We have developed an inexpensive cold radiometer for use in thermal/vacuum chambers to measure heat loads, characterize emissivity and specularity of surfaces and to survey areas to evaluate stray heat loads. We report here the results of two such tests for the James Webb Space Telescope to measure heat loads and effective emissivities of 2 major pieces of optical ground support equipment that will be used in upcoming thermal vacuum testing of the Telescope.


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    Title :

    Using a Cold Radiometer to Measure Heat Loads and Survey Heat Leaks


    Contributors:
    M. Dipirro (author) / J. Tuttle (author) / T. Hait (author) / P. Shirron (author)

    Publication date :

    2014


    Size :

    8 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English






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