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Reflective Coating on Fibrous Insulation for Reduced Heat TransferRadiative heat transfer through fibrous insulation used in thermal protection systems (TPS) is significant at high temperatures (1200 C). Decreasing the radiative heat transfer through the fibrous insulation can thus have a major impact on the insulating ability of the TPS. Reflective coatings applied directly to the individual fibers in fibrous insulation should decrease the radiative heat transfer leading to an insulation with decreased effective thermal conductivity. Coatings with high infrared reflectance have been developed using sol-gel techniques. Using this technique, uniform coatings can be applied to fibrous insulation without an appreciable increase in insulation weight or density. Scanning electron microscopy, Fourier Transform infrared spectroscopy, and ellipsometry have been performed to evaluate coating performance.
Document ID
19970031799
Acquisition Source
Langley Research Center
Document Type
Contractor Report (CR)
Authors
Hass, Derek D.
(Analytical Services and Materials, Inc. Hampton, VA United States)
Prasad, B. Durga
(Analytical Services and Materials, Inc. Hampton, VA United States)
Glass, David E.
(Analytical Services and Materials, Inc. Hampton, VA United States)
Wiedemann, Karl E.
(Analytical Services and Materials, Inc. Hampton, VA United States)
Date Acquired
September 6, 2013
Publication Date
August 1, 1997
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
NAS 1.26:201733
AS/M-MM6-97-01
NASA-CR-201733
Accession Number
97N28880
Funding Number(s)
PROJECT: RTOP 242-33-01
CONTRACT_GRANT: NAS1-19708
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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