We have been developing a long life spaceborne cryocooler for the thermal infrared radiometer (TIR), an observation system on the advanced spaceborne thermal emission and reflection radiometer (ASTER). ASTER was selected by NASA to fly on the EOS-AM1 platform which will be launched in 1998. The TIR cryocooler was designed to maintain the infrared detector's temperature at 80 Kelvin. And to do this, the cooling capacity is required more than 1.2 W when the cold head is 70 K. The cryocooler must operate continuously for more than 5 years with low mechanical disturbance. To meet these requirement, we used clearance seals and linear electric motors for long life, and back-to-back compressors and an expander with an active balancer for low mechanical disturbance.


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    Title :

    Long-life spaceborne cryocooler for the Advanced Spaceborne Thermal Emission and Reflection Radiometer/Thermal Infrared Radiometer (ASTER/TIR)


    Contributors:

    Conference:

    Infrared Spaceborne Remote Sensing II ; 1994 ; San Diego,CA,United States


    Published in:

    Publication date :

    1994-09-14





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English