Abstract This work discusses the quantitative stability evaluation of aeroelastic problems with freeplay in the control surfaces. Stability estimation of linear time invariant and linear time periodic systems rely on eigenanalysis of state transition matrices and implies simplifications on the problems governed by nonlinear non-autonomous equations. Lyapunov Characteristic Exponents directly provide quantitative information on the stability of nonlinear non-autonomous dynamical systems. Stability estimation using Lyapunov Characteristic Exponents does not require a special reference solution and is consistent with the eigensolution of linear time invariant and Floquet-Lyapunov analysis of linear time periodic systems. Thus, they represent a natural generalization of conventional stability analysis. The Discrete QR method is used to practically estimate the Lyapunov Characteristic Exponents. The method is applied to a three-dimensional aeroelastic problem with freeplay introduced to the control surface.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Aeroelastic Stability Estimation of Control Surfaces with Freeplay Nonlinearity


    Contributors:
    Tamer, A. (author) / Masarati, P. (author)

    Published in:

    Publication date :

    2017-07-01


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Aeroelastic Response of the AGARD 445.6 Wing with Freeplay Nonlinearity

    Carrese, Robert / Joseph, Nishit / Marzocca, Pier et al. | AIAA | 2017


    Nature of Freeplay-Induced Aeroelastic Oscillations

    Kholodar, D B | Online Contents | 2014



    REVIEW ON NONLINEAR AEROELASTIC ANALYSIS WITH FREEPLAY

    Sun, Y. / Han, Z. / Cao, H. et al. | DataCite | 2024