An innovative pressure rail concept for wind tunnel sonic boom testing of modern aircraft configurations with very low overpressures was designed with an adjoint-based solution-adapted Cartesian grid method. The computational method requires accurate free-air calculations of a test article as well as solutions modeling the influence of rail and tunnel walls. Specialized grids for accurate Euler and Navier-Stokes sonic boom computations were used on several test articles including complete aircraft models with flow-through nacelles. The computed pressure signatures are compared with recent results from the NASA 9- x 7-foot Supersonic Wind Tunnel using the advanced rail design.


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    Title :

    Design of Rail Instrumentation for Wind Tunnel Sonic Boom Measurements and Computational-Experimental Comparisons


    Contributors:
    S. E. Cliff (author) / A. Elmiligui (author) / M. Aftosmis (author) / J. Morgenstern (author) / D. Durston (author)

    Publication date :

    2012


    Size :

    2 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English






    The 9x7 Wind Tunnel Sonic Boom Measurements and Computational-Experimental Comparisons

    Cliff, Susan E. / Elmiligui, Alaa / Durston, Don | NTRS | 2012


    Wind-tunnel sonic-boom testing techniques

    CARLSON, H. / MORRIS, O. | AIAA | 1966


    Wind-tunnel sonic-boom testing techniques.

    CARLSON, H. W. / MORRIS, O. A. | AIAA | 1967