A control system for a rescue hoist attached to an aircraft is disclosed. In various embodiments, the control system includes a first bus extending between a control module of the rescue hoist and a control input device; and a second bus extending between the control module of the rescue hoist and the control input device. The first bus is configured to transmit a first signal from the control input device to the control module and the second bus is configured to transmit a second signal from the control input device to the control module, both the first signal and the second signal being generated by the control input device in response to a manipulation of the control input device.

An arm restraint assembly for an ejection seat may comprise a primary arm configured to pivot about a primary arm pivot joint, a first cable portion coupled to the primary arm, and an attenuator coupled to the first cable portion. The first cable portion may be configured to pivot the primary arm about the primary arm pivot joint. The attenuator may include a housing and a plunger having a head located in the housing. The head of the plunger may be biased toward a first end of the housing.

An arm restraint assembly for an ejection seat may comprise a primary arm configured to pivot about a primary arm pivot joint, a first cable portion coupled to the primary arm, and an attenuator coupled to the first cable portion. The first cable portion may be configured to pivot the primary arm about the primary arm pivot joint. The attenuator may include a housing and a plunger having a head located in the housing. The head of the plunger may be biased toward a first end of the housing.

A method may comprise: receiving, via a processor, an ejection initiation signal indicating an ejection event for an ejection seat of an aircraft has been initiated; commanding, via the processor, a retraction mechanism to retract a cuff assembly towards a seat back of the ejection seat in response to the ejection initiation signal; and commanding, via the processor, a guillotine to sever a cord coupled to the cuff assembly.

A method may comprise: receiving, via a processor, an ejection initiation signal indicating an ejection event for an ejection seat of an aircraft has been initiated; commanding, via the processor, a retraction mechanism to retract a cuff assembly towards a seat back of the ejection seat in response to the ejection initiation signal; and commanding, via the processor, a guillotine to sever a cord coupled to the cuff assembly.

An electronic release system for an aircraft ejection system may comprise: a controller; a plurality of release devices in operable communication with the controller; a plurality of pins, each pin in the plurality of pins operably coupled to a release device in the plurality of release devices, the controller configured to: receive an indication that an ejection event from an aircraft has been initiated, command activation of the plurality of release devices, and in response to commanding the activation, releasing the plurality of pins from an ejection seat.

An electronic release system for an aircraft ejection system may comprise: a controller; a plurality of release devices in operable communication with the controller; a plurality of pins, each pin in the plurality of pins operably coupled to a release device in the plurality of release devices, the controller configured to: receive an indication that an ejection event from an aircraft has been initiated, command activation of the plurality of release devices, and in response to commanding the activation, releasing the plurality of pins from an ejection seat.

A mechanically actuated cargo restraint system for a vehicle includes a rotatable reel in a frame, first and second flexible tethers, and a mechanical device. The first flexible tether has a first end coupled to the rotatable reel and a second end capable of being coupled to a cargo item, the first flexible tether is windable around the rotatable reel. The mechanical device includes a pawl and cog that are movable with respect to each other, the pawl coupled to the rotatable reel for rotatable movement therewith. Movement of a cargo item attached to the first flexible tether that causes the first flexible tether to move in an unwinding direction on the rotatable reel causes movement of the pawl-containing member relative to the cog. Velocity in the unwinding direction such as that encountered during a crash or free-fall engages the pawl into the cog, thereby inhibiting movement of the first flexible tether in an unwinding direction on the rotatable reel.

A mechanically actuated cargo restraint system for a vehicle includes a rotatable reel in a frame, first and second flexible tethers, and a mechanical device. The first flexible tether has a first end coupled to the rotatable reel and a second end capable of being coupled to a cargo item, the first flexible tether is windable around the rotatable reel. The mechanical device includes a pawl and cog that are movable with respect to each other, the pawl coupled to the rotatable reel for rotatable movement therewith. Movement of a cargo item attached to the first flexible tether that causes the first flexible tether to move in an unwinding direction on the rotatable reel causes movement of the pawl-containing member relative to the cog. Velocity in the unwinding direction such as that encountered during a crash or free-fall engages the pawl into the cog, thereby inhibiting movement of the first flexible tether in an unwinding direction on the rotatable reel.

In an illustrative embodiment, a seat is oriented at an oblique angle with respect to a centerline of an aircraft fuselage, the seat having an Aircraft Passenger Restraint System (APRS) with a pre-tensioner and integral retractable shoulder and seat belt webbing. In an illustrative example, the ARPS may be a three-point restraint to control a seat occupant's upper body, head and torso area. In some embodiments, the ARPS may further control the forces on the lower spine and torso. In some applications, the ARPS may operate to control the Head Injury Criteria (HIC) levels for the seat occupant's head, as well as the neck twist and upper spinal forces, to meet aircraft certification requirements imposed by the Federal Aviation Administration (FAA) and/or European Aviation Safety Agency (EASA). In response to a deceleration event, the ARPS may rapidly retract the belt webbing to substantially remove slack.