Abstract: A queue system for a lavatory of an aircraft can include a queue module configured to receive a request from a user input device and to create and/or modify a virtual lavatory queue based on a request hierarchy of the request to position the request in the virtual lavatory queue, and a sensor operatively connected to the queue module and configured to output a state change signal indicative of a user leaving the lavatory. The queue module can be configured to receive the state change signal, iterate the virtual lavatory queue in response to the state change signal, and output a vacancy indicator signal to an indicator device associated with a request that is at a front of the virtual lavatory queue after iterating the virtual lavatory queue to indicate to a user that it is the user's turn in the queue.

Abstract: A composite cylinder assembly may comprise a tube liner and a port. The tube liner may include a closed bottom portion, a substantially cylindrical wall, and a domed head portion defining a neck. The port may comprise an outer diameter configured to fit into an inner diameter of the liner neck. The port may further comprise a lip including an outer diameter that is greater than the inner diameter of the liner neck. The port may also comprise a swage recess having an outer diameter that is less than the inner diameter of the liner neck. The port may be configured to press-fit into the liner neck. The lip may be configured to provide a surface area to weld the port to the liner neck. The swage recess may be configured to provide an area to swage the liner neck to the port.

Abstract: A composite cylinder assembly may comprise a tube liner including a first domed portion defining a first liner neck, a second domed portion defining a second liner neck, and a cylindrical wall. The cylinder assembly may comprise at least one port. The port may comprise an outer diameter configured to fit into an inner diameter of a liner neck and a lip including an outer diameter that is greater than the inner diameter of the liner neck. The port may comprise a swage recess having an outer diameter that is less than the inner diameter of the liner neck and may be configured to press-fit into the liner neck. The lip may be configured to provide a surface area to weld the port to the liner neck. The swage recess may be configured to provide an area to swage the liner neck to the port.

Abstract: The present disclosure provides a polymer matrix composite comprising reinforcement fibres and a (meth)acrylate copolymer matrix formed from a (meth)acrylate monomer and a halogenated flame retardant monomer; a method of preparing the polymer matrix composite, and a composition for use in the method.

Abstract: A first composition is disclosed that includes a fire-resistant thermoplastic resin. The fire-resistant thermoplastic resin includes 1-20 wt % of an aryl phosphate, includes 1-20 wt % of a phosphate polymer, and 60%-98% of a (meth)acrylic polymer, including units from at least one monomer, wherein the monomer is chosen from methyl methacrylate, acrylic acid, methacrylic acid, acrylic acid esters, methacrylic acid esters, acrylonitrile and maleic anhydride. The first composition may further include a fabric or a composite material that is embedded with the fire-resistant thermoplastic resin. In some instances, the aryl-phosphate and the phosphonate polymer synergistically reduce an effective heat of combustion, a peak heat release, or a flame time as compared to a second composition that contains only one of the aryl phosphate or the phosphonate polymer.

Abstract: A method for operating an image segmentation system includes receiving image data from a sensor, detecting a vessel is present in the image data, extracting a region of interest, and classifying the image data based on the region of interest.

Abstract: A sound system includes a seat, a bone conduction system configured to be disposed within the seat, and at least one directional speaker configured to provide audio through directional acoustic delivery contemporaneously with the bone conduction system. The bone conduction system configured to provide audio through bone conduction sound.

Abstract: A lavatory for an aircraft cabin includes a wall having a forward wall portion disposed immediately aft of and substantially conforming to an exterior aft surface of an aircraft cabin structure, such as a passenger seat, that is substantially not flat in a vertical plane. The forward wall portion includes a forward projection over an aft portion of the adjacent passenger seat. The forward wall portion can define a secondary space in the interior lavatory space, which can provide an amenity stowage space, and can include design elements providing visual space.

Abstract: A passenger seat and a row of passenger seats of a type wherein each seat includes a seatback for locating amenities for use by an aft-seated passenger. The seatback includes a video monitor positioned in an upper portion of the seatback, a first seatback pocket positioned below the video monitor, and a second seatback pocket positioned below the first seatback pocket. Each of the first and second seatback pockets includes a member configured to move apart from the seatback to facilitate access to a bottom of the respective seatback pocket. In embodiments, the first and second seatback pockets are positioned in respective first and second recesses formed in the seatback.

Abstract: The present disclosure provides a composite comprising a (meth)acrylate polymer matrix, a halogenated organic flame retardant, an inorganic flame retardant synergist, and fibrous reinforcement, a method of preparing the polymer matrix composite, and a composition for use in the method.

Abstract: A method of determining occupancy of an area is disclosed herein. The method includes receiving a first signal from an occupancy sensor, the first signal indicating a distance to a surface and an infrared signature of the area, determining a first infrared signature of the area based on the first signal from the occupancy sensor, receiving a second signal from the occupancy sensor, the second signal indicating the distance to a surface and the infrared signature of the area, determining a second infrared signature of the area based on the second signal, the second infrared signature being different than the first infrared signature, determining that the area is occupied based at least on part on the second infrared signature being different than the first infrared signature, and setting a status of the area to occupied in response to the second infrared signature being different than the first infrared signature.

Abstract: A self-locking mounting insert is provided for attaching a panel to a vehicle structure. A tab of the panel may be inserted into a keyway of the insert. The tab may slide between a latched and unlatched position within the keyway. When in the latched position, a latching member prevents the tab from being removed from the keyway. By moving a magnet proximate to the latching member, the latching member may be magnetically impelled to move to an unlatched position to permit the tab to be removed from the keyway.

Abstract: A method is disclosed herein, including detecting, by a processor, a signal received from a camera, the signal including an image. The method further includes processing, by the processor, the received signal to identify an image included in the signal and determining, by the processor, that the signal includes a discreet message, the discreet message is embedded within an image. The method further includes decrypting, by the processor, the discreet message embedded within the signal and sending, by the processor, the decrypted message to be displayed.

Abstract: A waste compartment system for an aircraft can include a motor operated door and a proximity sensor configured to sense an object near the door or approaching the door. The system can include a control module operatively connected to the proximity sensor and configured to open the door in response to the proximity sensor sensing an object near the door. The control module can be configured to close the door after a preset time after the proximity sensor senses an object.

Abstract: A valve assembly includes a valve head. A valve stem extends from the valve head and into a drain bore in a housing. A first guidance retainer ring is mounted around the valve stem at a first axial location on the valve stem. A second guidance retainer ring is mounted around the valve stem at a second axial location on the valve stem spaced apart from the first axial location.

Abstract: A system for contactless operation of an aircraft lavatory door comprises a controller operatively connected to control an actuator for opening and closing a lavatory door. A gesture sensing system is operatively connected to the controller for sending gesture data to the controller indicative of a user gesturing for the actuator to actuate. A mmWave radar sensing system is operatively connected to the controller to indicate user presence. The controller includes machine readable instructions configured to verify gesture input from the gesture sensing system using input from the mmWave radar sensing system before controlling the actuator to open or close the lavatory door.

Abstract: A galley insert system for an aircraft galley comprises a galley support structure, a galley insert configured to be coupled to the support structure, and a latch mechanism for coupling the insert to the support structure, the latch mechanism configured to automatically engage to couple the insert to the support structure when the insert is moved into a latching position on the support structure, wherein the latch mechanism comprises a control mechanism configured to be actuated to disengage the latch mechanism.

Abstract: A steam oven for a mobile platform (e.g., sized for a galley insert in an aircraft galley) injects water into the oven cavity to generate steam. The water is injected as a horizontal jet over a fan and into an opposing baffle plate, where a portion is heated on contact and immediately evaporates into steam. The steam is then distributed throughout the oven cavity by the fan. The unevaporated portion is drawn downward into the fan, where it too is distributed throughout the oven cavity rather than collecting on the cavity floor. Rather than building up within the injector, scale accumulates on the baffle plate where it may easily be cleaned or removed.

Abstract: An oxygen supply system for delivering oxygen to passengers in an aircraft in an event of a loss of cabin pressure includes a source of oxygen, a passenger service unit, and a main controller. The passenger service unit includes a face mask configured to facilitate a flow of an accumulated volume of oxygen from the source of oxygen, and a sensor configured to detect at least one of an ambient pressure, an airflow in a first direction, or an airflow in a second direction. The main controller is configured to determine at least one of the ambient pressure, the airflow being in the first direction, or the airflow being in the second direction, and command delivery of oxygen from the source of oxygen to the face mask in response to the determination.

Abstract: A mask stowage container is provided having a door panel coupled to a box via a securement mechanism, the securement mechanism having a striker having a neck and a protrusion, the striker mounted to the door panel, a holder, the holder including a first retainer and a second retainer, the striker configured to be laterally retained between the first retainer and the second retainer.