A system for automatic optimization of an ejection system for an aircraft includes the ejection system having a plurality of adjustable settings. The system further includes a sensor configured to detect weight data corresponding to a weight of a user of the ejection system. The system further includes a controller coupled to the ejection system and to the sensor and configured to adjust at least one of the plurality of the adjustable settings of the ejection system based on the weight data.

Sleep systems for aircraft are disclosed. An example sleep system includes a divider having a plurality of panels, each panel defining a pocket, and a lateral sleep apparatus positioned adjacent a seat, the lateral sleep apparatus to be positioned at least partially in the pocket of the panel.

A headrest for a vehicle seat, comprising a support configured to receive and support the head of a seat occupant, and, connected to said support, at least one speaker system comprising: a speaker unit comprising a loudspeaker received in an airtight housing, a guide system for guiding the speaker unit relative to the support of the headrest, said guide system being configured so that the speaker unit can transition from a first usage position to a second usage position, and vice versa, the transition from the first usage position to the second usage position, and vice versa, corresponding to a movement combining a translation of the speaker unit and a rotation of the speaker unit.

A headrest for a vehicle seat, comprising a support configured to receive and support the head of a seat occupant, and, connected to said support, at least one speaker system comprising: a speaker unit comprising a loudspeaker received in an airtight housing, a guide system for guiding the speaker unit relative to the support of the headrest, said guide system being configured so that the speaker unit can transition from a first usage position to a second usage position, and vice versa, the transition from the first usage position to the second usage position, and vice versa, corresponding to a movement combining a translation of the speaker unit and a rotation of the speaker unit.

Clutch-based adjustment mechanism for motorized multi-way seat adjustment An adjustment mechanism comprises multiple screw shafts (111, 112, 113) and a motor (150) for driving the screw shafts. Further, the adjustment mechanism comprises a clutch mechanism (160) for selectively engaging the motor (150) with one or more of the screw shafts (111, 112, 113). A rotation of one or more of the screw shafts (111, 12, 113) caused by the motor (150) translates into adjustment of the seat according to a first degree of freedom. A rotation of one or more others of the screw shafts (111, 12, 113) caused by the motor (150) translates into adjustment of the seat according to a second degree of freedom.

An adjustment mechanism for a seat comprises at least one screw shaft (111, 112) and a motor for driving the at least one screw shaft (111, 112). Further, the adjustment mechanism comprises at least one nut element (121, 122) engaged with the at least one screw shaft (121, 122) in such a way that a rotation of the at least one screw shaft (111, 112) caused by the motor translates into a linear motion of the at least one nut element (121, 122). In a first range of the linear motion of the at least one nut element (121, 122) the linear motion translates into adjustment of the seat according to a first degree of freedom, and in a second range of the linear motion of the at least one nut element (121, 122) the linear motion translates into adjustment of the seat according to a second degree of freedom.

A headrest may be fixed relative to a seat or a bank of seats in a vehicle and can provide multiple stages of deformation in response to a collision event. The headrest can include a resilient member that deforms in response to a first force caused by the collision event. The headrest can also include a frame that deforms in a first manner in response to a second force greater than the first force and in a second manner in response to a third force greater than the second force. Such a headrest can provide improved impact mitigation for occupants, regardless of height and/or weight such that occupants ranging from the 5.sup.th to 95.sup.th percentile in height and/or weight are afforded similar impact mitigation despite a fixed headrest structure. In some examples, multiple such headrests may be conjoined.

An upper body support system for a vehicle seat provides support of a person's head and body via a body portion that extends down along the seat back rest from a stabilizer portion that extends over the top of the seat. The body portion may extend down a substantial portion of the back rest to provide support of the person's upper body. The bottom end of the support is secured by a base strap that is configured to form an anchor loop that is couple with a seat anchor of the vehicle seat. The top of the support is secured to a pair of head rest posts by a head rest strap assembly. This arrangement of securing the top and bottom of the support provides effective stability for a person to lean there against and enables the body portion to be configured in an offset angle from vertical for comfort.

An upper body support system for a vehicle seat provides support of a person's head and body via a body portion that extends down along the seat back rest from a stabilizer portion that extends over the top of the seat. The body portion may extend down a substantial portion of the back rest to provide support of the person's upper body. The bottom end of the support is secured by a base strap that is configured to form an anchor loop that is couple with a seat anchor of the vehicle seat. The top of the support is secured to a pair of head rest posts by a head rest strap assembly. This arrangement of securing the top and bottom of the support provides effective stability for a person to lean there against and enables the body portion to be configured in an offset angle from vertical for comfort.

An apparatus is disclosed. The apparatus has a housing forming a housing cavity, an inflatable assembly attached to the housing, and a member attached to the inflatable assembly. When the inflatable assembly is deflated, the inflatable assembly is configured to be disposed in the housing cavity with the housing cavity covered by the member. When the inflatable assembly is inflated, the inflatable assembly extends away from the housing, the inflated inflatable assembly disposed between the housing and the member.