A refined coupled rotor/flexible fuselage aeroelastic response analysis is developed for vibration reduction studies using active control of structural response (ACSR). The model is capable of representing flexible hingeless rotors combined with a flexible fuselage, and a platform for installing the ACSR system. The model is validated by conducting comparisons with previously obtained results for trim, vibratory hub loads and aeroelastic response, for fixed hub conditions. The results indicate that the fixed hub condition is not a reliable model for the estimation of vibratory hub loads; however, the fixed hub model produces reasonable results for the trim vector which is insensitive to both fuselage dynamics and sensitivity. The role of non-structural mass for obtaining correct estimates for the lower fuselage frequencies is also addressed. The influence of the number of the blades on the vibratory loads is also shown. This paper is a precursor to vibration reduction studies which will be conducted in a sequel.


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    Title :

    A coupled helicopter rotor/fuselage aeroelastic response model for ACSR


    Additional title:

    Ein aeroelastisches Reaktionsmodell eines gekoppelten Helikopterrotors und -rumpfes für die aktive Regelung der Strukturdynamik


    Contributors:
    Chiu, T. (author) / Friedmann, P.P. (author)


    Publication date :

    1995


    Size :

    27 Seiten



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    A Coupled Helicopter Rotor/Fuselage Aeroelastic Response Model for ACSR

    Chiu, T. / Friedmann, P. / American Institute of Aeronautics and Astronautics| ASME| ASCE | British Library Conference Proceedings | 1995





    ACSR System for Vibration Suppression in Coupled Helicopter Rotor/Flexible Fuselage Models

    Chiu, T. / Friedmann, P. / AIAA et al. | British Library Conference Proceedings | 1996