desambiguaciones 1.1 de Títulos 1.2 de Nombres compuestos 1.3 de Nombres y ape … Wikipedia Español
Juan de la Cierva — This name uses Spanish naming customs; the first or paternal family name is De la Cierva and the second or maternal family name is Codorníu. Juan de la Cierva … Wikipedia
Cierva C.8R — Nachbau einer Cierva C.6 im Cuatro Vientos Air Museum, Madrid Der Cierva C.6 war ein Tragschrauber, auch Autogiro oder Gyrocopter genannt, ein Drehflügelflugzeug des spanischen Konstrukteurs Don Juan de la Cierva. Inhaltsverzeichnis 1 C.6 A … Deutsch Wikipedia
Juan de la Cierva (desambiguación) — Existen 3 personajes y 2 lugares españoles llamados Juan de la Cierva: Juan de la Cierva y Peñafiel, abogado, político y empresario; Juan de la Cierva y Codorníu, hijo del anterior, ingeniero y aviador, inventor del autogiro; Juan de la Cierva y… … Wikipedia Español
Juan de la Cierva y Codorníu — Pour les articles homonymes, voir De la Cierva. Ne doit pas être confondu avec Juan de la Cierva y Peñafiel … Wikipédia en Français
Cierva C.1 — Tipo Autogiro experimental Fabricante Juan de la Cierva y Codorníu Diseñado por Juan de la Cierva y Codorníu Primer vuelo … Wikipedia Español
