A transient pulse technique is used to obtain harmonic forces from a time-marching solution of the complete unsteady transonic small perturbation potential evaluation. The unsteady pressures and forces acting on a model of the NACA 64A010 conventional airfoil and the MBB A-3 supercritical airfoil over a range of Mach numbers are examined in detail. Flutter calculations at constant angle of attack show a similar flutter behavior for both airfoils, except for a boundary shift in Mach number associated with a corresponding Mach number shift in the unsteady aerodynamic forces. Differences in the static aeroelastic twist behavior for the two airfoils are significant.


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    Titel :

    Airfoil shape and thickness effects on transonic airloads and flutter


    Beteiligte:
    Bland, S. R. (Autor:in) / Edwards, J. W. (Autor:in)

    Kongress:

    Structures, Structural Dynamics and Materials Conference ; 1983 ; Lake Tahoe, NV


    Erscheinungsdatum :

    1983-01-01


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch