This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Thermal Control Subsystem Design for the EOS Thermal Infrared Radiometer
Annotation ability available
Sector:
Language:
English
Abstract
The Thermal Infrared Radiometer (TIR) is part of the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) complement of instruments to be flown on NASA's Earth Observing System (EOS) spacecraft. ASTER'S function is to measure atmospheric and terrestrial optical and thermal emissions. TIR provides coverage of the long wave emissions and utilizes several independent thermal control elements to support the exacting thermal requirements of the optical train and electronic assemblies. The widely differing temperature ranges and narrow control bands of the instrument components dictate the need for a combination of active and passive thermal control techniques. The very low temperature required of the thermal emission detector using a Stirling cycle cooler, contrasts with the moderate temperatures needed by the optical train and blackbody. These components are cooled by uniquely configured remote radiators and thermostatically controlled heaters. The electronics assemblies and compressor are cooled by rejecting heat into a cold plate via the instrument baseplate. The cold plate is part of a Capillary Pumped Heat Transport System (CPHTS) baselined for instrument thermal control aboard the EOS spacecraft. Heat transport for waste heat removal is achieved by the extensive use of heat pipes which have been selected to meet the individual needs of the components. This paper discusses the thermal control techniques implemented to meet the stringent thermal design constraints of the TIR instrument.
Authors
Citation
Drackett, T. and Zaiki, Y., "Thermal Control Subsystem Design for the EOS Thermal Infrared Radiometer," SAE Technical Paper 932237, 1993, https://doi.org/10.4271/932237.Also In
References
- Fredley J. E. “Accomodation of the EOS AM Instrument Set Using Capillary Pumped Heat Transport/Technology” SAE 22nd International Conference on Environmental Systems Paper No. 921404
- Bond H. E. Benko D. J. Chalmers D. R. Pergament S. D. “Conceptual Design of the Space Station Polar Platform Thermal Control Subsystem” SAE 19th International Conference on Environmental Systems Paper No. 891461
- Ellis W. “The Space Station Active Thermal Control Technical Challenge” AIAA 27th Aerospace Sciences Meeting Paper No. 89-0073