The historical record of the SERT II ion thrustors and spacecraft performance for 6-1/2 years since the February 1970 launch is reviewed. The most recent ion thrustor operation test shows no changes since 1974. Thrustor 2 is fully operational with no performance degradation. Thrustor 1 has a high voltage grid short, but continues to demonstrate cathode and discharge relight capability. Spacecraft orbit and dynamic analysis indicates a stable, sun-synchronous spacecraft orientation by 1979. An attitude adjustment maneuver was performed in August 1976 to achieve this orientation and provide sufficient continuous solar power for thrustor operation in 1979.


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    Titel :

    Status of SERT II thrusters and spacecraft - 1976


    Beteiligte:

    Kongress:

    International Electric Propulsion Conference ; 1976 ; Key Biscayne, FL


    Erscheinungsdatum :

    1976-11-01


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch







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    Kerslake, W.R. | Tema Archiv | 1978


    Status of SERT II spacecraft and ion thrusters, 1978

    Kerslake, W. R. / Ignaczak, L. R. | NTRS | 1978