Abstract: A method for monitoring a meshed current-return network on an aircraft, the meshed network including at least two sub-networks electrically connected by a plurality of electrical junctions, the method including: measuring a current intensity in at least one electrical junction in which a nominal current is circulating for given flight conditions of the aircraft; wirelessly transmitting the measured current intensity value; receiving the measured current intensity; comparing the measured current intensity with a reference intensity of the nominal current determined for the electrical junction for the given flight conditions; and diagnosing soundness of the electrical junction following the comparing.

Abstract: A coiled power device including a magnetic core including a first leg and a second leg which are parallel to each other, the device including a first coil and a second coil to generate mutual inductance between the coils, the first coil including a first winding of conducting wires around the first leg and a second winding of conducting wires around the second leg, the second coil including at least a third winding of conducting wires around the second leg and a fourth winding of conducting wires around the first leg, the first winding and the fourth winding covering the same portion of the first leg to limit leakage inductance of the coiled power device.

Abstract: A rotary three-phase transformer with free linked fluxes including a first portion and a second portion that are movable in rotation relative to each other about an axis A. A first body defines a first annular slot of axis A, a second annular slot of axis A, a third annular slot of axis A, and a fourth annular slot of axis A. The coils of the first portion include a first toroidal coil of axis A in the first slot, a second toroidal coil of axis A in the second slot, a third toroidal coil of axis A in the second slot, a fourth toroidal coil of axis A in the third slot, a fifth toroidal coil of axis A in the third slot, and a sixth toroidal coil of axis A in the fourth slot.

Abstract: A method and device for monitoring an electrical network, including: a mechanism detecting electrical signals and additional signals produced in the electrical network, the additional signals being of a different physical nature to the electrical signals; a mechanism for processing the electrical signals to define a first time reference representing a detection time of the electrical signals emitted upon a fault event arising in the electrical network; a mechanism processing the additional signals to define a second time reference representing a detection time of the additional signals emitted upon the fault event arising in the electrical network; and a processor spatially locating the fault event in the electrical network according to the first and second time references.

Abstract: An actuator device for actuating a swivel-mounted member carried by a rotor of a propulsion engine including: at least one electricity source; an electric actuator for swiveling the swivel-mounted member; a power supply circuit connecting the electricity source to the actuator; and an inertial device connected to the power supply circuit, the inertial device configured to convert electrical energy coming from the power supply circuit into mechanical energy, to store the mechanical energy, and to convert the mechanical energy into electrical energy for the power supply circuit.

Abstract: A method and configuration to optimize an entire traction system available on a helicopter including an auxiliary engine by allowing the engine to provide non-propulsive and/or propulsive power during flight. The auxiliary engine is coupled to participate directly in providing mechanical or electrical propulsive power and electrical non-propulsive power to the aircraft. An architecture configuration includes an on-board power supply network, two main engines, and a system for converting mechanical energy into electrical energy between a main gearbox to the propulsion members and a mechanism receiving electrical energy including the on-board network and power electronics in conjunction with starters of the main engines. An auxiliary power engine provides electrical energy to the mechanism for receiving electrical energy via the energy conversion system and a mechanism for mechanical coupling between the auxiliary engine and at least one propulsion member.

Abstract: The invention aims to form equipotential connections between the various parts of a current return network. For this purpose, the invention provides a loom having a layer of conductors coated in a leak-proof jacket. A connecting loom (30) of this type is suitable for connecting structural metal pieces in an available volume between a protection structure and a transverse frame made of composite carbon material or a cabin lining. In one embodiment, it comprises conductors (51) arranged parallel side by side which form a planar flexible layer (50), multi-point modular terminal connectors (32) and multi-point modular intermediate connectors (34), a protective jacket consisting of an external jacket (60) covering the layer in portions (60T) and a shared jacket (62) covering the edges (32b, 34b; 60b) of the connectors (32, 34) and of the external jacket (60) in portions (62T). Openings (54, 56) are formed on the connectors (32, 34) for fixing means.

Abstract: A three-phase transformer including a primary portion and a secondary portion, the primary portion including a first body made of ferromagnetic material and primary coils, the secondary portion including a second body made of ferromagnetic material and secondary coils, the first body defining a first annular slot of axis A and a second annular slot of axis A. The primary coils include a first toroidal coil of axis A in the first slot, a second toroidal coil of axis A in the first slot, a third toroidal coil of axis A in the second slot, and a fourth toroidal coil of axis A in the second slot, the second coil and the third coil being connected in series.

Abstract: An electrical control and power supply system for at least one helicopter motor/generator, the system including a first DC/AC converter selectively delivering AC electrical power to the at least one motor/generator, depending on respective positions of contactors of a connection matrix actuated from an electronic control circuit, the first DC/AC converter powered with DC by a DC power supply device that includes either a circuit for rectifying an AC voltage delivered via a contactor by a starter/generator of an APU, or a voltage booster DC/DC converter powered from a battery via a contactor. The connection matrix further includes a contactor connecting the first DC/AC converter in parallel with the second DC/AC converter to make it possible, once at least one of the motors/generators has started, to inject additional power from the starter/generator of the APU.

Abstract: A three-phase/two-phase rotary transformer including a three-phase portion and a two-phase portion that are movable in rotation relative to each other about an axis A. The three-phase portion includes a first body made of ferromagnetic material and three-phase coils, the two-phase portion including a second body made of ferromagnetic material and two-phase coils. The second body defines a first annular slot of axis A and a second annular slot of axis A, the two-phase coils including a first toroidal coil of axis A in the first slot, a second toroidal coil of axis A in the first slot, a third toroidal coil of axis A in the second slot, and a fourth toroidal coil of axis A in the second slot, the first coil and the fourth coil being connected in series, the second coil and the third coil being connected in series.

Abstract: A rotary three-phase transformer with free linked fluxes including a first portion and a second portion that are movable in rotation relative to each other about an axis A. A first body defines a first annular slot of axis A, a second annular slot of axis A, a third annular slot of axis A, and a fourth annular slot of axis A. The coils of the first portion include a first toroidal coil of axis A in the first slot, a second toroidal coil of axis A in the second slot, a third toroidal coil of axis A in the second slot, a fourth toroidal coil of axis A in the third slot, a fifth toroidal coil of axis A in the third slot, and a sixth toroidal coil of axis A in the fourth slot.

Abstract: A connection which is reproducible, uniform and reliable both for intermediate and terminal connections of a conductor layer wiring loom, by making provision for simultaneous crimping of the conductors in connectors by applying continuous and uniform pressure in a crimping zone. The crimping is carried out by a tool including two shells, each shell including a main wall that forms an inner face including transverse ribs and end edges folded over perpendicularly relative to the walls to define an inner space. In the inner space, a connector of non-insulated conductors arranged perpendicularly relative to the ribs is introduced to form transverse grooves by compression of the ribs on the walls of the connector. The tool can find use in current return networks of aircraft passenger cabins having composite skin.

Abstract: The object of the invention is to produce equipotential connections that are electrically efficient in terms of resistivity between portions of a current-return network in a non-conductive architecture, such as an airplane fuselage. The approach adopted by the invention is to impart an equipotential-bonding function to an aluminum cable having a large cross section, said bond being electrically connected, via direct contact, to as many devices as is physically possible to connect thereby. According to one embodiment, an electrical connection assembly of an aircraft fuselage (100) having a composite skin comprises in-line shunt connections (2) for electrically interconnecting an aluminum-alloy-based cable (1) of large cross section acting as an equipotential connection to brackets (113, 141) for primary current-return networks and to brackets (111) for electrical devices via connectors (202).