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CPHTS Hardware Development for the EOS AM Spacecraft Instruments
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English
Abstract
NASA's Earth Observing System (EOS) Program will place a series of unmanned polar-orbiting spacecraft in low-earth orbit to support a variety of scientific and Earth-observing missions. The EOS AM spacecraft has a requirement for an advanced heat transportation system for thermal energy. A Capillary Pumped Heat Transportation System (CPHTS) using Capillary Pumped Loop (CPL) technology was selected to accommodate the instruments requiring advanced heat transport. The CPHTS is comprised of several major subassemblies: CPL Coldplate for instrument heat transfer interface; Heat Pipe Heat Exchanger (HPHX) used to exchange energy from the CPL loop vapor and the radiator mounted heat pipes; Constant Conductance Heat Pipes (CCHP) used to interface with the HPHX and distribute the over the radiator area; Non-Condensible Gas Trap (NCG Trap) used to remove non-condensible gases from the subcooled CPL liquid returning from the HPHX; and Reservoir used to control liquid inventory and system temperature setpoint. This paper describes the hardware design and development for the Coldplate's, HPHX's, CCHP's, and NCG Traps.
Citation
Kaylor, M., Kroliczek, E., and Fredley, J., "CPHTS Hardware Development for the EOS AM Spacecraft Instruments," SAE Technical Paper 932239, 1993, https://doi.org/10.4271/932239.Also In
References
- Fredley J.E. Accommodations of the EOS AM Instruments Set Using Capillary Pumped Heat Transport Technologyā€¯ SAE 22nd ICES 1992