Preliminary ground correlation testing has been conducted with an 8 cm mercury ion thruster and diagnostic instrumentation replicating to a large extent the IAPS flight test hardware, configuration, and electrical grounding/isolation. Thruster efflux deposition retained at 25 C was measured and characterized. Thruster ion efflux was characterized with retarding potential analyzers. Thruster-generated plasma currents, the spacecraft common (SCC) potential, and ambient plasma properties were evaluated with a spacecraft potential probe (SPP). All the measured thruster/spacecraft interactions or their IAPS measurements depend critically on the SCC potential, which can be controlled by a neutralizer ground switch and by the SPP operation.


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    Titel :

    Ground Correlation Investigation of Thruster Spacecraft Interactions to Be Measured on the IAPS Flight Test


    Beteiligte:
    J. L. Power (Autor:in)

    Erscheinungsdatum :

    1984


    Format / Umfang :

    36 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch