The attached report describes active vibration control in helicopter fuselages using the ACSR (Active Control of Structural Response) approach. In this approach the vibration reduction is carried out by using four actuators in the fuselage. The fuselage is modeled by finite elements. The vibratory aerodynamic loads include a free wake combined with rotor/fuselage interactional aerodynamics. An improved control algorithm preferentially reduces accelerations at selected airframe locations where vibration levels are important. Fuselage vibrations are reduced below 0.05g at all locations.


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    Title :

    Vibration Reduction in Rotorcraft Using the ACSR Approach with Enhanced Aerodynamic and Control Modeling


    Contributors:

    Publication date :

    2000


    Size :

    6 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English







    Vibration Suppression in Helicopters Using the ACSR Approach with Improved Aerodynamic Modeling

    Friedmann, P. / Cribbs, R. | British Library Conference Proceedings | 1999


    Vibration Reduction in Rotocraft Using an Enhanced ACSR Model

    Cribbs, R. / Friedmann, P. P. / American Institute of Aeronautics and Astronautics et al. | British Library Conference Proceedings | 2000