Low density rocket motor insulation
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United States of America Patent
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Issued Date -
May 17, 2007
app pub date -
Nov 14, 2005
filing date -
Nov 14, 2005
priority date (Note) -
Abandoned
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Abstract
A composition of elastomeric insulation is provided. This composition is suitable to be used as a non-asbestos insulation in a solid rocket motor. In this embodiment, an EPDM rubber, a polyaramide fiber, a liquid EPDM rubber and an aluminum hydroxide are used to substitute the hazardous asbestos in traditional insulation materials to prevent environmental contamination. With careful formulation control, density of the composition based on this embodiment can be tailored to lower than 1.0 gm/cm.sup.3. Thus enable the insulation to be especially applicable in the areas of lower ablation rate in a solid rocket motor to reduce tare weight of the rocket motor. Moreover, since no chlorinated organic fire retardant compound is used therein, the additional advantage of low smoke density and low smoke toxicity is exhibited.
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