Abstract: A wound element made up of a plurality of superposed layers of turns wound on a core, including a sheet of a material that is thermally conductive at least in its plane, which sheet is interposed between two of the superposed layers of turns and has an end projecting from these layers and including at least one temperature probe for delivering temperature information about the wound element.

Abstract: A cooling module including a first air inlet, a second air inlet, and an air discharge vent, the module having two check valves, each mounted in register with a respective inlet and arranged to allow air to pass towards the inside of the module and to oppose a flow of air in the opposite direction. An electronic unit including such a box.

Abstract: The invention relates to an actuation device (22) for a system (20) including an emergency ram air turbine (21). Said device includes a ram (22) extending along a longitudinal axis (29) and including: a cylinder (30) configured to be connected to an aircraft structure (23) and a piston (33) extending into the cylinder (30) and defining two chambers (31, 32) in the latter. The piston (33) is equipped with a rod (33a) partially extending outside the cylinder (30). Said rod portion extending outside the cylinder (30) is configured to be connected to the emergency ram air turbine (21). The piston (33) is configured to move, relative to the cylinder (30), between a retracted position and a released position, wherein the length of the portion (33b) of the rod (33a) extending outside the cylinder (30) is greater than in the retracted position.

Abstract: A helicopter turbomachine includes an electric starter motor configured to rotate a drive shaft, a heat sink for cooling the electric motor, and a reversible ventilation wheel driven by the electric motor. The turbomachine also includes an overrunning clutch that transmits the torque from the electric motor to the drive shaft. The electric motor is configured such that, in the first direction of rotation, the motor rotates the drive shaft and the ventilation wheel to generate an air flow through the heat sink in a direct direction, and, in the reverse direction of rotation, the motor rotates only the ventilation wheel to generate an air flow through the heat sink in a direction opposite the direct direction.

Abstract: A DC/AC electrical power converter device having inlet terminals for electrically connecting to a DC electricity power supply network, outlet terminals for electrically connecting to an electric motor, a chopper electrical converter coupled to the inlet terminals, and an electrical inverter coupled between the chopper electrical converter and the outlet terminals. The converter device further includes a control unit for controlling the electrical inverter and that is configured to operate using pre-calculated pulse width modulation with pre-calculated unchanging switching instants for the controlled switches of the electrical inverter regardless of the frequency of rotation of the motor and of the voltage of the electricity network for connection to the device.

Abstract: A brazing method for assembling two elements includes selecting two brazing materials that can generate, when they are heated and melted, an intermetallic compound having a melting temperature which is higher than the melting temperature of each of the selected brazing materials taken individually, positioning the two selected brazing materials between the two elements, heating and melting the two selected brazing materials in order to substantially reach the melting temperature of each of the selected brazing materials so as to achieve the precipitation of an intermetallic compound having a melting temperature which is higher than the melting temperature of each of the selected brazing materials taken individually.

Abstract: A bearing assembly for an electrical generator includes a frame, a bearing liner, a bearing and a non-metallic ring. The frame is configured to connect with a housing of the electrical generator. The bearing liner is connected with the frame. The bearing is received in the bearing liner. The non-metallic ring is interposed between the bearing liner and the bearing.

Abstract: A system for generating air includes: an electromechanical device generating an airflow equipped with an air inlet opening and an outlet; a casing extending between a first end attached to the air inlet opening and a second end located opposite the first end, the casing including two parts together defining a closed recess, each part including a hollow wall defining a channel extending between the two ends of the casing, each channel opening in front of the air inlet opening so that the electromechanical device is supplied with air routed by the channels; and at least one electronic card for power supply or control of the electromechanical device located in the recess of the casing.

Abstract: A 12-phase static electrical transformer rectifier including a transformer and first and second three-phase rectifier circuits for coupling to a load, the transformer including a primary circuit having three primary coils arranged in a star configuration and a secondary circuit including three first secondary coils and three second secondary coils that are distinct from the first secondary coils. The secondary circuit of the transformer includes a loop of six secondary coils formed by electrically connecting together the three first secondary coils and the three second secondary coils of the secondary circuit.

Abstract: An extractor for removing a spline adapter from a housing. The extractor includes a drive rod, and a mandrel that threadingly receives the drive rod. The drive rod is adapted to extend through the mandrel and the spline adapter so as to contact a contact area of the housing to bias the mandrel and the spline adapter in a direction away from the contact area as the drive rod is threaded through the mandrel.

Abstract: An electrical board for connecting two electrical harnesses to each other includes a module holder and at least one connector module to establish the connection between the two electrical harnesses, said connector module comprising a base engaged with the module holder, a perforated core extending the base and allowing connection of the two harnesses to each other via plugs. The module holder includes a fixed jaw, a movable jaw mounted to pivot on the fixed jaw, and locking means for holding the mobile jaw in the closed position.

Abstract: An assembly includes a harness. The harness includes a plurality of electrical cables and a coil. The coil has a body on which said cables are fixed. The coil includes arms mounted on said body, at a first end, each arm having a second end on which one of said cables is fixed. The second end is movable with respect to the body, independently of the second ends of the other arms, between a position for maximum absorption of overlength of cable, in which the second end is remote from the body, and a position for maximum creation of overlength of cable, in which the second end is closer to the body.

Abstract: A current measuring device is protected against electrical surges in the event of the device being open circuit. The device includes a first current transformer, a first connection terminal having connected thereto a first terminal of the first current transformer, a second connection terminal having connected thereto a second terminal of the first current transformer, a protective resistance having a first terminal connected to the second connection terminal, and a load resistance connected between the first and second connection terminals across the terminals of which a voltage is measured from which the current flowing in a circuit passing through the first current transformer is determined. The device also includes a second current transformer connected to the terminals of the protective resistance, and current branch connection structure connected between the first connection terminal and a second terminal of the protective resistance.

Abstract: The invention concerns an embedded optical ring communication network (10) suitable for transmitting data between equipment (12a-12h), characterised in that it comprises an assembly of distribution boxes (14a-14h) each connected to two other distribution boxes (14a-14h) by multimode bidirectional optical fibres (16a-16h) so as to form a ring, suitable for also being connected to a multiplexer/demultiplexer (18a, 18b, 18c) by multimode bidirectional optical fibres, and in that each optical fibre (16a-16h) is suitable for transporting optical signals of at least three different modes (32, 32, 34).

Abstract: A permanent magnet synchronous machine includes a permanent magnet rotor and a three-phase stator, the machine being associated with a control inverter for controlling the stator of the machine. A method of controlling the machine includes taking three simultaneous measurements by three respective Hall effect sensors arranged to have a central sensor and two lateral sensors, the two lateral sensors being placed at 120°/p mechanical relative to the central sensor about the rotation axis of the rotor, where p is the number of pairs of poles of the machine; determining the position of the rotor based on the three measurements; controlling the control inverter as a function of the determined position of the rotor; and prior to controlling the inverter, applying a time delay to the three measurement signals so that the control of the control inverter takes account of a variable desired lag angle.

Abstract: A circular electric connector including a socket extending along an axis and provided at an axial end with cavities, and a sealing grommet provided on the axial end defining a front face through which electric elements may be inserted in the cavities and a circumferential wall, the connector additionally including a housing wherein the socket is housed, the housing including an attachment device for attachment with a backshell, the connector including a retaining ring around the circumferential wall of the grommet, the retaining ring being adapted to limit the expansion of the diameter of the grommet when the electric elements are inserted through the grommet. A connection may be made with such a connector and a known or modified backshell.

Abstract: A control device for connecting between two portions of an electrical power supply line. The device includes a bipolar transistor including a wide bandgap semiconductor material and having its emitter connected to one portion of the power supply line, its collector connected to another portion of the power supply line, and the device also including control connected to the base of the transistor.

Abstract: A printed circuit board including at least one blind metal-plated hole, for receiving a pin of the printed circuit board being covered by a first layer of a protective film on which there extends a second layer of electrically insulating flexible material, the first layer and second layer are for piercing by the pins when they are engaged in the metal-plated holes, the first and second layers being for claming between a support of the pins and the printed circuit board. An electronic unit including such a device. A method of fabricating a printed circuit card for such a device.

Abstract: A system for dissipating regenerated electric energy produced by an electric actuator of an aircraft, the dissipating system including: a resistor; two switching arms, each switching arm being connected in series with the resistor, the two switching arms being connected together in parallel, each switching arm including two switches connected to one another in series, each switch including two terminals and a control grid, each switch being capable of being controlled by controlling the potential applied to the control grid thereof; and a measurement system capable of measuring the voltage at the terminals of each switch.

Abstract: An electrical cabinet includes circuit breakers that can be snap-fitted onto a door hinged to a body of the cabinet and equipped with electrical connectors connected to portions of electrical circuits inside the door. The portions connect to fixed portions of the electric circuit, via other connectors, when the cabinet is closed.