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Conceptual Design of the Columbus Free Flying Laboratory Resource Module Thermal Control Subsystem
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English
Abstract
The thermal control subsystem of the Columbus Resource Module has to cope with an unusual variety of orbit attitudes, mission modes and configurations.
A short overview over the past RM thermal concepts is given and the present thermal design is described in detail.
A passive concept with extensive use of heatpipes configured as network is baselined. The low available heater power in conjunction with the significant dissipation variations of th NiH2 batteries require there a very effective heat rejection control concept. A new regulation concept has been selected which allows to switch off up to 75% of the battery radiator area by use of Liquid Trap Heatpipes.
The verification concept which does not use system level testing is briefly described.