Fabric composite radiation heat transfer study Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/1831cn59j

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  • A Fabric Composite Radiation Heat Transfer Study has been conducted to determine the effective emissivities of specific fabric composite materials. The weave of the fabric and the high strength capability of the individual fiber in combination with the thermal conductivity and chemical stability of specific metallic liner, result in a very efficient light weight heat rejection system. Primary investigation included aluminum, copper, stainless steel and titanium as liner materials, and three different ceramic fabrics - Astroquartz II (a trademark of JPS Co., Slater, SC), Nextel (a trademark of 3M Co., St. Paul, MN) and Nicalon (a trademark of The Nippon Carbon Co., Japan). Experiments showed that fabric composite materials have significantly higher effective emissivities than the bare metallic liner materials. Aluminum and Astroquartz II combination and aluminum and Nextel combination appeared to be the most promising among the tested samples. To simulate deep space the experiment was performed in vacuum where coolant fluid was cirulated at about -10°C. The effective emissivity measurements were conducted at 376 K, 521 K and 573 K. Also high temperature effective emissivity measurements need to be performed.
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  • File scanned at 300 ppi (Monochrome) using Capture Perfect 3.0.82 on a Canon DR-9080C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
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