Solid propellant dual pulse rocket motor loaded case and ignition system and method of manufacture
AssigneeThiokol Corporation
InventorsDaniel C. Dombrowski, Thomas J. Frey, Andrew G. Nevrincean, Clyde E. Carr, Jr.
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Abstract
A solid propellant dual pulse rocket motor has a pressure vessel containing two pulse grains separated by a barrier insulator. An igniter assembly disposed at a fore end of the pressure vessel selectively ignites a first pulse grain from a central channel within the grain. The igniter assembly also ignites a second pulse grain by ejecting hot combustion gases onto the fore end of the grain. Using such an ignition arrangement, a dual pulse rocket motor may be constructed using standard off-the-shelf ignition components.
Claims11
A solid propellant dual phase motor comprising:
- a pressure vessel having an aft opening for release of propellant materials therefrom;
- a first pulse grain disposed in an aft portion of said pressure vessel;
- a second pulse grain disposed in a fore portion of said pressure vessel;
- and
- igniter means disposed in said fore portion of said pressure vessel for selectively igniting said first pulse grain and said second pulse grain said igniter means comprising a first pulse igniter disposed proximate said first pulse grain and a second pulse igniter disposed proximate said second pulse grain, said second pulse igniter comprising an igniter closure having torodial surfaces disposed therein which define an igniter chamber, said igniter closure comprising at least one nozzle port providing a path from said igniter chamber to said second pulse grain.
A solid propellant dual phase motor comprising:
- a pressure vessel having an aft opening for release of propellant material therefrom;
- a first pulse grain disposed in an aft portion of said pressure vessel;
- a second pulse grain disposed in a fore portion of said pressure vessel, said first and second pulse grains each having a surface disposed therein which cooperatively define an ignition cavity;
- and
- igniter means disposed in said ignition cavity for selectively igniting said first pulse grain and said second pulse grain said igniter means comprising a first pulse igniter disposed proximate said first pulse grain and a second pulse igniter disposed proximate said second pulse grain, said second pulse igniter comprising an igniter closure having torodial surfaces disposed therein which define an igniter chamber, said igniter closure comprising at least one nozzle port providing a path from said igniter chamber to said second pulse grain.
Dependencies are inferred from the claim text.