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Record Details

Record 32 of 23363
Thermal Performance of Composite Flexible Blanket Insulations for Hypersonic Aerospace Vehicles
Author and Affiliation:
Kourtides, Demetrius A.(NASA Ames Research Center, Moffett Field, CA United States)
Abstract: This paper describes the thermal performance of a Composite Flexible Blanket Insulation (C.F.B.I.) considered for potential use as a thermal protection system or thermal insulation for future hypersonic vehicles such as the National Aerospace Plane (N.A.S.P.). Thermophysical properties for these insulations were also measured including the thermal conductivity at various temperatures and pressures and the emissivity of the fabrics used in the flexible insulations. The thermal response of these materials subjected to aeroconvective heating from a plasma arc is also described. Materials tested included two surface variations of the insulations, and similar insulations coated with a Protective Ceramic Coating (P.C.C.). Surface and backface temperatures were measured in the flexible insulations and on Fibrous Refractory Composite Insulation (F.R.C.I.) used as a calibration model. The uncoated flexible insulations exhibited good thermal performance up to 35 W/sq cm. The use of a P.C.C. to protect these insulations at higher heating rates is described. The results from a computerized thermal analysis model describing thermal response of those materials subjected to the plasma arc conditions are included. Thermal and optical properties were determined including thermal conductivity for the rigid and flexible insulations and emissivity for the insulation fabrics. These properties were utilized to calculate the thermal performance of the rigid and flexible insulations at the maximum heating rate.
Publication Date: Jan 01, 1993
Document ID:
20000024792
(Acquired Mar 17, 2000)
Subject Category: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
Document Type: Reprint
Publication Information: Composite Engineering (ISSN 0961-9526); Volume 3; Nos. 7-8; 805-813
Publisher Information: Pergamon Press Ltd., Unknown
Financial Sponsor: NASA Ames Research Center; Moffett Field, CA United States
Organization Source: NASA Ames Research Center; Moffett Field, CA United States
Description: 9p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: TEMPERATURE EFFECTS; THERMAL INSULATION; REFRACTORY COATINGS; CERAMIC COATINGS; FIBER COMPOSITES; THERMAL CONDUCTIVITY; THERMAL PROTECTION; SURFACE TEMPERATURE; TEMPERATURE PROFILES; THERMAL ANALYSIS; THERMOPHYSICAL PROPERTIES; SILICON CARBIDES; CERAMIC FIBERS; COMPUTER TECHNIQUES; PLASMA JETS; CONVECTIVE HEAT TRANSFER
Availability Source: Other Sources
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