Preservation of Thermal Control Specular Gold Baffle Surface on the James Webb Space Telescope (JWST) Integrated Science Instrument Module (ISIM) Electronics Compartment (IEC)

被引：1
|
作者：
de Garcia, Kristina Montt [1 ]
Patel, Jignasha [1 ]
Perry, Radford, III [1 ]
机构：
[1] Stinger Ghaffarian Technol, Greenbelt, MD 20770 USA
来源：
OPTICAL SYSTEM CONTAMINATION: EFFECTS, MEASUREMENTS, AND CONTROL 2010 | 2010年 / 7794卷
关键词：
Emittance degradation; contamination; outgassing; NVR contamination; particulate contamination; emittance degradation with contamination; vapor deposited gold emittance degradation; outgassing in vacuum;
D O I：
10.1117/12.864481
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Extremely tight thermal control property degradation allowances on the vapor-deposited, gold-coated IEC baffle surface, made necessary by the cryogenic JWST Observatory operations, dictate tight contamination requirements on adjacent surfaces. Theoretical degradation in emittance with contaminant thickness was calculated. Maximum allowable source outgassing rates were calculated using worst case view factors from source to baffle surface. Tight requirements pushed the team to change the design of the adjacent surfaces to minimize the outgassing sources.
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页数：7
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