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Cierva Autogiro Company (defunct) [39] Fairey Aviation – aircraft manufacturing arm was taken over by Westland Aircraft in 1960 [40] Firth Helicopters [4] Gadfly Aircraft (defunct) Saro – merged with Westland Aircraft, later Agusta-Westland [41] Thruxton Aviation [28] Wallis Autogyros [42]
Juan de la Cierva's first British-built autogyro was the C.8 design.It and some other designs were built in conjunction with Avro.The pre-war Cierva C.30 proved popular. . Nearly 150 were built under licence in the United Kingdom by Avro, in Germany by Focke-Wulf, and in France by Lioré-et-Oliv
Juan de la Cierva's work on rotor-wing dynamics made possible the modern helicopter, whose development as a practical means of flight had been prevented by a lack of understanding of these matters. The understanding that he established is applicable to all rotor-winged aircraft; though lacking true vertical flight capability, work on the ...
Juan de la Cierva designed a new rotor with a second linkage on the hub to correct the overstrain to eliminate cyclic stresses. To the existing one of abatement that eliminated the problem of lift asymmetry, a second one was added, which was designated as a drag joint , which allowed the blade to oscillate in the plane of rotation.
The Cierva C.30 is an autogyro designed by Juan de la Cierva and built under licence from the Cierva Autogiro Company by A V Roe & Co Ltd (Avro), Lioré-et-Olivier and Focke-Wulf. Design and Development
In 1931, Kellett Autogiro licensed, from the Autogiro Company of America, Juan de la Cierva's and Harold Pitcairn's patents for rotary-wing aircraft. [1] The first three designed were all typical Cierva designs and the more advanced KD-1 was similar to the contemporary Cierva C.30.
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Diagram of fully articulated main rotor head. Juan de la Cierva developed the fully articulating rotor for the autogyro. The basis of his design permitted successful helicopter development. In a fully articulated rotor system, each rotor blade is attached to the rotor hub through a series of hinges that let the blade move independently of the ...