The overall efficiency of a reaction engine, having primary and secondary combustion chambers, is greatly improved by reducing the primary exhaust velocity to subsonic speed. This is accomplished in a preferred embodiment by using an exhaust tube downstream of the primary nozzle. A tube diameter of about six times that of the primary throat diameter and a tube length of above five to ten times that of the tube diameter is considered optimum. (Author)


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    Title :

    Ducted Rockets


    Contributors:

    Publication date :

    1977


    Size :

    5 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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