During the development of the BHT-6000 Hall thruster for flight on NASA’s Power and Propulsion Element, a facility effect test campaign was performed on an engineering unit of the thruster. Testing occurred in Vacuum Facility 5 at NASA Glenn Research Center. The goal of the test campaign was to characterize the behavior of the BHT-6000 Hall thruster as functions of facility effects such that the thruster’s in-flight behavior can be reasonably bounded. In particular, the behavior of the thruster with regard to the background pressure and electrical environment was tested. The background pressure was controlled by injecting supplemental propellant flow into the environment, while the electrical environment was controlled by biasing the facility beam dump. Thrust was found to remain constant over the tested range of pressures while specific impulse was found to increase slightly (1 to 1.5% over a range of up to 20 μTorr, depending on operating point). Plasma plume properties, particularly of ions exiting the side of the thruster, were found to be highly sensitive to pressure and may require pressures of less than a few μTorr for accurate measurements. The thruster was found to operate identically with changing beam dump bias voltage to within measurement uncertainties.


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    Title :

    Facility Effect Characterization Test of the BHT-6000 Hall Thruster


    Contributors:
    W. Huang (author) / J. H. Gilland (author) / D. A. Herman (author) / L. Zuo (author) / C. Feng (author) / P. Wright (author) / I. Johnson (author) / C. Mullins (author) / K. Hohman (author)

    Publication date :

    2023


    Size :

    17 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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