The paper deals with some preliminary results of the Mission Profile Life Test planned to conduct a program of long-term test segments of 30-cm diameter thrusters and power processing units under computer control. Thruster performance data and other operational characteristics taken at various times during a test segment are compared and the results are evaluated in light of the life-timing mechanisms. Thruster control algorithms are also presented. The first test segment completed 2700 hr of a planned 4000 hr test with a J-series 30-cm thruster. The last 1600 hr used a functional model power processing unit (PPU) operated in vacuum. The thruster-PPU was controlled by a computer with software developed to control start-ups, throttling, and variety of off-normal conditions.


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    Title :

    Preliminary results of the mission profile life test of a 30 cm Hg bombardment thruster


    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