Patent ID: 11884408
Assignee: GOODRICH CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 17:
18. A method for manufacturing a solid propellant propulsion motor for an ejection catapult assembly, comprising:
disposing a forward propellant grain at a forward end of a motor case;
disposing a first burn inhibitor layer axially adjacent to the forward propellant grain;
disposing an aft propellant grain axially adjacent to the first burn inhibitor layer;
disposing an ablative material layer on a radially inner surface of the aft propellant grain, wherein the forward propellant grain is configured to provide a higher pressure burn for a shorter duration during combustion relative to the aft propellant grain; and
coupling the motor case to the ejection catapult assembly.