Abstract: A fuel system can include a first fuel circuit, a second fuel circuit, and an inert gas purge system operatively connected to both the first fuel circuit and the second fuel circuit to purge at least a portion of either or both of the first and/or second fuel circuit. The first fuel can be a liquid fuel and the second fuel can be a gaseous fuel. The first fuel circuit can include a first fuel manifold configured to fluidly communicate a first fuel supply with at least one dual fuel nozzles downstream of the first fuel manifold.

Abstract: A fuel system can include a first fuel circuit, a second fuel circuit, and an inert gas purge system operatively connected to both the first fuel circuit and the second fuel circuit to purge at least a portion of either or both of the first and/or second fuel circuit. The first fuel can be a liquid fuel and the second fuel can be a gaseous fuel. The first fuel circuit can include a first fuel manifold configured to fluidly communicate a first fuel supply with at least one dual fuel nozzles downstream of the first fuel manifold.

Abstract: A fuel supply system for an aircraft engine, comprises a gaseous fuel source and a fuel nozzle. The fuel nozzle includes a housing having a housing interior chamber and a fuel swirler disposed inside the housing interior chamber. The fuel swirler is fluidly connected to the gaseous fuel source for directing gaseous fuel to a combustor of the aircraft engine. The fuel swirler defines a gaseous fuel path extending from a fuel inlet to a fuel outlet. The gaseous fuel path includes a plurality of discrete apertures distributed around a circumference of the fuel swirler, each of the plurality of discrete apertures having a cross-sectional area selected to prevent a flame from propagating in an upstream direction through the gaseous fuel path towards the gaseous fuel source.

Abstract: A fuel supply system for an aircraft engine, comprises a gaseous fuel source and a fuel nozzle. The fuel nozzle includes a housing having a housing interior chamber and a fuel swirler disposed inside the housing interior chamber. The fuel swirler is fluidly connected to the gaseous fuel source for directing gaseous fuel to a combustor of the aircraft engine. The fuel swirler defines a gaseous fuel path extending from a fuel inlet to a fuel outlet. The gaseous fuel path includes a plurality of discrete apertures distributed around a circumference of the fuel swirler, each of the plurality of discrete apertures having a cross-sectional area selected to prevent a flame from propagating in an upstream direction through the gaseous fuel path towards the gaseous fuel source.

Abstract: A fuel system can include a first fuel circuit, a second fuel circuit, and an inert gas purge system operatively connected to both the first fuel circuit and the second fuel circuit to purge at least a portion of either or both of the first and/or second fuel circuit. The first fuel can be a liquid fuel and the second fuel can be a gaseous fuel. The first fuel circuit can include a first fuel manifold configured to fluidly communicate a first fuel supply with at least one dual fuel nozzles downstream of the first fuel manifold.

Abstract: A motor is provided that is capable of electronically switching between operating in a high torque mode and a low torque mode. The high torque mode may be switched reluctance mode and the low torque mode may be synchronous reluctance mode. The motor has a stator having two sets of armature windings, and a rotor having two sets of flux barriers each adapted to shape a magnetic flux distribution generated by a corresponding one of the sets of armature windings. The stator may comprise a plurality of teeth circumferentially spaced apart from one another around a rotation axis of the motor. The armature windings may include switched reluctance armature windings, each wrapped around a single stator tooth, and synchronous reluctance windings, each wrapped around multiple adjacent stator teeth. An inverter and controller may be connected to each set of armature windings for controlling the electronic switching of the armature windings.

Abstract: The invention provides a light emitting diode device that comprises a light emitting diode die. The method for manufacturing the light emitting diode device comprises positioning a first stencil over a carrier, printing a phosphor material onto the carrier through at least one aperture of the first stencil to form a phosphor material piece on the carrier, and attaching the light emitting diode die onto the printed phosphor material piece.

Abstract: A vehicle combination for orientation free steering experience to a user includes a remote control unit to for sending rotational and speed signals and a vehicle unit moves in the direction for receiving the rotation and speed signals, and further moving in the direction decoded from the rotation and speed signals. The remote control unit includes transmits the rotational pulse and speed signals. The vehicle unit includes a receiver to decode the rotational pulse and the speed signal received from the transmitter and further converts the decoded rotational pulse to determine the steering power. The vehicle unit is further driven based on the steering power and a second power source to power the receiver and the motor unit. The rotational pulse generated from the remote control unit is directly proportional to the steering power decoded by the receiver.

Abstract: A vehicle combination for orientation free steering experience to a user includes a remote control unit to for sending rotational and speed signals and a vehicle unit moves in the direction for receiving the rotation and speed signals, and further moving in the direction decoded from the rotation and speed signals. The remote control unit includes transmits the rotational pulse and speed signals. The vehicle unit includes a receiver to decode the rotational pulse and the speed signal received from the transmitter and further converts the decoded rotational pulse to determine the steering power. The vehicle unit is further driven based on the steering power and a second power source to power the receiver and the motor unit. The rotational pulse generated from the remote control unit is directly proportional to the steering power decoded by the receiver.

Abstract: A motor is provided that is capable of electronically switching between operating in a high torque mode and a low torque mode. The high torque mode may be switched reluctance mode and the low torque mode may be synchronous reluctance mode. The motor has a stator having two sets of armature windings, and a rotor having two sets of flux barriers each adapted to shape a magnetic flux distribution generated by a corresponding one of the sets of armature windings. The stator may comprise a plurality of teeth circumferentially spaced apart from one another around a rotation axis of the motor. The armature windings may include switched reluctance armature windings, each wrapped around a single stator tooth, and synchronous reluctance windings, each wrapped around multiple adjacent stator teeth. An inverter and controller may be connected to each set of armature windings for controlling the electronic switching of the armature windings.

Abstract: A device handler for testing and sorting electronic devices has a testing station operative to test the electronic devices and to classify them according to different binning characteristics. A buffer assembly receives electronic devices which have been classified at the testing station, and the buffer assembly further comprises a first loading region having a plurality of receptacles and a second loading region having a plurality of receptacles. An output station is operative to unload electronic devices according to their different binning characteristics from either one of the first or second loading region of the buffer assembly for storage while electronic devices are being loaded onto the other loading region.

Abstract: A device handler for testing and sorting electronic devices has a testing station operative to test the electronic devices and to classify them according to different binning characteristics. A buffer assembly receives electronic devices which have been classified at the testing station, and the buffer assembly further comprises a first loading region having a plurality of receptacles and a second loading region having a plurality of receptacles. An output station is operative to unload electronic devices according to their different binning characteristics from either one of the first or second loading region of the buffer assembly for storage while electronic devices are being loaded onto the other loading region.