[PDF] Analytic And Experimental Evaluation Of Shadow Shields And Their Support Members For Thermal Control Of Space Vehicles eBook

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Experimental Studies on Shadow Shields for Thermal Protection of Cryogenic Tanks in Space

Richard H. Knoll
Experimental Studies on Shadow Shields for Thermal Protection of Cryogenic Tanks in Space by Richard H. Knoll PDF

Author : Richard H. Knoll
Publisher :
Page : 76 pages
File Size : 50,32 MB
Release : 1968
Category : Space vehicles
ISBN :

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Experiments were performed on multiple flat-disk shadow shields to determine the effects of shield spacing number, emissivity, lateral conductance, and targeting (high-emissivity coatings on annular rings of shields) on thermal performance. The experimental data, in general, agreed closely with an analytical model which assumed diffuse surfaces with nonuniform radiosity. A shadow-shield system for a hypothetical space vehicle was designed, scaled down, and tested. Results demonstrated: (1) a lightweight method of shield construction; (2) shield-support interactions: and (3) reduction of support heat leaks by shield location, attachment methods, and the use of high-emissivity coatings.