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Titles:
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Jaworske, D. A., "Correlation of Predicted
and Observed Optical Properties of Multi-Layer Thermal Control Coatings",
Thin Solid Films 332, pp.30-33, 1998.
Thermal control coatings on spacecraft will be increasingly
important as spacecraft grow smaller and more compact. New thermal
control coatings will be needed to meet the demanding requirements of
next generation spacecraft. Computer programs are now available to
design optical coatings, and one
such program was used to design several thermal control coatings
consisting
of alternating layers of WO3 and SiO2. The
coatings
were subsequently manufactured with electron beam evaporation and
characterized with both optical and thermal techniques. Optical data
were collected in
both the visible region of the spectrum and the infrared. Solar
absorptance
values were predicted in the range of 0.177-0.196 and were observed in
the
range of 0.155-0.228. Infrared emittance values were predicted in the
range
of 0.074-0.083 and were observed optically in the range 0.048-0.093 and
calorimetrically in the range of 0.069-0.100.
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