The paper presents a theory for the unsteady aerodynamics of deformable thin airfoils. It extends the theory developed by Theodorsen and Garrick, which is restricted to rigid body motion. Frequency-domain lift, pitching moment, and thrust expressions are derived for an airfoil undergoing harmonic oscillations and deformation in the form of the Chebychev polynomials. The first two polynomials give the rigid body motion, whereas the rest represent the deformation. The results are verified with the time-domain unsteady aerodynamic theory of Peters. Numerical results are presented for several combinations of airfoil motion, which identify various possibilities for thrust generation using a deformable airfoil.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Unsteady Aerodynamics of Deformable Thin Airfoils


    Contributors:

    Published in:

    Journal of Aircraft ; 51 , 6 ; 1673-1680


    Publication date :

    2014-11-01




    Type of media :

    Conference paper , Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    UNSTEADY AERODYNAMICS OF DEFORMABLE THIN AIRFOILS

    Walker, W. / Patil, M. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2010


    Unsteady Aerodynamics of Deformable Thin Airfoils

    Walker, William / Patil, Mayuresh | AIAA | 2010


    Unsteady Aerodynamics of Membrane Airfoils

    Rojratsirikul, Pinunta / Wang, Zhijin / Gursul, Ismet | AIAA | 2008


    Unsteady Aerodynamics of Membrane Airfoils

    Rojratsirikul, P. / Wang, Z. / Gursul, I. et al. | British Library Conference Proceedings | 2008


    Unsteady aerodynamics of rapidly pitched airfoils

    WU, J. / TUNCER, I. | AIAA | 1986