The Development and Qualification of Thermal Control Coatings for Snap Systems Page: 8 of 75
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CONTENTS a
Page
C. Spectral Emittance System . . . . . . . . . . . . . . . . . . . . . . . . 66
D. Mobile Solar Reflectometer . . . . . . . . . . . . . . . . . . . . . . . 66
E. Mobile Emissivity Inspection System . . . . . . . . . . . . . . . . . . 68
IV. Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . - . . . . . . . 69
References....... .................... ... .. . . . . . . . - 71
TABLES
I. Coating Systems - Absorptance and Emittance Characteristics . . . 15
2. Total Hemispherical Emittance of AI93 . . . . . . . . . . . . . . . . . . . 22
3. In-Pile Emittance Stability Data for AI93 Coating . . . . . . . . . . . .. 34
4. Emittance Stability of Irradiated Specimen No. 1 . . . . . . . . . . . . . 36
5. Thermal Emittance and Solar Absorptance of Fuller Aluminum
Silicone Paint on Aluminum Honeycomb . . . . . . . . . . . . . . . . . . . 51
6. Thermal Emittance and Solar Absorptance of Alodine 1000 on
Aluminum Honeycomb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7. Thermal Emittance and Solar Absorptance of Fuller Acrylic
Lacquer on Aluminum Honeycomb . . . . . . . . . . . . . . . . . . . . . . . 53
FIGURES
1. Thermal Effectiveness of Spacecraft Coatings As A Function of
Solar Absorptance...... ....... ........................... .. 13
2. Emittance of Tailored Coating AI93 . . . . . . . . . . . . . . . . . . . . . . 22
3. Total Hemispherical Emittance vs Temperature (AI93, Specimen
No. 3, Pratt and Whitney Aircraft) . . . . . . . . . . . . . . . . . . . . . . 23
4. A193 Coating on SNAP 2, Radiator-Condenser No. 6 . . . . . . . . . . 25
5. A193 Coating on SNAP 2 Instrument Compartment . . . . . . . . . . . . 26
6. AI93 Coating on SNAP 10A Thermoelectric Pump . . . . . . . . . . . .. 27
7. AI93 Coating on SNAP 10A Thermoelectric Module .. . . . . . . . . .. 28
8. AI93 Coated Panel - Sugar Crystal Pattern At First Bending Mode - 31
9. Capsule Loading for Emittance Measurement. . . . . . . . . . . . . . . 32
10. Effective Emittance of Gold Foil on Stainless Steel . . . . . . . . . . . . 40
11. Effective Emittance Determination Heater Section . . . . . . . . . . . . 41
12. Effective Emittance Determination, Test Section . . . . . . . . . . . . . 41
13. Gold Foil Attachment on SNAP 2 PSM2A System . . . . . . . . . . . . . 43
NAA-SR-9908
4
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Crosby, J. R. The Development and Qualification of Thermal Control Coatings for Snap Systems, report, September 30, 1965; Canoga Park, California. (https://digital.library.unt.edu/ark:/67531/metadc1028869/m1/8/: accessed July 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.