An arm restraint assembly for an ejection seat may comprise a primary arm configured to pivot about a primary arm pivot joint, and a secondary arm configured to pivot about a secondary arm pivot joint. A primary airfoil structure may be coupled to the primary arm assembly. The primary airfoil structure may include an airfoil body.

An arm restraint assembly for an ejection seat may comprise a primary arm configured to pivot about a primary arm pivot joint, and a secondary arm configured to pivot about a secondary arm pivot joint. A primary airfoil structure may be coupled to the primary arm assembly. The primary airfoil structure may include an airfoil body.

An ejection seat is disclosed. In various embodiments, the ejection seat includes a seat frame having a seat-back and a seat-pan adapted to support an occupant and a propulsion system configured to propel the ejection seat from an aircraft; and a backstop configured to deploy laterally outward from the seat-back to form a forward-facing surface, the backstop including a net structure and an aerodynamic control mechanism incorporated into the net structure.

An ejection seat is disclosed. In various embodiments, the ejection seat includes a seat frame having a seat-back and a seat-pan adapted to support an occupant and a propulsion system configured to propel the ejection seat from an aircraft; and a backstop configured to deploy laterally outward from the seat-back to form a forward-facing surface, the backstop including a net structure and an aerodynamic control mechanism incorporated into the net structure.

An ejection seat is disclosed. In various embodiments, the ejection seat includes a seat frame having a seat-back and a seat-pan adapted to support an occupant, the ejection seat further comprising a propulsion system configured to propel the ejection seat from an aircraft; and a backstop configured to deploy laterally outward from the seat-back to form a forward-facing surface, the backstop including a lower support arm and an upper support arm, the lower support arm and the upper support arm configured to telescope upon deployment of the ejection seat.

An ejection seat is disclosed. In various embodiments, the ejection seat includes a seat frame having a seat-back and a seat-pan adapted to support an occupant, the ejection seat further comprising a propulsion system configured to propel the ejection seat from an aircraft; and a backstop configured to deploy laterally outward from the seat-back to form a forward-facing surface, the backstop including a lower support arm and an upper support arm, the lower support arm and the upper support arm configured to telescope upon deployment of the ejection seat.

In order to provide an aircraft seat unit and an aircraft seat unit assembly capable of meeting various passenger requirements, an aircraft seat unit is provided with a seat portion including a first buttocks support layer and a second buttocks support layer, and a backrest portion. The seat portion is configured to be capable of changing states between a short seat portion state and a long seat portion state. The first buttocks support layer configured to support the buttocks of a passenger in the short seat portion state is harder than the second buttocks support layer configured to support the buttocks of the passenger in the long seat portion state.

An adjustable leg restraint for an ejection seat may be configured to translate between an extended state and a nonextended state. The adjustable leg restraint may include a leg located proximate a side panel of the ejection seat. An extension flange may be coupled to the leg guard. The extension flange may be configured to translate the leg guard relative to the side panel of the ejection seat.

An adjustable leg restraint for an ejection seat may be configured to translate between an extended state and a nonextended state. The adjustable leg restraint may include a leg located proximate a side panel of the ejection seat. An extension flange may be coupled to the leg guard. The extension flange may be configured to translate the leg guard relative to the side panel of the ejection seat.

The present disclosure provides an arm catcher system for an aircraft ejection seat. The arm catcher system may comprise a first support member configured to rotate in a first direction to be deployed in response to an ejection event and a first persistent locking mechanism coupled to the first support member, wherein the first persistent locking mechanism is configured to allow the support member to rotate in the first direction and configured to prevent the first support member from rotating in a second direction opposite the first direction.