Rocket assembly ablative materials, and method for insulating or thermally protecting a rocket assembly
OwnerKenneth P Wilsoninventor
Life of this patent
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Abstract
A rocket motor ablative material (e.g., an insulation liner, bulk material, or the like) of this invention is formed from, as a precursor of the carbon reinforcement structure, one or more polyarylamides configured as a suitable reinforcing structure, such as a yarn, flock, and/or felt. Aramid yarns can be prepared by twisting/spinning aramid filaments, and/or by carding and yarn-spinning staple aramid fibers. In particular, the insulation may be used, for example, for a rocket motor nozzle or as a rocket motor heat shield subjected to conditions comparable to those of continuous filament viscose rayon.
Claims12
A method for insulating or thermally protecting a rocket motor assembly comprising a rocket motor casing, a propellant, and a nozzle assembly, said process comprising (a) forming a rocket motor ablative material from a prepreg comprising at least one impregnating resin matrix and a reinforcement comprising, as a precursor prior to carbonization, at least one aromatic polyamide and (b) insulating or lining a portion of the rocket motor assembly with the rocket motor ablative material.
A method for insulating or thermally protecting a rocket motor assembly comprising a rocket motor casing, a propellant, and a nozzle assembly, said process comprising (a) forming a rocket motor ablative material from a prepreg comprising at least one impregnating resin matrix and a reinforcement comprising, as a precursor prior to carbonization, at least one poly(meta-arylaramid) and (b) insulating or lining a portion of the rocket motor assembly with the rocket motor ablative material.
Dependencies are inferred from the claim text.