To understand time-dependent aerodynamic loads on single and tandem (fore/aft) slender cylinders translated out into the supersonic freestream from a cavity at Mach 1.5, the normal force and pitching moment are experimentally obtained via load cells. For a single long store, the measurements were conducted with two different angles of attack at several static positions and with dynamic motions. For tandem stores, the fore- and aft-positioned stores were translated both independently and simultaneously with various time delays. The single long store results had good repeatability and revealed that the fastest dynamic motions ( t = 187 ) exhibited unsteady forces and moments that differed from quasi-static results. Moreover, the results from the tandem stores showed that the aft-positioned store had more favorable aerodynamic loads as compared to the front store for the static measurements. However, when stores were ejected simultaneously or with time delay, the aft-positioned store was strongly affected by the forward-positioned store and showed bifurcation on the aerodynamic loads after the shear layer.


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    Title :

    Time-Dependent Aerodynamic Loads on Single and Tandem Stores in a Supersonic Cavity


    Contributors:

    Published in:

    Journal of Aircraft ; 57 , 4 ; 702-714


    Publication date :

    2020-07-01




    Type of media :

    Conference paper , Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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