Method for preparing propellants by late addition of metallic fuel
AssigneeCordant Technologies Inc.
InventorsRoger R. Hendrickson, R. Scott Hamilton
Life of this patent
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Abstract
There is provided an improved process for preparing a composite propellant comprising (a) a polymeric binder, (b) a bonding agent, (c) a curing agent for the binder, (d) a metallic fuel, and (e) an ammonium salt oxidizer wherein the improvement resides in adding the metallic fuel to the propellant mix after all of the ammonium salt oxidizer has been added to the propellant mix.
Claims18
In a process for preparing a composite propellant comprising (a) a polymeric binder, (b) a bonding agent, (c) a curing agent for the binder, (d) a metallic fuel and (e) an ammonium salt oxidizer, the improvement comprising:
- 1. mixing the polymeric binder and bonding agent;
- 2. admixing a portion of the ammonium salt oxidizer with the mixture produced in step 1 and mixing until substantially all of the ammonia has evolved from the mixture;
- 3. admixing the remainder of the ammonium salt oxidizer with the mixture produced in step 2;
- and
- 4. admixing the metallic fuel with the mixture produced in step 3.
In a process for preparing a composite propellant from constituents comprising (a) polymeric binder, (b) a bonding agent, (c) a curing agent for the binder, (d) a metallic fuel, and (e) an ammonia salt oxidizer, the improvement comprising:
- (i) mixing the polymeric binder and bonding agent;
- (ii) admixing a portion of the ammonia salt oxidizer with the mixture produced in step (i) and mixing until substantially all of the ammonia has evolved from the mixture;
- (iii) add mixing the remainder of the ammonia salt oxidizer with the mixture produced in step (ii);
- (iv) mixing the metallic fuel with the mixture produced in step (iii);
- and
- (v) aging the mixture produced in step (iv).
In a process for preparing a composite propellant from constituents comprising (a) a polymeric binder, (b) a bonding agent, (c) a curing agent for the binder, (d) a metallic fuel and (e) an ammonia salt oxidizer, the improvement comprising:
- (i) mixing the polymeric binder and bonding agent;
- (ii) admixing a portion of the ammonia salt oxidizer with the mixture produced in step (i) and mixing until substantially all of the ammonia has evolved from the mixture;
- (iii) admixing the remainder of the ammonia salt oxidizer with the mixture produced in step (ii);
- (iv) add mixing the metallic fuel with the mixture produced in step (iii);
- and
- (v) add mixing the curing agent with the mixture produced in step (iv).
In process for preparing a composite propellant from ingredients comprising (a) a polymeric binder, (b) a bonding agent, (c) a curing agent for the binder, (d) a metallic fuel and (e) an ammonia salt oxidizer, the improvement comprising adding the metallic fuel to the propellant mix after all of the ammonium salt oxidizer has been added to the propellant mix, said propellant mix containing said bonding agent.
Dependencies are inferred from the claim text.