The characteristics and implications of use of a derated ion thruster for north-south stationkeeping (NSSK) propulsion are discussed. A derated thruster is a 30 cm diameter primary propulsion ion thruster operated at highly throttled conditions appropriate to NSSK functions. The performance characteristics of a 30 cm ion thruster are presented, emphasizing throttled operation at low specific impulse and high thrust-to-power ratio. Performance data and component erosion are compared to other NSSK ion thrusters. Operations benefits derived from the performance advantages of the derated approach are examined assuming an INTELSAt 7-type spacecraft. Minimum ground test facility pumping capabilities required to maintain facility enhanced accelerator grid erosion at acceptable levels in a lifetest are quantified as a function of thruster operating condition. Approaches to reducing the derated thruster mass and volume are also discussed.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Performance and Optimization of a Derated Ion Thruster for Auxiliary Propulsion


    Beteiligte:
    M. J. Patterson (Autor:in) / J. E. Foster (Autor:in)

    Erscheinungsdatum :

    1991


    Format / Umfang :

    18 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch





    Performance and optimization of a derated ion thruster for auxiliary propulsion

    Patterson, Michael J. / Foster, John E. | NTRS | 1991



    Derated ion thruster design issues

    Patterson, Michael J. / Rawlin, Vincent K. | NTRS | 1991


    Derated ion thruster development status

    Patterson, Michael J. / Haag, Thomas W. / Williams, George J., Jr. | NTRS | 1993