Abstract

This paper presents a physical model of a passive cryogenic system (a radiative cooler) for cooling a detector equipped with a sunshade to protect it from the sun when it is mounted on a geostationary spacecraft. The results of a numerical simulation of heat transport in the cooler are given. It is shown that the sunshade has an insignificant effect on the cooling throughput of the system and the detector temperature. Values of the thermal fluxes are given that characterize the heat release of the sunshade radiators into outer space and the interaction of the sunshade with the detector radiator.

© 2010 Optical Society of America

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