The thrust vectoring of supersonic Coanda jets was improved by designing a nozzle to skew the initial jet velocity profile. A new nozzle design procedure, based on the method of characteristics, was developed to design a nozzle which produces a specified exit velocity profile. The thrust vectoring of a simple convergent nozzle, a convergent-divergent nozzle, and a nozzle which produces a skewed velocity profile matched to the curvature of the Coanda surface were expermentially compared over a range of pressure ratios from 1.5 to 3.5. Elimination of the expansion shocks with the C-D nozzle is shown to greatly improve the thrust vectoring; elimination of turning shocks with the skewed profile nozzle further improves the vectoring.


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    Title :

    Design of Supersonic Coanda Jet Nozzles


    Contributors:
    P. M. Bevilaqua (author) / J. D. Lee (author)

    Publication date :

    1987


    Size :

    24 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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