Abstract The Japanese Advanced Meteorological Imager (JAMI) Flight Pulse Tube Cooler System features two integral pulse tube cryocoolers. They are configured to be standby redundant and control the temperature of two focal planes. The JAMI mission acquires multi-spectral imagery for operational weather needs over Japan, East Asia, and Australia. JAMI is scheduled to fly on the Multifunctional Transport Satellite (MTSAT) in summer of 2003. The program delivered the two flight coolers and electronics in December 2001. This paper presents data collected on the flight coolers during acceptance testing. Tests included thermal performance mapping at various power levels, temperature stability tests, and launch vibration testing. Designed conservatively for a 10-year life, the coolers are required to provide 1.75W cooling at 67K while rejecting to 300K with less than 90W input power to the electronics. At these loads and temperatures the cooler has an additional 100% margin. The total mass of each cooler and electronics system is 10.4 kg (20.8 kg as a redundant pair). The radiation-hardened software driven control electronics provides cooler control functions which are fully re-configurable in orbit. These functions include precision temperature control to better than 25mK p-p.


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    Titel :

    JAMI Flight Pulse Tube Cooler System


    Beteiligte:
    Raab, J. (Autor:in) / Colbert, R. (Autor:in) / Godden, J. (Autor:in) / Harvey, D. (Autor:in) / Orsini, R. (Autor:in) / Toma, G. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2003-01-01


    Format / Umfang :

    7 pages




    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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