A fuel freeze mitigation and/or prevention system includes a power generator configured and adapted to be positioned within a fuel storage tank. A fluid mover device is in electrical communication with the power generator. The fluid mover device is configured and adapted to be positioned within a fuel storage tank to mitigate or prevent fuel freeze in the fuel storage tank. A method for mitigating or preventing fuel freeze in a fuel storage tank includes harvesting energy with a power generator positioned within the fuel storage tank, charging a battery with the harvested energy, monitoring a fuel temperature inside the fuel storage tank, and turning a fluid mover device positioned within the fuel storage tank ON or OFF depending on at least one of a manual command or the fuel temperature inside the fuel storage tank to mitigate or prevent fuel freeze in the fuel storage tank.

A vehicle including a fuselage, and a fuel tank within the fuselage. The fuel tank includes one or more sealant layers disposed over one or more internal surfaces of the fuel tank. In at least one embodiment, a release agent is disposed between the one or more internal surfaces and the one or more sealant layers.

A vehicle including a fuselage, and a fuel tank within the fuselage. The fuel tank includes one or more sealant layers disposed over one or more internal surfaces of the fuel tank. In at least one embodiment, a release agent is disposed between the one or more internal surfaces and the one or more sealant layers.

An exemplary cushion for a fuel system is constructed of a lattice structure formed of a material that is substantially nonabsorbent of fuel and has a network of nodes and beams defining cells, an exterior surface of the lattice structure is configured to be oriented toward a fuel cell and an interior surface of the lattice structure is configured to fit to a mounting surface.

An exemplary cushion for a fuel system is constructed of a lattice structure formed of a material that is substantially nonabsorbent of fuel and has a network of nodes and beams defining cells, an exterior surface of the lattice structure is configured to be oriented toward a fuel cell and an interior surface of the lattice structure is configured to fit to a mounting surface.

An aircraft including a fuselage, a power generator configured to provide power to the aircraft, and at least one fuel tank for holding fuel for the power generator, and a fuel delivery assembly. The fuel tank is positioned in the fuselage and is configured to hold hydrogen fuel in a liquid phase. The fuel tank has a chamber for holding the hydrogen fuel and a fuel extraction line fluidly coupled to the chamber. The fuel extraction line extends from the fuel tank in a forward direction of the fuselage and at a downward angle relative to a centerline of the fuselage. The fuel delivery assembly is fluidly coupled to the fuel extraction line and fluidly connects the fuel tank to the power generator. The fuel delivery assembly is configured to provide the hydrogen fuel from the fuel tank to the power generator.

An aircraft including a fuselage, a power generator configured to provide power to the aircraft, and at least one fuel tank for holding fuel for the power generator, and a fuel delivery assembly. The fuel tank is positioned in the fuselage and is configured to hold hydrogen fuel in a liquid phase. The fuel tank has a chamber for holding the hydrogen fuel and a fuel extraction line fluidly coupled to the chamber. The fuel extraction line extends from the fuel tank in a forward direction of the fuselage and at a downward angle relative to a centerline of the fuselage. The fuel delivery assembly is fluidly coupled to the fuel extraction line and fluidly connects the fuel tank to the power generator. The fuel delivery assembly is configured to provide the hydrogen fuel from the fuel tank to the power generator.

A cryogenic tank for storing cryogenic fluids is disclosed. The cryogenic tank is typically configured to be mounted on a vehicle for supplying cryogenic fuel to a propulsion system of the vehicle. The cryogenic tank comprises an inner vessel for containing cryogenic fluids and an outer vessel surrounding the inner vessel to define a vacuum insulating volume therebetween. The outer vessel is configured to transmit static and/or dynamic loads, while the inner vessel is partially or completely isolated from such loads.

A cryogenic tank for storing cryogenic fluids is disclosed. The cryogenic tank is typically configured to be mounted on a vehicle for supplying cryogenic fuel to a propulsion system of the vehicle. The cryogenic tank comprises an inner vessel for containing cryogenic fluids and an outer vessel surrounding the inner vessel to define a vacuum insulating volume therebetween. The outer vessel is configured to transmit static and/or dynamic loads, while the inner vessel is partially or completely isolated from such loads.

The present application relates to a method of forming a structural portion of a fuel tank for an aircraft in which the structural portion is formed from a fibre reinforced polymer and a sensor is integrated in the structural portion. The method includes providing a fibre ply which acts as a structural component, and embroidering an electrically conductive wire in a predetermined pattern on the fibre ply to form the sensor. The fibre ply acts as a sensor substrate. Furthermore, the method includes applying a polymer matrix to the fibre ply so that the fibre ply and electrically conductive wire are covered by the polymer matrix. The present application also relates to a fuel tank for an aircraft, a fuel quantity indicating system, and an aircraft.