A transient pulse technique is used to obtain harmonic forces from a time-marching solution of the complete unsteady transonic small perturbation potential equation. 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 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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    Title :

    Airfoil shape and thickness effects on transonic airloads and flutter


    Contributors:

    Conference:

    AIAA/ASME/ASCE/AHS 24th Struct., Struct. Dyn. and Mater. Conf. ; 1983 ; Lake Tahoe, NV, United States


    Publication date :

    1983-03-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :