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Investigation of the Mechanical Performance of Compliant Thermal BarriersCompliant thermal barriers play a pivotal role in the thermal protection systems of advanced aerospace vehicles. Both the thermal properties and mechanical performance of these barriers are critical in determining their successful implementation. Due to the custom nature of many thermal barriers, designers of advanced spacecraft have little guidance as to the design, selection, and implementation of these elements. As part of an effort to develop a more fundamental understanding of the interrelationship between thermal barrier design and performance, mechanical testing of thermal barriers was conducted. Two different types of thermal barriers with several core insulation density levels ranging from 62 to 141 kg/cu m were investigated. Room-temperature compression tests were conducted on samples to determine load performance and assess thermal barrier resiliency. Results showed that the loading behavior of these thermal barriers was similar to other porous, low-density, compliant materials, such as elastomeric foams. Additionally, the insulation density level had a significant non-linear impact on the stiffness and peak loads of the thermal barriers. In contrast, neither the thermal barrier type nor the level of insulation density significantly influenced the room-temperature resiliency of the samples.
Document ID
20120000056
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Authors
DeMange, Jeffrey J.
(Toledo Univ. Toledo, OH, United States)
Bott, Robert J.
(Case Western Reserve Univ. Cleveland, OH, United States)
Dunlap, Patrick H.
(NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 25, 2013
Publication Date
December 1, 2011
Subject Category
Nonmetallic Materials
Report/Patent Number
AIAA Paper-2011-2388
NASA/TM-2011-217142
E-17879
Meeting Information
Meeting: 17th International Space Planes and Hypersonic Systems and Technologies Conference
Location: San Francisco, CA
Country: United States
Start Date: April 11, 2011
End Date: April 14, 2011
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
CONTRACT_GRANT: NNC08CA35C
WBS: WBS 644423.06.31.03.08.03
Distribution Limits
Public
Copyright
Public Use Permitted.
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