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US 9,429,104 B2Granted
Systems and methods for casting hybrid rocket motor fuel grains
AssigneeThe Aerospace Corporation
InventorJerome Keith Fuller
Life of this patent
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Abstract
Embodiments of the invention relate to systems and methods for casting hybrid rocket motor fuel grains. In one embodiment, a method for casting a rocket motor fuel grain can be provided. The method can include providing a positive image of a port made from at least one material. The method can further include disposing at least one fuel material around at least a portion of the positive image of the port. Further, the method can include removing the at least one material, wherein a negative image of the port is formed in the at least one fuel material.
Claims20
A method comprising:
- casting a rocket motor fuel grain, the casting method comprising:
- providing a rocket motor fuel grain mold cast;
- generating a positive image of a port made from at least one material in at least a portion of the rocket motor fuel grain mold cast, wherein a rapid prototyping device is used to generate at least a portion of the positive image;
- and
- disposing within the rocket motor fuel grain cast at least one fuel material around at least a portion of the positive image of the port.
2 more elements
A method comprising:
- casting a rocket motor fuel grain, the casting method comprising:
- providing a rocket motor fuel grain mold cast;
- providing, in at least a portion of the rocket motor fuel grain mold cast, a positive image of a helical-shaped port made from at least one material comprising an oxidizer, wherein a rapid prototyping device is used to provide at least a portion of the positive image;
- and
- disposing within the rocket motor fuel grain cast at least one fuel material around at least a portion of the positive image of the helical-shaped port.
2 more elements
A method comprising:
- casting a rocket motor fuel grain, the casting method comprising:
- providing a rocket motor fuel grain cast;
- generating, in at least a portion of the rocket motor fuel grain mold cast, a positive image of a port made from at least one material comprising a soluble polymer, wherein a rapid prototyping device is used to provide at least a portion of the positive image;
- disposing, in the rocket motor fuel grain cast, at least one fuel material around at least a portion of the positive image of the port;
- and
- removing the at least one material by changing a state of the at least one material;
- and
- curing the at least one fuel material to form a negative image of the port in the cured fuel material.
5 more elements
Dependencies are inferred from the claim text.