Under supersonic flow conditions, slender bodies in close proximity induce aerodynamic interference effects. This paper aims to quantify the magnitude of the resulting interference loads and to understand the underlying flowphysics mechanisms that cause them. A pair of identical slender bodies are investigated through a series of wind-tunnel experiments and supporting computational fluid dynamics (CFD) predictions. The bodies induce a complex interference flowfield, which tends to be bespoke to each configuration. The flow features include impinging shock and expansion waves, conical shock reflections, strong skewing of the boundary-layer flows and shock diffraction. The effects of axial stagger, lateral separation and the strength of the primary disturbance flow field are evaluated. The interference loads are found to be most sensitive to the initial location of the primary disturbance but are also affected by its strength. In addition, maximum interference loads which equate to an effective incidence of up to 6 deg are observed. Finally, very good agreement is found between the measurements and the CFD predicted normal force and pitching moment.


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    Title :

    Aerodynamic interference between high-speed slender bodies


    Additional title:

    Aerodynamische Wechselwirkung zwischen schlanken Hochgeschwindigkeits-Flugkörpern


    Contributors:

    Published in:

    Shock Waves ; 20 , 2 ; 89-101


    Publication date :

    2010


    Size :

    13 Seiten, 27 Bilder, 14 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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