Abstract: An application head specially designed to produce parts made of composite materials, comprising an application system, guiding means defining a guiding plane, a cutting system for cutting a fiber, the cutting system comprising a first blade movable in translation along a cutting direction and provided with a bevel defining a first cutting edge and a second blade movable in translation along the cutting direction and provided with a bevel defining a second cutting edge, the bevels being opposed to allow an overlapping of the cutting edges.

Abstract: A fiber application head for the production of composite material parts, including a compacting roller having a rigid central tube, at least one cylindrical piece made of an elastically deformable flexible material, assembled on the central tube and a plurality of independent rigid rings stacked side by side on the cylindrical piece. Each cylindrical piece includes a cylindrical outer surface by which each ring is intended to come to bear against the lay-up surface, and two collars mounted on the central tube, on either side of the cylindrical piece, being able to block in translation the stack of rings on the cylindrical piece.

Abstract: A fiber application head comprising a compaction system including a plurality of independent compaction rollers and compaction cylinders and, for each fiber, cutting means and rerouting means. For each fiber, the head comprises a functional module including the cutting means and the rerouting means, each functional module is mounted so as to be movable in translation on a support element of the head. Each compaction roller is mounted on one or more adjacent functional modules. A compaction cylinder is associated with the functional module(s) associated with a compaction roller for the displacement in translation of the functional module(s). An independent heating system is associated with each compaction roller, and able to displace with the functional module(s) associated with a compaction roller.

Abstract: A method for producing a composite material. The method includes the steps of producing an initial dry preform, formed from unidirectional continuous dry fibers, applying non-woven filaments to a first main face of the dry preform, and needling the filaments with a needling device. The needling device includes a plurality of needles, each provided with at least one notch, so that filaments are driven by the needles and arranged in a direction substantially perpendicular to the continuous fibers of the dry perform. The method includes the further step of impregnating the dry preform with an impregnation polymer, the impregnation polymer constituting the matrix of the composite material part.

Abstract: A fibre application head for producing composite material parts, comprising a compacting system comprising a compacting roller for applying one or more fibres onto an application surface, and a heating system capable of emitting thermal radiation towards the fibre or fibres. The head further comprises a blowing system comprising an air blowing nozzle, the nozzle being arranged upstream from the roller, with respect to the movement direction, and being capable of forming an air knife, parallel to the axis of the roller, towards the nip zone between the compacting roller and the layup surface.

Abstract: A fiber application head for producing composite material parts, comprising a compacting system comprising a compacting roller comprising a rigid central tube and at least one cylindrical part made of a flexible material and assembled on said central tube, and an anti-adherent sheath covering the cylindrical part, and a heating system that is able to emit thermal radiation in the direction of the (s). The anti-adherent sheath has lateral portions extending beyond the cylindrical surface of the cylindrical part in the direction of the rotation axis of the roller, the assembly of the anti-adherent sheath to said cylindrical part being carried out by the lateral portions.

Abstract: A method for producing preforms, by layup of fibers on a layup surface, comprising the application of a binder on at least one continuous flat dry fiber, comprising two opposite main faces, and the layup of the fiber provided with binder by means of a layup head in order to form a preform. The application of binder on a fiber is carried out by means of at least one fiberizing nozzle comprising a discharge orifice supplied with liquid or pasty binder, and one or several injection orifices supplied with pressurized gas, in such a way that said nozzle is able to deliver the binder in the form of a spiral filament, the spirals of filament being deposited on a first main face of the fiber running underneath the nozzle in order to obtain a fiber provided with filaments of binder.

Abstract: The invention relates to a fiber application head for manufacturing composite material pars and to a corresponding manufacturing method, said head including: an application roll for applying a band formed of one or more fibers onto an application surface; a main guide system for guiding at least one fiber towards said application roll; a heating, system capable of emitting thermal radiation towards the band just before application by the application roll; a cooling system capable of cooling, the application roil from the outside, such as a gas flow; and a drive system capable of rotating the application roll when the roll is not in contact with the application surface.

Abstract: An aerial vehicle is includes a wing, first and second rotors, and a movement sensor. The first and second multicopter rotors are rotatably coupled to the wing, the first multicopter rotor is rotatable relative to the wing about a first lateral axis, and the second multicopter rotor is rotatable relative to the wing about a second lateral axis. Each multicopter rotor is coupled to each other multicopter rotor, wherein the multicopter rotors are restricted to collective synchronous rotation relative to the wing between a multicopter configuration and a fixed-wing configuration. The movement sensor is coupled to the multicopter rotors, wherein the movement sensor is positioned to rotate relative to the wing when the multicopter rotors rotate relative to the wing between the multicopter and fixed-wing configurations.

Abstract: A method for defining trajectories of fibers on a layup surface for producing at least one ply having a given theoretical orientation, by laying up fibers, including the steps of providing the definition of the constraint curves and/or the definition of at least one constraint grid with association of at least one constraint vector to each node of the constraint grid, the direction of a fiber at an analysis point of the layup surface, being obtained by calculation of the normalized weights of the constraint vectors of the constraint curves and/or by calculation by of the normalized weights of the constraint vectors of the constraint grid, and by weighting by the normalized weights of the constraint vectors.

Abstract: A fiber application machine comprising a fiber application head, a displacing system to displace said fiber application head, fiber storage, and a fiber conveyor to convey the fibers from the fiber storage to the application head. The machine further comprises a safety system comprising at least one perimeter barrier defining a safety zone wherein the displacing system carrying the application head is placed, the fiber storage being arranged outside of said safety zone.

Abstract: An aerial vehicle is includes a wing, first and second rotors, and a movement sensor. The first and second multicopter rotors are rotatably coupled to the wing, the first multicopter rotor is rotatable relative to the wing about a first lateral axis, and the second multicopter rotor is rotatable relative to the wing about a second lateral axis. Each multicopter rotor is coupled to each other multicopter rotor, wherein the multicopter rotors are restricted to collective synchronous rotation relative to the wing between a multicopter configuration and a fixed-wing configuration. The movement sensor is coupled to the multicopter rotors, wherein the movement sensor is positioned to rotate relative to the wing when the multicopter rotors rotate relative to the wing between the multicopter and fixed-wing configurations.

Abstract: An aerial vehicle is includes a wing, first and second rotors, and a movement sensor. The first and second multicopter rotors are rotatably coupled to the wing, the first multicopter rotor is rotatable relative to the wing about a first lateral axis, and the second multicopter rotor is rotatable relative to the wing about a second lateral axis. Each multicopter rotor is coupled to each other multicopter rotor, wherein the multicopter rotors are restricted to collective synchronous rotation relative to the wing between a multicopter configuration and a fixed-wing configuration. The movement sensor is coupled to the multicopter rotors, wherein the movement sensor is positioned to rotate relative to the wing when the multicopter rotors rotate relative to the wing between the multicopter and fixed-wing configurations.

Abstract: An aerial sensor system is disclosed. The system includes an aerial vehicle, a camera, and a sensor mounting assembly coupled to the aerial vehicle and to the camera. The sensor mounting assembly permits the camera to be positioned radially outwardly from the aerial vehicle in all spherical positions.

Abstract: A fiber application machine comprising a fiber application head, a displacing system to displace said fiber application head, a fiber storage, and a fiber conveyor to convey the fibers from the fiber storage to the application head. The machine further comprises a safety system comprising at least one perimeter barrier defining a safety zone wherein the displacing system carrying the application head is placed, the fiber storage being arranged outside of said safety zone.

Abstract: The hydrometallurgical copper extraction processes of the present teachings generally including two steps: a conditioning or activating step using low concentrations of ammonia and ammonium in an aqueous solution; and an acid leaching step. The processes of the present teachings can be performed at low temperature, for example, at ambient temperature, and at atmospheric pressure.

Abstract: A fiber application head for a fiber application machine for the production of parts made of composite materials, comprising a compacting roller, said compacting roller comprising several independent roller segments mounted side by side on an axial rod. Each roller segment comprises a tubular central portion through which said segment is mounted on the axial rod, a tubular peripheral portion having a cylindrical outer surface and one or more curved spring plate arranged between the outer surface (31a) of the central portion and the inner surface of the peripheral portion.

Abstract: The present invention relates to a fiber application machine, for making components out of composite materials, comprising a fiber application head, fiber storing means, and means for conveying the fibers from said storage means to the application head. The conveying means comprises first flexible tubes, that receive one fiber into its internal passage. Each flexible tube is provided with at least one longitudinal flexible blade of rectangular cross section. Each first flexible tube and its associated flexible blade are placed in a second flexible tube so that the second flexible tube holds the flexible blade substantially against the first flexible tube, while allowing relative longitudinal movement of the flexible blade in relation to the first flexible tube.

Abstract: A fiber application machine including a fiber application head with an application roller for the production of parts made of composite materials. The fiber application head further includes a guiding system to guide the fibers onto the application roller and/or means for the application of resin to each fiber as the fibers leave the guiding system. The fiber application machine can also include a fiber storing system and conveying means for conveying the fibers from the fiber storing system to the application head. The conveying means can comprise flexible tubes, each tube being able to receive a fiber in its inner channel. The conveying means can further include a tension limiting system positioned between the application head and the storing system. The fiber application machine can further include a system for moving the application head.

Abstract: A fiber application machine for the production of composite material parts, comprising a system for displacing a fiber application head, a fiber storage, and a fiber conveyor for conveying the fibers from the fiber storage to the application head, the fiber conveyor being placed in the internal passage of at least one flexible tubular sheath, the machine further comprising a cooling system adapted to inject cold gas in the internal passage of the sheath.