Powder barrier bonding technique
First Claim
1. In a method for loading a rocket motor which comprises casting and curing a solid propellant within a combustion chamber which is lined with a layer of cured silicone rubber insulator material, the improvement residing in casting and curing a barrier layer on said layer of insulator material before casting and curing the propellant grain to prevent materials in the propellant grain from migrating into the insulator layer as the propellant grain cures.
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Accused Products
Abstract
A barrier layer made up of a suitable powder interspersed within either a trix of cured propellant binder or a matrix of silicone rubber is interposed between a silicone rubber insulator and a solid propellant grain in a rocket motor to prevent curatives from migrating from the propellant into the silicone rubber layer when the propellant is cast.
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Citations
6 Claims
- 1. In a method for loading a rocket motor which comprises casting and curing a solid propellant within a combustion chamber which is lined with a layer of cured silicone rubber insulator material, the improvement residing in casting and curing a barrier layer on said layer of insulator material before casting and curing the propellant grain to prevent materials in the propellant grain from migrating into the insulator layer as the propellant grain cures.
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5. A method for providing a barrier layer to substantially prevent migration of a curing agent from a solid propellant grain into an insulation layer comprising the steps of:
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1. applying an uncured blend of silicone rubber and a powder onto the cured insulation; and 2. allowing said barrier layer to cure. - View Dependent Claims (6)
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Specification