An approach for computing worst-case flutter margins has been formulated in a robust stability framework. Uncertainty operators are included with a linear model to describe modeling errors and flight variations. The structured singular value, mu, computes a stability margin that directly accounts for these uncertainties. This approach introduces a new method of computing flutter margins and an associated new parameter for describing these margins. The mu margins are robust margins that indicate worst-case stability estimates with respect to the defined uncertainty. Worst-case flutter margins are computed for the F/A-18 Systems Research Aircraft using uncertainty sets generated by flight data analysis. The robust margins demonstrate flight conditions for flutter may lie closer to the flight envelope than previously estimated by p-k analysis.


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    Titel :

    Robust Flutter Margin Analysis that Incorporates Flight Data


    Beteiligte:
    R. Lind (Autor:in) / M. J. Brenner (Autor:in)

    Erscheinungsdatum :

    1998


    Format / Umfang :

    102 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch