Systems, apparatuses, and methods provide for technology that moves a vent panel into a pressurization position to close a depressurization vent to allow an apparatus to be pressurized. In the pressurization position, a first protrusion abuts a door structure. The vent panel is coupled with the first protrusion. The technology moves the vent panel to a depressurization position to open the depressurization vent to depressurize the apparatus. In the depressurization position the first protrusion is separated from the door structure. The technology moves the vent panel to an intermediate position between the pressurization position and the depressurization position. In the intermediate position the first protrusion abuts the door structure.

A cargo door for an aircraft having a plurality of locking devices spaced near an edge of the cargo door, at least one vent panel, a control handle, and a torsion shaft actuating a plurality of pins to lock and unlock the plurality of locking devices is provided. A first drive connects the control handle to the torsion shaft to rotate the torsion shaft following a locking or unlocking command imparted to the control handle. A second drive connects the torsion shaft to the at least one vent panel to open or close the at least one vent panel following a rotation of the torsion shaft. The torsion shaft is a double shaft having two coaxial and rotationally integral shafts, namely an inner control shaft and an outer tubular control shaft.

A door assembly includes a door panel having a first pair of bearings secured to a top portion of the door panel and a second pair of bearings secured to a bottom portion of the door panel. A wall having an opening which extends through the wall wherein a first rail track extends along a first end portion of the opening having a first opening and a second rail track extends along a second end portion of the opening having a second opening. At least one hinge blocking assembly includes a first bracket connected to the wall and a second bracket wherein the second bracket is rotatably mounted to the first bracket about a fixed axis of rotation defined by the at least one hinge blocking assembly wherein with the second bracket in a first position the second bracket extends away from the first bracket.

A decompression panel assembly for use in an aircraft includes a frame including a first surface and an opposing second surface, wherein the frame defines a grille opening and at least partially defines a flow path opening that are each defined between the first and second surfaces. The decompression panel assembly also includes a first panel and a second panel pivotally coupled together at a central hinge. A retention plate is releasably coupled to the first and second panels and is configured to move between a closed position and an open position. The first and second panels at least partially cover the grille opening in a planar position when the retention plate is in the closed position, and the first and second panels move away from the grille opening to a folded position when the retention plate is in the open position.

A pressure-release latch for releasably locking closed a door panel on the frame to which the door panel is hingedly connected. The latch has a base and a latch bolt rotatable between a closed position that locks the door panel closed and an open position that allows the door to swing open. A latch bolt actuator connected to the latch bolt rotates the latch bolt between the closed and open positions from outside the door panel, locks the latch bolt in the closed position, and automatically unlocks and moves the latch bolt to the open position when a predetermined opening force is applied to the latch bolt. A calibration mechanism adjusts the magnitude of the predetermined opening force required to automatically unlock the latch.

A return air bridge for use in an aircraft assembly includes an inboard portion configured to couple to a sidewall assembly at a bottom edge of the sidewall assembly and an outboard portion configured to couple to a structural member. The return air bridge also includes at least one support coupling the inboard portion to the outboard portion such that a return air flow path is defined between the inboard portion and the outboard portion. The outboard portion comprises a plate configured to direct an air flow along the return air flow path upwardly with respect to the bottom edge of the sidewall assembly.

A method and apparatus are provided for at least partially environmentally isolating a volume, such as by environmentally isolating the cargo compartment from the passenger compartment of an aircraft. In the context of an apparatus, a barrier curtain is provided that partially defines the volume. The apparatus also includes a cable extending along one or more walls that partially define the volume. The barrier curtain is supported by the cable. The apparatus may also include a cable release mechanism. The cable is held in place by the cable release mechanism and the cable release mechanism is configured to detach the cable at a predetermined load, thereby permitting the barrier curtain to drop in response to a decompression event.

An aircraft cabin subfloor construction has flow paths through the subfloor that vent air pockets trapped beneath an air impermeable floor mat on the subfloor where, due to a difference in pressure in the air pockets trapped beneath the floor mat and the air in the aircraft cabin above the floor mat, the air pockets would create bubbles or buckling in the floor mat. The venting of the air pockets beneath the floor mat by the flow paths eliminates the problem of bubbling or buckling in the floor mat.

An aircraft propulsion unit comprising a motor, a system for supplying fuel to the motor, a fairing inside which the motor and at least part of the fuel supplying system are positioned, and at least one pressure relief device configured to establish communication between the inner and outer zones of the fairing when the pressure in the inner zone is greater than or equal to a given threshold or when a leak is detected. Also an aircraft comprising at least one such propulsion unit.

A flight deck barrier door for an aircraft, the flight deck barrier door including a door frame and a door panel in the door frame. The door panel has a plurality of vents. The door panel and door frame have a minimum total vented surface area of 1000 square inches.