An anti-resonance system for a blade defining an elongated channel therein and affixed to a helicopter rotor includes a moveable mass disposed within the elongated channel of the blade so as to be able to slide along elongated channel. A moving device coupled to the moveable mass is configured to move the moveable mass within the elongated channel. A controller is configured to cause the moving device to move the moveable mass to a selected position within the elongated channel so as to avoid the resonance vibrations of the blade during a rotor speed change. In a method of avoiding resonance of a helicopter blade, a current rotational speed of the blade is determined. A position of the moveable mass so as to avoid a resonance point at a current rotational speed is obtained. The moveable mass is moved to the position.


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    Title :

    Anti-Resonance System for Variable Speed Rotors


    Contributors:

    Publication date :

    2024-10-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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