The flow over an aircraft bay is often represented using a rectangular cavity; however, this simplification neglects many features of actual flight geometry that could affect the unsteady pressure field and resulting loading in the bay. To address this shortcoming, a complex cavity geometry was developed to incorporate more realistic aircraft-bay features including shaped inlets, internal cavity structure, and doors. A parametric study of these features was conducted based on fluctuating pressure measurements at subsonic and supersonic Mach numbers. Resonance frequencies and amplitudes increased in the complex geometry compared to a simple rectangular cavity that could produce severe loading conditions for store carriage. High-frequency content and dominant frequencies were generated by features that constricted the flow such as leading-edge overhangs, internal cavity variations, and the presence of closed doors. Broadband frequency components measured at the aft wall of the complex cavities were also significantly higher than in the rectangular geometry. These changes highlight the need to consider complex geometric effects when predicting the flight loading of aircraft bays.


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    Titel :

    Complex Geometry Effects on Cavity Resonance



    Erschienen in:

    Erscheinungsdatum :

    2016




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :

    Klassifikation :

    BKL:    55.50 Luftfahrzeugtechnik / 55.60 Raumfahrttechnik / 55.60 / 50.93 / 55.50 / 50.93 Weltraumforschung
    Lokalklassifikation TIB:    770/7040



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    Complex Geometry Effects on Subsonic Cavity Flows

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    Complex Geometry Effects on Open Cavity Dynamics

    Casper, Katya M. / Wagner, Justin L. / Beresh, Steven J. et al. | AIAA | 2014


    Complex Geometry Effects on Subsonic Cavity Flows (AIAA 2015-1291)

    Casper, Katya M. / Wagner, Justin L. / Beresh, Steven J. et al. | British Library Conference Proceedings | 2015


    Complex Geometry Effects on Supersonic Cavity Flows (AIAA 2014-3025)

    Casper, K. / Wagner, J. / Beresh, S. et al. | British Library Conference Proceedings | 2014