Thermal Vacuum Test Performance of the Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) Variable Conductance Heat Pipe Assembly | Zendy

Paul Cleveland | Zendy; Matthew T. Buchko | Zendy; Richard Stavely | Zendy; Bruce Thai Pham | Zendy

Open Access

Thermal Vacuum Test Performance of the Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) Variable Conductance Heat Pipe Assembly

Author(s) -

Paul Cleveland,

Matthew T. Buchko,

Richard Stavely,

Bruce Thai Pham

Publication year - 2003

Publication title -

sae technical papers on cd-rom/sae technical paper series

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.295

H-Index - 107

eISSN - 1083-4958

pISSN - 0148-7191

DOI - 10.4271/2003-01-2459

Subject(s) - heat pipe , radiator (engine cooling) , temperature control , test bench , temperature cycling , orbit (dynamics) , thermal resistance , optics , thermal , aerospace engineering , mechanical engineering , materials science , heat transfer , physics , engineering , mechanics , meteorology

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.

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