There is provided a fuel tank system comprising a fuel tank; and a lattice in the fuel tank for impeding the propagation of a flame front within the fuel tank, the lattice defining a plurality of openings to allow a fluid to pass through.

There is provided a fuel tank system comprising a fuel tank; and a lattice in the fuel tank for impeding the propagation of a flame front within the fuel tank, the lattice defining a plurality of openings to allow a fluid to pass through.

A heat exchanger including a sealed housing and a body positioned inside the housing, the body including a stack of least one first assembly of first and second plates pressed against each other, between which flows a first fluid, and at least one second assembly of third and fourth plates pressed against each other, between which flows a second fluid, the first and second assemblies being arranged so that they transfer heat between the first and second fluids. This configuration limits the risk of leaks and mixing of the two fluids.

An aircraft including at least one hydrogen engine, at least one hydrogen supply device including at least one hydrogen tank and at least one item of equipment through which the hydrogen flows and which is positioned between the hydrogen tank and the hydrogen engine. The aircraft includes at least one sealed container sealed from the outside air, in which sealed container the equipment of the hydrogen supply device is positioned. This solution allows a safe hydrogen installation to be obtained using existing equipment.

An aircraft including at least one hydrogen engine, at least one hydrogen supply device including at least one hydrogen tank and at least one item of equipment through which the hydrogen flows and which is positioned between the hydrogen tank and the hydrogen engine. The aircraft includes at least one sealed container sealed from the outside air, in which sealed container the equipment of the hydrogen supply device is positioned. This solution allows a safe hydrogen installation to be obtained using existing equipment.

A bonding equipment safety apparatus for the prevention of damage to aircraft or other aircraft refueling equipment. This apparatus has a housing with a proximity sensor mounted within that detects if the door of the housing has been closed by the attachment of a bonding cable and clamp, which detection then engages a control system influencing the movement of the fueling vehicle, ensuring that the bonding cable equipment has been properly detached from the aircraft and stowed before allowing the aircraft refueling vehicles and equipment to move away from the aircraft and cause damage.

A self-heating and self-sealing bladder comprising of a fuel and water resistant layer overlaid on a mold; an adhesive tack layer overlaid on the fuel and water resistant layer; a first fabric reinforcement layer overlaid on the adhesive tack layer; a microballoon powder, water containing microspheres, and reactive salt powders disposed in a plurality of pouches such that upon activation the microballoon powder and the reactive salt powders come in contact with the water and react to create a formulation that results in heat and expansion, thus a self-sealing capability; and, a second fabric reinforcement layer overlaid the plurality of pouches.

An air separation module includes a canister extending between a first end and an opposite second end, a separator fixed within the canister to separate a compressed air flow into an oxygen-enriched air flow fraction and an oxygen-depleted air flow fraction, and a one-piece cap. The one-piece cap is connected to the first end of the canister and has a filter module mount portion on a side of the one-piece cap opposite the separator to support a filter module with the air separation module. Nitrogen generation systems and methods of making air separation modules are also described.

An air separation module includes a canister extending between a first end and an opposite second end, a separator fixed within the canister to separate a compressed air flow into an oxygen-enriched air flow fraction and an oxygen-depleted air flow fraction, and a one-piece cap. The one-piece cap is connected to the first end of the canister and has a filter module mount portion on a side of the one-piece cap opposite the separator to support a filter module with the air separation module. Nitrogen generation systems and methods of making air separation modules are also described.

Pneumatic air systems for use onboard aircraft include a compressor configured to receive air from an air supply and increase a pressure of said received air to generate compressed air, a heat exchanger configured to receive the compressed air as a first working fluid and a treating air as a second working fluid, the heat exchanger configured to convert the compressed air to compressed and temperature treated air, one or more aircraft systems configured to receive the compressed and temperature treated air, and a surge prevention circuit arranged to prevent surge of air at the compressor, wherein the surge prevention circuit comprises a mechanical valve that is actuated based on a detected pressure within a sense line operably coupled to the mechanical valve.