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In a high-vacuum environment, some materials of the satellite outgas. Theses vapours or contaminants deposite theirselves on the thermal control surfaces, and with the action of the ultraviolet radiation, they get darkness and modify the thermooptical properties of the surfaces. The objective of this research was to verify experimentally the action of the ultraviolet radiation in the physical aspects of darkness of Optical Solar Reflector’s (OSR) surface, used as a tool for satellites’ thermal control. In addition, the study verified the relation between the OSR’s surface temperature and the permanence of the contamination’s coating deposited.

Testes de degradação por foto deposição de um refletor solar óptico para controle térmico de satélites