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Improved ablative materials for the ASRM nozzleRayon precursor carbon-cloth phenolic was developed more than 30 years ago and is used in most nozzles today including the Poseidon, Trident, Peacekeeper, Small ICBM, Space Shuttle, and numerous tactical and space systems. Specifications and manufacturing controls were placed on these materials and, once qualified, a no-change policy was instituted. The current material is acceptable; however, prepreg variability does not always accommodate the requirements of automation. The advanced solid rocket motor requires material with less variability for automated manufacturing. An advanced solid rocket motor materials team, composed of NASA, Thiokol, Aerojet, SRI, and Lockheed specialists, along with materials suppliers ICI Fiberite/Polycarbon, BP Chemicals/Hitco, and Amoco, embarked on a program to improve the current materials. The program consisted of heat treatment studies and standard and low-density material improvements evaluation. Improvements evaluated included fiber/fabric heat treatments, weave variations, resin application methods, process controls, and monitors.
Document ID
19920066091
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Canfield, A.
(Thiokol Corp. Brigham City, UT, United States)
Clinton, R. G.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Armour, W.
(Aerojet Folsom, CA, United States)
Koenig, J.
(Southern Research Institute Birmingham, AL, United States)
Date Acquired
August 15, 2013
Publication Date
July 1, 1992
Subject Category
Composite Materials
Report/Patent Number
AIAA PAPER 92-3057
Accession Number
92A48715
Distribution Limits
Public
Copyright
Other

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