Publication Date:
2019-07-13
Description:
The Variable Conductance Heat Pipe (VCHP) Assembly of the HST Wide Field Camera 3 was subjected to thermal vacuum (TN) environmental testing. The test program included both maximum and minimum environments as well as simulated on-orbit cycling. Elements of the VCHP assembly included a VCHP, an optical bench cold plate with an imbedded constant conductance heat pipe, and a VCHP reservoir radiator with a proportionally controlled heater. The purpose of the test was to characterize and demonstrate the assembly s ability to control the temperature of the cold plate, which provides a stable thermal environment for the instrument s optical bench. This paper discusses the VCHP Assembly control performance and control authority during the dynamic hot and cold 90-minute orbit cycling test phases.
Keywords:
Quality Assurance and Reliability
Type:
SAE-2003-01-2459
,
International Conference on Environmental Systems; Jul 07, 2003 - Jul 10, 2003; Vancouver, British Columbia; Canada
Format:
application/pdf
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