Designs of high performance resistojets for primary and auxiliary propulsion are described. Thruster power for the primary propulsion application was in the 2 to 3 kW range while auxiliary propulsion power per thruster was 0.15 to 0.25 kW. Propellants considered were hydrogen and ammonia. The report described design techniques used to forecast the temperature and energy flux distributions using mathematical modeling by personal microcomputer. BASIC language is used throughout to give the designer rapid interaction and control. Both designs integrate compact first stage coils with concentric tubular heaters. The hybrid heater design allows better thruster power matching with the spacecraft power bus. Projected specific impulse levels were 760 to 830 s for hydrogen and 380 to 410 s for ammonia.


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    Title :

    Preliminary Design Study of Hydrogen and Ammonia Resistojets for Prime and Auxiliary Thrusters


    Contributors:
    R. J. Page (author) / W. A. Stoner (author) / L. Barker (author)

    Publication date :

    1988


    Size :

    49 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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