The AFOSR/DARPA University Nanosat program aims to produce a small fleet of nanosatellites. Among the most ambitious is the "Dawgstar" from the University of Washington. It proposes to use micro-PPTs to formation fly with two other student-built satellites in a constellation known as ION-F. Dawgstar, planned for launch in 2001, provides a useful technology testbed for future micro- and nano-sat efforts. PPTs were selected because they lend themselves well to very small satellites due to their solid-state nature. The PPT also offers a very high specific impulse compared to other candidate microthrusters. The fundamentals of the PPT propulsion system are described and a preliminary layout of the concept is explained. Preliminary tests results from scaled configurations are presented. A key area for miniaturization is the onboard electronics. The paper describes work underway to miniaturize the PPT electronics to a size consistent with the nanosatellite goals, including design analyses and preliminary testing of electronics breadboards.


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    Titel :

    A micro pulsed plasma thruster (PPT) for the "Dawgstar" spacecraft


    Beteiligte:
    Cassady, R.J. (Autor:in) / Hoskins, W.A. (Autor:in) / Campbell, M. (Autor:in) / Rayburn, C. (Autor:in)


    Erscheinungsdatum :

    01.01.2000


    Format / Umfang :

    910739 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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