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Flight Test Results for the HST Orbital Systems Test (HOST) Capillary Pump Loop Cooling System
Technical Paper
1999-01-1980
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The Near Infrared Camera and Multi Object Spectrometer (NICMOS) was installed in the Hubble Space Telescope (HST) in February 1997. Shortly thereafter, the instrument experienced a thermal short in its solid nitrogen dewar system which will significantly shorten the instrument’s useful life. A reverse Brayton cycle mechanical refrigerator will be installed during the Third Servicing Mission (SM3) to provide cooling for the instrument, and thereby extend its operations. A Capillary Pump Loop (CPL) and radiator system was designed, built and tested to remove up to 500 watts of heat from the mechanical cryocooler and its associated electronics. The HST Orbital Systems Test (HOST) platform was flown on the Space Shuttle Discovery (STS-95) as a flight demonstration of the cryocooler system, CPL control electronics, and the CPL/Radiator. This paper will present the flight test results and thermal performance of the CPL system in detail.
Authors
Citation
Buchko, M., Kaylor, M., Kroliczek, E., and Ottenstein, L., "Flight Test Results for the HST Orbital Systems Test (HOST) Capillary Pump Loop Cooling System," SAE Technical Paper 1999-01-1980, 1999, https://doi.org/10.4271/1999-01-1980.Also In
References
- Thompson, R. Near Infrared Camera and Multiobject Spectrometer (NICMOS): Proc. SPIE 2209 319 330 09/1994
- Nellis, G., Reverse Brayton Cooler for NIC-MOS Proc. 10 th International Cryocooler Conference, Monterey, CA, May 1998
- McIntosh, R., Kaylor, M. Buchko, M. Kroliczek, E. Smith, R. A Capillary Pump Loop Cooling System for the NICMOS Instrument SAE Paper No. 981814 1998
- Butler, D., Hoang, T. The Enhanced Capillary Pumped Loop Flight Experiment - A Prototype of the EOS Platform Thermal Control System AIAA Paper No.91-1377 1991