The thrust of a rocket motor can be varied while maintaining efficiency over a range of pressure ratios using a design that allows for changing the relative position of a plug and a combustion chamber exit. The plug or the chamber exit may be attached to an adaptive control system for position modification. The plug may be positioned in a plug nozzle configuration or in an expansion-deflection (ED) configuration. In either configuration, the elongated downstream portion of the plug allows for efficiency over a wide range of pressure ratios, while ability to change plug position with respect to the chamber exit allows adjustment of rocket thrust.


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    Title :

    Systems and Methods for Varying the Thrust of Rocket Motors and Engines while Maintaining Higher Efficiency Using Moveable Plug Nozzles


    Contributors:
    D. G. Nyberg (author) / T. A. Groudle (author) / R. D. Smith (author)

    Publication date :

    2005


    Size :

    10 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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