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SRB thermal curtain design supportThe objective of the program during this time period was to evaluate candidate materials that could be used to design an improved Solid Rocket Motor (SRM) Aft Skirt Thermal Curtain (ASTC). The ASTC is a flexible, high temperature, cloth and insulation composite that is used to protect the hardware located inside the aft skirt of the shuttle solid rocket booster. The current ASTC consists of nine layers of insulating materials and is 2.58 inches thick. The ASTC is made up of twenty four segments. The segments are hand sewn together during installation on the aft skirt. The weight of the current ASTC is approximated at about six hundred pounds. This weight does not include the weight of the mounting hardware and ties required to install the twenty four ASTC segments (which is significant). The current effort entailed measuring the thermophysical properties of six candidate materials (quartz, S glass, and Kevlar woven into nominal 0.25 inch thick layers by angle interlock and polar-weave) and then using these properties in a computer program to predict the thermal performance of various curtain configurations subjected to an SRM heat flux.
Document ID
19940012650
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Dixon, Carl A. (Southern Research Inst. Birmingham, AL, United States)
Date Acquired
September 6, 2013
Publication Date
December 1, 1991
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
NAS 1.26:193857
SRI-MME-92-564-7079
NASA-CR-193857
Accession Number
94N17123
Funding Number(s)
CONTRACT_GRANT: NAS8-38261
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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