Abstract
A spacecraft thermal design is performed to satisfy severe demands for allowable temperature and thermal deformations in the spacecraft. The key to the effective thermal design is to build accurate thermal mathematical model for the spacecraft, which can predict temperature variations of the spacecraft on orbit. One of the difficulties in building the accurate model is to identify the characteristics of the thermal contact resistance in joints. In this study, we experimentally study the influence of the contact shapes and the contact pressures in joints on contact thermal resistance of the combination region. We contact two members at each tips under contact loads. We set four different shape types and conduct thermal tests with various contact loads to examine the characteristics of the contact thermal resistance in the different contact conditions. The experimental results indicate that the contact thermal resistance tends to reduce in accordance with the increase of the contact load.
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