Flutter analysis of a wing is performed in compressible flow using state-space representation of the unsteady aerodynamic behavior. Three different expressions are used to incorporate corrections due to the finite-span effects of the wing in estimating the lift-curve slope. The structural formulation is based on a Rayleigh-Pitz technique with Chebyshev polynomials used for the wing deflections. The aeroelastic equations are solved as an eigen-value problem to determine the flutter speed of the wing. The flutter speeds are found to be higher in these cases, when compared to that obtained without accounting for the finite-span effects. The derivatives of the flutter speed with respect to the shape parameters, namely: aspect ratio, area, taper ratio and sweep angle, are calculated analytically. The shape sensitivity derivatives give a linear approximation to the flutter speed curves over a range of values of the shape parameter which is perturbed. Flutter and sensitivity calculations are performed on a wing using a lifting-surface unsteady aerodynamic theory using modules from a system of programs called FAST.


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    Titel :

    Sensitivity Analysis of Flutter Response of a Wing Incorporating Finite-Span Corrections



    Kongress:

    Multidisciplinary Analysis and Optimization ; 1996 ; Panama City, FA, United States


    Erscheinungsdatum :

    1994-09-01


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Sensitivity Analysis of Flutter Response of a Wing Incorporating Finite-Span Corrections

    Issac, J. / Kapania, R. / Barthelemy, J. et al. | British Library Conference Proceedings | 1994


    Sensitivity analysis of flutter response of a wing incorporating finite-span corrections

    Issac, Jason / Kapania, Rakesh / Barthelemy, Jean-Francois | AIAA | 1994


    Influence of span on wing flutter

    Leliwakrzywoblocki, Z. | Engineering Index Backfile | 1941


    The Influence of Span on Wing Flutter

    Leliwa-Krzywoblocki, Zbigniew | Emerald Group Publishing | 1941


    Shape sensitivity analysis of flutter response of a laminated wing

    Kapania, Rakesh K. / Bergen, Frederick D'oench, Jr. / Barthelemy, Jean-Francois M. | NTRS | 1991