The propellant gas for a pulsed self-field MPD thruster must be supplied by a valve which will necessarily be separated from the thruster injectors by some ullage volume. A model and experimental data are presented showing the effect of the ullage volume on the propellant pulse shape, along with a discussion of the proper location for the propellant flow choke point(s). Prospective MPD pulse valves are surveyed and the performance of two solenoid valves, one with a pulse length less than 2 milliseconds, is included. Pulse shape data is presented for a thruster specially modified to reduce the ullage volume.


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    Title :

    Propellant injection for MPD thrusters


    Contributors:

    Conference:

    International Electric Propulsion Conference ; 1979 ; Princeton, NJ


    Publication date :

    1979-10-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English





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