Numerical optimization was used in conjunction with an inviscid, full potential equation, transonic flow analysis computer code to design an upper surface contour for a conventional airfoil to improve its supercritical performance. The modified airfoil was tested in a compressible flow wind tunnel. The modified airfoil's performance was evaluated by comparison with test data for the baseline airfoil and for an airfoil developed by optimization of leading edge of the baseline airfoil. While the leading edge modification performed as expected, the upper surface re-design did not produce all of the expected performance improvements. Theoretical solutions computed using a full potential, transonic airfoil code corrected for viscosity were compared to experimental data for the baseline airfoil and the upper surface modification. These correlations showed that the theory predicted the aerodynamics of the baseline airfoil fairly well, but failed to accurately compute drag characteristics for the upper surface modification.


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    Titel :

    Analysis of a theoretically optimized transonic airfoil


    Beteiligte:
    Lores, M. E. (Autor:in) / Burdges, K. P. (Autor:in) / Shrewsbury, G. D. (Autor:in)

    Erscheinungsdatum :

    01.11.1978


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Analysis of a theoretically optimized transonic airfoil

    Lores, M, E. / Burdges, K. P. / Shrewsbury, G. D. | TIBKAT | 1978


    Transonic Airfoil Analysis

    Holst, T. L. / Dougherty, F. C. / Gundy, K. L. et al. | NTRS | 1984


    Transonic airfoil analysis and design

    Carlson, L. A. | NTRS | 1980


    Transonic Airfoil Development

    Whitcomb, R. T. | NTRS | 1983


    Transonic airfoil codes

    Garabedian, P. R. | NTRS | 1979