Abstract: The invention relates to a telescopic actuator comprising a cylinder in which a main rod is mounted to slide telescopically along a sliding axis between a retracted position and an extended position. The actuator includes an auxiliary rod mounted to slide telescopically in the main rod along said sliding axis between a retracted position and an extended position, the actuator including controlled retaining means for retaining the auxiliary rod in the retracted position inside the main rod.

Abstract: The present invention relates to an inductive heating apparatus, particularly using a liquid deposition precursor, for densifying porous articles. The inductive heating apparatus using induction coils that are made from machined or milled flat metal plates, such as copper plate, instead of bending a member (especially a hollow member) into a coil shape. The induction coils according to the present invention can be more precisely and more consistently fabricated than conventional bending techniques.

Abstract: The invention relates to an electrical power distribution architecture specially adapted for actuating in sequence aircraft moving elements such as doors, undercarriages, or high-lift elements, said moving elements being actuated by electromechanical actuators powered in sequence from electrical power delivered by at least one electrical power bus of the aircraft.

Abstract: The invention relates to a method of controlling a vehicle brake adapted to exert a braking force in response to an actuation setpoint, in which: from a braking setpoint including low frequency components and high frequency components, a nominal actuation setpoint is determined for the brake actuator that takes account of all of the components of the braking setpoint; from the same braking setpoint, and from a measurement of the torque developed by the brake, a correction for the nominal actuation setpoint is determined, the correction taking account only of low frequency variations in the braking setpoint, the correction being adapted to take account of current or future operating conditions of at least said brake or of brakes subjected to the same braking setpoint; and the correction is added to the nominal setpoint.

Abstract: The invention relates to a method of managing a steering control for a steerable portion of an aircraft undercarriage, the method comprising implementing servo-control to servo-control an electromechanical steering actuator on an angular position setpoint, wherein, according to the invention, the servo-control implements a control relationship H? type, the position and speed information being delivered by means of a fieldbus of deterministic type to a computer that implements the servo-control.

Abstract: The invention relates to a power distribution architecture for an aircraft for powering aircraft electromechanical actuators, the architecture comprising at least one power distribution member for distributing power to such and such an electromechanical actuator connected to the architecture, the architecture receiving power from at least one power supply bus of the aircraft. According to the invention, a DC network of voltage that is variable in controlled manner is interposed between the power supply bus of the aircraft and the power distribution members.

Abstract: The invention relates to a power distribution architecture for an aircraft for powering aircraft electromechanical actuators, the architecture comprising at least one power distribution member for distributing power to such and such an electromechanical actuator connected to the architecture, the architecture receiving power from at least one power supply bus of the aircraft. According to the invention, a DC network of voltage that is variable in controlled manner is interposed between the power supply bus of the aircraft and the power distribution members.

Abstract: A method of controlling power applied to an induction coil assembly used for densifying porous articles with a liquid matrix precursor. The control of applied power addresses dynamic changes in the electrical characteristics of the porous article being densified as it becomes denser. In particular, the power applied is controlled in accordance with changes in resonant frequency of the coupled system of the induction heating system and the porous article.

Abstract: The invention relates to a method for managing a steering control of an aircraft landing gear provided with at least one wheel steerable by the steering control, comprising the following steps: monitoring one or several taxi parameter(s) (51, 54, 64, 59, 61) of the aircraft to determine whether said aircraft enters a towing situation, setting the steering control in a free steering mode of the steerable wheel, if the aircraft enters the towing situation; activating the steering control so that the steerable wheel has an angular controlled steering by the steering control if the aircraft leaves said towing situation.

Abstract: A load comprising one or more porous substrates (10) for densification is heated in an oven into which a reaction gas containing at least one carbon-precursor hydrocarbon is admitted, the effluent gas being extracted from the oven via an extraction pipe (26) connected to an outlet from the oven. The content in the effluent gas of at least one compound selected from allene, propine, and benzene is measured, and as a function of the measured content, the process is controlled by adjusting at least one parameter selected from the rate at which the reaction gas is admitted into the oven, the rate at least one component of the reaction gas is admitted into the oven, the transit time of the gas through the oven, the temperature to which the substrate(s) is/are heated, and the pressure that exists inside the oven. The at least one parameter is adjusted in such a manner as to maintain the measured content at a value which is substantially constant.

Abstract: The invention relates to a container for receiving different types of heat pack, the container comprising a base carrying a central support suitable for receiving equally well one or another of the heat packs, wherein the support includes at least a plurality of respective seats that are staggered so that each receives one of the heat packs, each seat being adapted to co-operate with at least an annular surface portion of the corresponding heat pack.

Abstract: The invention relates to a stabilizer suitable for stabilizing disks of a heat pack, wherein the stabilizer includes at least two elongate parallel pushers of height compatible with the height of the heat pack, each movable in a direction perpendicular to the pushers, the pushers being associated with an irreversible driver system enabling the pushers to be moved apart or towards each other, the pushers extending in service so as to face an inside diameter of the disks.

Abstract: The invention relates to a bar for an aircraft wheel, the bar comprising an oblong body (2) extended at each end by respective endpieces (4, 5) extending parallel to the body and parallel to each other, the endpieces being offset relative to each other. The invention also relates to a wheel specially adapted to receive such a bar.

Abstract: The invention relates to an actuator for an electromechanical brake, the actuator comprising a pusher and a first drive member arranged to move the pusher in register with a stack of disks and to apply a braking pressure to the stack of disks, the actuator including a second drive member comprising a piezoelectric assembly suitable for modulating the braking pressure applied to the stack of disks. According to the invention, the piezoelectric assembly is disposed inside the actuator so as to present an end that is stationary.

Abstract: The present invention relates to a telescopic actuator comprising a cylinder 1 receiving a main rod 2 to slide along a sliding axis X between a retracted position and an extended position, the actuator further including an auxiliary rod 20 slidable in the main rod 2 between a retracted position and an extended position, and a rotary bearing 102 carried by the main rod 2 or the auxiliary rod 20 and co-operating respectively with the auxiliary rod 20 or the main rod 2 via a reversible helical connection. According to the invention, the actuator includes retaining means 112 for retaining the sliding of the auxiliary rod 20 and comprising a blocking member 116 arranged to act directly on the rotary bearing so as to cause rotation of the rotary bearing 102 to be blocked or to be released, blocking rotation of the rotary bearing 102 preventing the auxiliary rod 20 from moving in the main rod 2.

Abstract: The invention relates to a force-measurement cell for insertion in a bore of a pin, the cell comprising a bushing: having a generally cylindrical tubular wall with an outside surface adapted to extend against an inside surface of the bore in the pin; and within which there extends at least one sensor suitable for measuring at least one parameter representative of the stresses to which the wall is subjected. The invention also relates to a pin provided with such a force-measurement cell.

Abstract: The invention relates to an aircraft filter device comprising a hydraulic block adapted to receive removably a filter (2) comprising a vessel (3) receiving a cartridge (4), wherein the vessel is fitted internally with a pin (6) of elastically deformable material comprising firstly a key (8) that extends towards the opening of the vessel and that includes a curved end (9) that projects beyond an edge of the vessel, and secondly a finger (10) that extends towards the bottom of the vessel, and that is oriented towards the center thereof, so that when a cartridge is put into place in the vessel, the finger is pushed back by the cartridge and forces the key to retract so that its curved end no longer projects radially from the vessel, the cartridge being fitted with an external obstacle (14) that co-operates with one end of the finger in order to prevent the cartridge being withdrawn from the vessel.

Abstract: A method of fabricating a friction part out of carbon/carbon composite material, the method including obtaining a three-dimensional fiber preform of carbon fibers impregnated with a solution or a suspension enabling a dispersion of refractory metal oxide particles to be left on the fibers of the preform; applying heat treatment to form a metallic carbide by a carboreduction reaction of the refractory oxide with the carbon of the fibers; continuing the heat treatment until the carbide is transformed into carbon by eliminating of the metal; and then densifying the preform with a carbon matrix by chemical vapor infiltration.

Abstract: The invention relates to a filter device comprising a hydraulic block (1) receiving a removable filter (2) that is screwed into a first internal thread (8) of the hydraulic block. The hydraulic block receives a retaining member (101) suitable for retaining the filter axially when the filter is screwed to the hydraulic block, the hydraulic block including a second internal thread (8) that is on the same axis as the first internal thread and that receives a fastener member (102) for fastening the retaining member to the hydraulic block, the fastener member being screwed into the second internal thread with toque that is sufficient to prevent the retaining member escaping in service.

Abstract: The invention relates to a method of treating the surface of a mechanical part made of high-strength steel, the method seeking to confer on said part friction and lubrication properties that are needed for its use.