Abstract: A system for heating cryogenic fuel includes a storage take, a supply line, a closed circuit, a cryogenic fuel heat exchanger, one or more working fluid heat exchangers, and a controller The storage tank stores the cryogenic fuel in a liquid state. The supply line connects the storage tank to a combustion chamber of an aircraft turbine engine. The closed circuit circulates a heat-transfer fluid. The cryogenic fuel heat exchanger heats the cryogenic fuel by the heat-transfer fluid. The closed circuit includes a pump for circulating the heat-transfer fluid and a closed expansion vessel connected to the closed circuit. The controller controls the pump to ensure a heat-transfer fluid flow rate inside the closed circuit so that the closed expansion vessel keeps the heat-transfer fluid circulating in the closed circuit at a pressure such that the heat-transfer fluid remains in the liquid state and does not change phase.

Abstract: A thermal energy system for use with an aircraft includes a cooling loop and a cooler. The cooling loop includes a fluid conduit and a pump configured to move fluid through the fluid conduit to transfer heat from a heat source to the fluid in the fluid conduit to cool the heat source. The cooler includes an air-stream heat exchanger located in a duct and is in thermal communication with the fluid conduit to transfer heat between the fluid in the cooling loop and the air passing through the duct.

Abstract: A combustion device includes: a burner plate facing a combustion chamber; a plurality of injection hole groups formed in the burner plate so as to have an annular shape; and a slit having an annular shape and formed between the plurality of injection hole groups.

Abstract: A propulsion system for an aircraft includes a gas turbine engine and an engine power extraction system. The gas turbine engine includes a first rotational assembly. The first rotational assembly includes a propeller and a first shaft coupled to the propeller. The first shaft is configured for rotation about a rotational axis of the propulsion system. The engine power extraction system includes a fluid pump, a fluid motor, and a generator. The fluid pump is operably coupled to the first shaft. The fluid pump is in fluid communication with the fluid motor. The fluid pump is configured to pressurize and direct a hydraulic fluid to the fluid motor causing the fluid motor to rotatably drive the generator to generate an electrical power output.

Abstract: A fuel power transfer system for an engine may include a cryogenic fuel supply, a fuel pump in fluid communication with the cryogenic fuel supply, a multi-position valve in fluid communication with the fuel pump and a combustion chamber of the engine, a fuel turbine operatively coupled to the fuel pump and having a primary discharge port in fluid communication with the combustion chamber, a primary heat exchanger in fluid communication between the multi-position valve and the fuel turbine, and a gearbox operatively coupled to the fuel turbine and the fuel pump and configured to transfer power from the fuel turbine to the engine.

Abstract: Nacelle inlet structures comprise an inlet inner barrel, an inlet outer barrel at least substantially enclosing the inlet inner barrel, an aft bulkhead extending between and operatively coupled to each of the inlet inner barrel and the inlet outer barrel, and an annular load absorber that is operatively coupled to each of the aft bulkhead and the inlet inner barrel. The aft bulkhead is operatively coupled to the inlet inner barrel via the annular load absorber, and the annular load absorber has a U-shaped cross-section that is open toward the inlet outer barrel.

Abstract: The proposed solution relates to a nozzle assembly for a combustion chamber of an engine, having at least one nozzle, which includes a nozzle head that extends along a nozzle longitudinal axis and has at least one nozzle exit opening for injecting fuel into a combustion space of the combustion chamber, and at least one air-guiding duct, by way of which a swirl-affected air flow can be created in the direction of the combustion space along an outer lateral surface of the nozzle head. At least one guide element which protrudes on the outer lateral surface of the nozzle head is in a flow path for the air flow of the at least one air-guiding duct and is configured to guide at least a part of the air flow radially inwards in relation to the nozzle longitudinal axis into a central injection region downstream of the nozzle exit opening.

Abstract: The present invention relates to fluid pump assemblies in general, and in exemplary embodiments to fluid pump assemblies that are magnetically supported in position, and to related kits and methods useful to circulate water in aquariums. The fluid pump assembly comprises an outer mount, an inner mount, and a pump. The outer mount includes at least one outer permanent magnet; the inner mount includes at least one inner permanent magnet; and the pump includes at least one soft magnetic material. The outer permanent magnet, the inner permanent magnet, and the soft magnetic material collectively form a magnetic circuit.

Abstract: A fan with increased heat-removing ability and reduced noise in operation includes a hub, a baffle, a first blade layer, and a second blade layer. The first blade layer includes a plurality of first blades, and the second blade layer includes a plurality of second blades. An orthogonal projection of each of the plurality of first blades on the baffle is located between orthogonal projections of adjacent two of the plurality of second blades on the baffle. A length of the plurality of first blades is greater or less than a length of the plurality of second blades to avoid any resonance. An electronic device including the fan is also disclosed.

Abstract: A fan including: a motor stator; an axial diffuser, fixedly connected to the motor stator and comprising an outer cylinder, a main body portion disposed in the outer cylinder, and diffuser blades connected to the outer cylinder and the main body portion, the diffuser blades separating an annular space between the outer cylinder and the main body portion into more than one pressure diffusion ducts, the main body portion being provided with a central shaft hole; an air inlet cover, fixedly connected to the axial diffuser, the air inlet cover and the axial diffuser forming an impeller chamber and an annular no-gate channel around the impeller chamber, the annular no-gate channel communicating with the impeller chamber and the pressure diffusion ducts, and the air inlet cover being provided with an air inlet; and an impeller, disposed in the impeller chamber and used to introduce air from the air inlet.

Abstract: Provided for may be a pump failsafe apparatus for use with a pump motor, the pump failsafe apparatus comprising a foot pedal configured to generate a first signal when depressed and a second signal when released. The apparatus may comprise a power supply having an internal logic controlled power switch, the power supply in electrical communication with at least the pump motor, wherein the internal logic controlled power switch includes an active state (ON) and an inactive state (OFF). The apparatus may further include an overspeed detector, an under voltage detector in electrical communication with at least the power supply, the under voltage detector configured to measure a logic voltage, and a pump cartridge detector.

Abstract: A blower, comprises a blower body, accommodating therein a fan and an electric motor driving the fan to rotate. A rotation shaft of the fan defines a longitudinal axis. A blow pipe is removably attached to the blower body. A tapered member is provided between the electric motor and an air inlet of the blower body, the tapered member gradually narrowing toward the air inlet.

Abstract: The present application discloses a dual-purpose inflator pump, including a pump body and a casing, a locking mechanism is provided at the top of the pump body, and the sidewall of the pump body is provided with a trigger configured for controlling the pump body to operate by pressing. The casing is defined with an accommodation chamber for accommodating the pump body, and the accommodation chamber has a top opening; a clamping groove for clamping the locking mechanism is defined on the inner side of the top of the casing; and when the pump body is accommodated in the accommodation chamber, the pump body is rotatably connected to the casing, and the inner side of the casing is fixedly provided with a pressing block for pressing the trigger.

Abstract: A shaftless rotary machine includes an impeller, a motor positioned radially outward from the impeller, and a housing. The impeller includes a hub, blades connected to the hub, and a shroud connected to the blades. The motor includes a rotor connected to the shroud and a stator. The housing includes an inlet, an outlet, and a duct. The duct extends from the inlet to the outlet. The duct partially surrounds the motor and the impeller.

Abstract: A fan motor for a vacuum cleaner includes a motor mount defining a cooling flow path inlet, an impeller, an impeller cover defining an air inlet, an air discharge opening defined at the motor mount and configured to discharge air to an outer space of the motor mount, and a cooling flow path outlet defined vertically above the motor mount. The cooling flow path inlet is configured to introduce air from the outer space of the motor mount into an inner space of the motor mount to cool the motor part, and the cooling flow path outlet is configured to discharge air from the inner space of the motor mount toward a space that is defined between the impeller and the air discharge opening based on the space between the impeller and the air discharge opening having a lower pressure than the inner space of the motor mount.

Abstract: A fluid pump including a fluid end body having a plurality of interconnected fluid paths, a plurality of valves located within the plurality of interconnected fluid paths and a plunger located within at least one of the plurality of interconnected fluid paths to push a first portion of the volume of fluid through a first section of the plurality of interconnected fluid paths and from a second fluid port during a push stroke to push a second portion of the volume of fluid through a second section of the plurality of interconnected fluid paths and from the second fluid port during a back stroke. Each of the plurality of valves is movable between an open position and a closed position to form the first section and the second section.

Abstract: An electrical submersible pump assembly comprising a first section and a second section with an outer housing and a drive shaft. A coupling assembly comprising a coupling, a first and a second locking keys, and a plunger assembly mechanically couples the first drive shaft to the second drive shaft. The coupling is cylindrical in shape with splines configured to transfer torque from the first drive shaft to the second drive shaft. The plunger assembly extends the first and second set of locking keys from a key port in the first shaft and second shaft into a groove within the coupling. The coupling assembly is configured to transfer tensile stress from the first drive shaft to the second drive shaft in response to extending the first locking key in the first groove and the second locking key in the second groove of the coupling.

Abstract: A fan comprises a fan frame, a motor, an impeller, a circuit board and an enclosing layer. The fan frame has a motor base disposed in a central portion thereof. The motor is mounted on the motor base and has a rotor, a stator and a bearing unit. The stator is disposed around the outer periphery of the bearing unit, and the rotor is sheathed on the stator and the bearing unit. The impeller is mounted on the motor. The circuit board is sheathed on the bearing unit and located between the stator and the motor base, and has a plurality of electronic components disposed on a first surface thereof. The stator and the circuit board are enclosed by the enclosing layer, and the plurality of electronic components are enclosed by the uniform enclosing layer with a specific thickness.

Abstract: The present disclosure relates to a linear compressor and a refrigerator including the same. A linear compressor according to the spirit of the present disclosure includes a shell, a cylinder, a piston and a muffler. And the muffler includes a plurality of flow tubes extending in a flow direction of the refrigerant, and a plurality of through-holes passing through at least one of the plurality of flow tubes.

Abstract: An axial piston pump having several pistons has a magnetic encoder (5), which is arranged on a swash plate, and a magnetic field sensor, which is arranged in such a way that it faces towards the magnetic encoder (5). The magnetic encoder (5) has at least two permanent magnets (2, 3) and a plate (4) which consists of a ferromagnetic material. The permanent magnets (2, 3) are arranged on the plate (4) in such a way that they each faces a magnetic pole towards the plate (4), and this pole is at least partially covered by the plate (4) in each case.