Two formulations of the oblique wing flutter problem are presented; one formulation allows only simple wing bending deformations and rigid body roll as degrees of freedom, while the second formulation includes a more complex bending-torsional deformation together with the roll freedom. Flutter is found to occur in two basic modes. The first mode is associated with wing bending-aircraft roll coupling and occurs at low values of reduced frequency. The second instability mode closely resembles a classical bending-torsion wing flutter event. This latter mode occurs at much higher reduced frequencies than the first. The occurrence of the bending-roll coupling mode is shown to lead to lower flutter speeds while the bending-torsion mode is associated with higher flutter speeds. The ratio of the wing mass moment of inertia in roll to the fuselage roll moment of inertia is found to be a major factor in the determination of which of the two instabilities is critical.


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    Titel :

    Flutter of asymmetrically swept wings


    Beteiligte:

    Erscheinungsdatum :

    12.03.1976


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Flutter of Asymmetrically Swept Wings

    T.A. Weisshaar / J.B. Crittenden | AIAA | 1976


    Flutter and divergence of swept-back and swept-forward wings

    Babister, A. W. / Aeronautical Research Council | TIBKAT | 1953


    Aeroelastic Response and Flutter of Swept Aircraft Wings

    Piergiovanni Marzocca / Liviu Librescu / Walter A. Silva | AIAA | 2002


    Aeroelastic response and flutter of swept aircraft wings

    Marzocca, P. / Librescu, L. / Silva, W.A. | Tema Archiv | 2002


    Flutter of forward swept wings, analyses and tests

    WEISSHAAR, T. / ZEILER, T. / HERTZ, T. et al. | AIAA | 1982