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Semi-analytical static aeroelastic analysis and response of flexible subsonic wings

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  • Berci, M.

Abstract

A semi-analytical model for the combined static aeroelastic analysis and response of flexible subsonic wings is presented. Based on a general variational formulation, the proposed aeroelastic models allow any arbitrary distribution of the flexible wing’s physical properties and provide with a continuous solution of the wing’s displacement along the span, as suitable for parametric optimisation studies within preliminary wing design. Numerical results which provide sound insights on the behaviour of a flexible wing in subsonic flow are obtained and critically discussed for all aeroelastic models, with respect to the most relevant aerodynamic and structural parameters as well as the computational efficiency. Different degrees of fidelity are considered for the aerodynamic modelling and the formulated modified strip theory is shown to be an excellent compromise between the lower complexity of standard strip theory and the higher accuracy of lifting line theory. The modified strip theory is hence suggested as a general and effective steady aerodynamic tool for the multidisciplinary design and optimisation of flexible wings in the subsonic regime.

Suggested Citation

  • Berci, M., 2015. "Semi-analytical static aeroelastic analysis and response of flexible subsonic wings," Applied Mathematics and Computation, Elsevier, vol. 267(C), pages 148-169.
    • Handle: RePEc:eee:apmaco:v:267:y:2015:i:c:p:148-169
    DOI: 10.1016/j.amc.2015.04.095
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