An aerodynamic foil, such as an aerofoil or a hydrofoil, has a body 10 with a pivot axis located within the body. The pivot axis is parallel to a length of the body and perpendicular to a depth of the body, and the body has a limited range 13 of rotation about the pivot axis. The pivot axis may be provided on a pivot bar 11, to which may be secured a resistance element 12 such as a spring, a wedge, a hydraulic element or a rubber device. Any resistance element may be adjustable and may allow the foil to be secured in a non-neutral position; suitably, when in such a position, the device can act as a sail in a crosswind. The device may be mounted on a vehicle or on a stationary object or building. Body 10 may have a teardrop shape.


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    Title :

    Limited rotation aerofoil


    Contributors:
    JIM JAYES (author)

    Publication date :

    2021-07-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / E04H Gebäude oder ähnliche Bauwerke für besondere Zwecke , BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES



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