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Estimation of the end-of-life optical properties of Z-93 thermal control coating for the Space Station FreedomThis paper describes an approach to estimating the 30-year end-of-life optical properties of Z-93 white, thermal control coating on the Space Station Freedom. Estimations of the 30-year end-of-life properties of thermal control coatings are necessary for sizing the thermal radiators. The available flight and ground data and computer generated contamination models are used to predict the effects of ground handling, exposure to UV radiation, and on-orbit contamination on the optical properties of Z-93. The solar absorptance for portions of the thermal control system radiator surfaces is predicted to change from 0.15 to 0.36 after 30 years of low earth orbit environmental exposure. The infrared emittance is predicted to change from 0.92 to 0.90.
Document ID
19920048673
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hasegawa, Mark M.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Babel, Hank W.
(McDonnell Douglas Space Systems Co. Huntington Beach, CA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
Optics
Report/Patent Number
AIAA PAPER 92-2168
Meeting Information
Meeting: AIAA Materials Specialist Conference
Location: Dallas, TX
Country: United States
Start Date: April 16, 1992
End Date: April 17, 1992
Accession Number
92A31297
Funding Number(s)
CONTRACT_GRANT: NAS9-18200
Distribution Limits
Public
Copyright
Other

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