A cold gas micropropulsion system for attitude control, installed on the one liter nanosatellite URSA MAIOR, is described. The system uses nitrogen gas stored in a tank as a propellant, improving the specific impulse by heating the gas before it reaches the expansion nozzle. The most innovative components of the system are the microthrusters, manufactured on a few millimeters size silicon chip, which allows to obtain very low thrust levels at a high efficiency. The micropropulsion system design, integration and performance evaluation are discussed in the paper. The theoretical performance is compared with ground testing results, showing a very good agreement. The system can be scaled to the needs of different missions, giving thrusts ranging from 20 my N to 2mN.


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    Titel :

    The nanosatellite URSA MAIOR micropropulsion system


    Beteiligte:
    Santoni, F. (Autor:in) / Manzoni, G. (Autor:in) / Miotti, P. (Autor:in) / De Grandis, F. (Autor:in) / Mosetti, G. (Autor:in) / Di Fabrizio, E. (Autor:in)


    Erscheinungsdatum :

    2003


    Format / Umfang :

    6 Seiten, 8 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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