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Thermal Vacuum Test Performance of the Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) Variable Conductance Heat Pipe Assembly
Technical Paper
2003-01-2459
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The Variable Conductance Heat Pipe (VCHP) Assembly of the HST Wide Field Camera 3 was subjected to thermal vacuum (T/V) 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.
Authors
Citation
Cleveland, P., Buchko, M., Stavely, R., and Pham, B., "Thermal Vacuum Test Performance of the Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) Variable Conductance Heat Pipe Assembly," SAE Technical Paper 2003-01-2459, 2003, https://doi.org/10.4271/2003-01-2459.Also In
References
- Work Order Authorization (WOA) #10564 “VCHP Thermal Vacuum Test Preparation and Performance” May 17 2002
- Work Order Authorization (WOA) #10370 “Fabricate Test WFC3 VCHP TV Test MLI Blankets” April 2 2002
- “HST Wide Field Camera 3 (WFC3) Variable Conductance Heat Pipe (VCHP) Performance Thermal Vacuum Test Plan/Procedure” Document No. P-442-3022, Rev. A June 2002 Cleveland P.