Using a cold radiometer to measure heat loads and survey heat leaks

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...

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Bibliographic Details
Main Authors: DiPirro, M, Tuttle, J, Hait, T, Shirron, P
Format: Conference Proceeding
Language:English
Subjects:
EMISSIVITY
Ground support equipment
HEAT
HEATING LOAD
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
LEAKS
Loads (forces)
RADIOMETERS
Space telescopes
TELESCOPES
TESTING
Vacuum chambers
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Description
Summary: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.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4860690