The unsteady transonic flow around a flexible transport-type swept-wing configuration with the supercritical airfoil BAC 3-11/RES/30/21 is studied regarding the effects of dynamic shock/boundary-layer interaction involving separated-flow areas on the local fluid-structure coupling at unit Reynolds numbers of around 1.5 x 107 m-1. A fast-responding pressure-sensitive-paint system using pyrene on anodic aluminum binder is applied to measure the unsteady pressure distribution on the entire wing surface, with high spatial and temporal resolution providing a unique view on the spanwise flow development and self-induced shock oscillations. The aeroelastic response of the wing structure is synchronously recorded by videogrammetric deformation measurement. Flow cases with incipient separation and full-scale separation at Mach numbers of 0.86 and 0.92 are compared. A weak shock/boundary-layer interaction with incipient separation has minor effects on the wing structure, despite the occurrence of large pressure fluctuations, whereas the strong interaction involving shock-induced separation results not only in significantly weaker fluctuations in the pressure field, but also in a strong fluid-structure coupling.


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    Titel :

    Unsteady transonic flow over a transport-type swept wing


    Weitere Titelangaben:

    Instationäre transsonische Strömung über den gepfeilten Flügel für ein Transportflugzeug



    Erschienen in:

    AIAA Journal ; 50 , 2 ; 399-415


    Erscheinungsdatum :

    2012


    Format / Umfang :

    17 Seiten, 18 Bilder, 3 Tabellen, 64 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch





    Unsteady Transonic Flow over a Transport-Type Swept Wing

    Steimle, P. Christian / Karhoff, Daniel-Christian / Schröder, Wolfgang | AIAA | 2012


    Numerical Solution of Three-Dimensional Unsteady Transonic Flow over Swept Wings

    C. J. Borland / D. P. Rizzetta / H. Yoshihar | AIAA | 1982


    Viscous effects on a swept wing in transonic flow

    SCHMITT, V. / DESTARAC, D. / CHAUMET, B. | AIAA | 1983