Determination of the subcritical aeroelastic response to arbitrary time-dependent external excitation and determination of the flutter instability of open/closed-loop two-dimensional nonlinear airfoils constitute the main topics. To address these problems, Volterra series and indicial aerodynamic functions are used, and, in the same context, the pertinent aeroelastic nonlinear kernels are determined. Flutter instability predictions obtained within this approach compared with their counterparts generated via the frequency eigenvalue analysis and via experiments reveal excellent agreements. Implications of a number of important parameters characterizing the lifting surface and control law on the aeroelastic response/flutter are discussed, and pertinent conclusions are outlined.


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    Title :

    Nonlinear open-/closed-loop aeroelastic analysis of airfoils via volterra series


    Additional title:

    Analyse der nichtlinearen Aeroelastizität von Tragflächen mit Aktivschwingungsdämpfung durch Entwicklung in Volterra-Reihen


    Contributors:

    Published in:

    AIAA Journal ; 42 , 4 ; 673-686


    Publication date :

    2004


    Size :

    14 Seiten, 15 Bilder, 19 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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