An ejection seat is disclosed comprising a seat back; a headrest assembly mounted to or forming part of the seat back; a pair of head support beams stowable in the headrest assembly, configured to be deployed such that they project forwardly from the headrest assembly, for capturing a seat occupant's head therebetween, and a pair of arm retention curtains, wherein at least part of each arm retention curtain is stowed in a rolled condition, configured such that deploying the head support beams and/or drawing the tethers forward from the seat back unfurls the arm retention curtains.

An ejection seat is disclosed comprising a seat back; a headrest assembly mounted to or forming part of the seat back; a pair of head support beams stowable in the headrest assembly, configured to be deployed such that they project forwardly from the headrest assembly, for capturing a seat occupant's head therebetween, and a pair of arm retention curtains, wherein at least part of each arm retention curtain is stowed in a rolled condition, configured such that deploying the head support beams and/or drawing the tethers forward from the seat back unfurls the arm retention curtains.

An article of manufacture may include a tangible, non-transitory computer-readable storage medium having instructions stored thereon for controlling deployment of aircraft escape and ejection seat subsystems. The instructions, in response to execution by a first sequencer, cause the first sequencer to perform operations which may comprise receiving a power input, determining a seat location and a seat identity of a first ejection seat in which the first sequencer is installed, determining an ejection mode, sending a first deploy command to an escape path clearance subsystem, determining a deployment sequence for a seat rocket catapult subsystem and a plurality of ejection seat subsystems of the first ejection seat based on the seat location, the seat identity, and the ejection mode, sending a second deploy command to the seat rocket catapult subsystem, and sending a series of third deploy commands to the plurality of ejection seat subsystems.

An article of manufacture may include a tangible, non-transitory computer-readable storage medium having instructions stored thereon for controlling deployment of aircraft escape and ejection seat subsystems. The instructions, in response to execution by a first sequencer, cause the first sequencer to perform operations which may comprise receiving a power input, determining a seat location and a seat identity of a first ejection seat in which the first sequencer is installed, determining an ejection mode, sending a first deploy command to an escape path clearance subsystem, determining a deployment sequence for a seat rocket catapult subsystem and a plurality of ejection seat subsystems of the first ejection seat based on the seat location, the seat identity, and the ejection mode, sending a second deploy command to the seat rocket catapult subsystem, and sending a series of third deploy commands to the plurality of ejection seat subsystems.

A system for automatic optimization of an ejection system for an aircraft includes the ejection system having a plurality of adjustable settings and having a plurality of components. The system further includes a connector configured to connect to a component of the plurality of components and having a connector portion that includes information corresponding to a user of the ejection system. The system further includes a controller coupled to the ejection system and configured to adjust at least one of the plurality of the adjustable settings of the ejection system based on the information corresponding to the user of the ejection system.

A system for automatic optimization of an ejection system for an aircraft includes the ejection system having a plurality of adjustable settings and having a plurality of components. The system further includes a connector configured to connect to a component of the plurality of components and having a connector portion that includes information corresponding to a user of the ejection system. The system further includes a controller coupled to the ejection system and configured to adjust at least one of the plurality of the adjustable settings of the ejection system based on the information corresponding to the user of the ejection system.

A system for automatic ejection mode selection may comprise: a first ejection seat configured to receive a first pilot; a second ejection seat configured to receive a second pilot or a non-pilot; a user detection system configured to determine whether the second ejection seat has the second pilot, the non-pilot, or is empty; and a controller configured to adjust an ejection system in response to determining whether the second ejection seat has the second pilot, the non-pilot, or is empty.

A system for automatic ejection mode selection may comprise: a first ejection seat configured to receive a first pilot; a second ejection seat configured to receive a second pilot or a non-pilot; a user detection system configured to determine whether the second ejection seat has the second pilot, the non-pilot, or is empty; and a controller configured to adjust an ejection system in response to determining whether the second ejection seat has the second pilot, the non-pilot, or is empty.

A solid propellant propulsion motor may comprise: a forward propellant grain extending along a longitudinal axis of a motor case between a forward end of the motor case and a first burn inhibitor layer in the motor case; the first burn inhibitor layer disposed axially adjacent to the forward propellant grain; an aft propellant grain disposed axially adjacent to the first burn inhibitor layer; a second burn inhibitor layer disposed axially adjacent to an aft end of the aft propellant grain; and an ablative material layer disposed on a radially inner surface of the aft propellant grain.

A solid propellant propulsion motor may comprise: a forward propellant grain extending along a longitudinal axis of a motor case between a forward end of the motor case and a first burn inhibitor layer in the motor case; the first burn inhibitor layer disposed axially adjacent to the forward propellant grain; an aft propellant grain disposed axially adjacent to the first burn inhibitor layer; a second burn inhibitor layer disposed axially adjacent to an aft end of the aft propellant grain; and an ablative material layer disposed on a radially inner surface of the aft propellant grain.