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  2. List of rotorcraft manufacturers by country - Wikipedia

    en.wikipedia.org/wiki/List_of_rotorcraft...

    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]

  3. Cierva Autogiro Company - Wikipedia

    en.wikipedia.org/wiki/Cierva_Autogiro_Company

    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

  4. Juan de la Cierva - Wikipedia

    en.wikipedia.org/wiki/Juan_de_la_Cierva

    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 ...

  5. Cierva C.7 - Wikipedia

    en.wikipedia.org/wiki/Cierva_C.7

    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.

  6. Cierva C.30 - Wikipedia

    en.wikipedia.org/wiki/Cierva_C.30

    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

  7. Kellett Autogiro Corporation - Wikipedia

    en.wikipedia.org/wiki/Kellett_Autogiro_Corporation

    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.

  8. List of rotorcraft - Wikipedia

    en.wikipedia.org/wiki/List_of_rotorcraft

    This page was last edited on 12 January 2025, at 21:14 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  9. Helicopter rotor - Wikipedia

    en.wikipedia.org/wiki/Helicopter_rotor

    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 ...