Abstract: A multi-branch fitting includes at least three branches, molded from a composite material and, more precisely, from a fiber-reinforced thermoplastic or thermoset matrix. The fitting is intended for assembling components which are at an angle to one another. There are at least three flat or substantially flat branches or flanges extending radially from a joining zone, and at least one face or part of a face constituting a bearing face for one or more of the components that are to be attached. The joining zone has a cross section, in the transverse direction, in the shape of a polygon with concave sides. The connection of each of the branches or flanges with another adjacent branch or flange is achieved through a portion in the shape of a curved blade which gives the joining zone one of its concave shapes.

Abstract: A connecting rod for an aeronautical actuator system, having one shaft transmitting forces applied in tension and/or compression along a longitudinal axis of the rod. When the connecting rod is in service, an elastically deformable element connected to the shaft is configured to react to the forces applied to the shaft, and displays elastic deformation when effected by these forces. The deformable element has a peripheral part rigidly connected to a member of the rod in which the shaft is slidably mounted. Measurement means associated with the deformable element determine the forces. The measurement means is partially housed in the deformable element. The deformable element includes a central part elongated along the longitudinal axis, which is rigidly connected to the shaft and in which the measurement means are at least partially housed. An intermediate part runs transversally to the central part and connects the central part and the peripheral part.

Abstract: The invention relates to an angle bracket including a composite material for connecting parts. The angle bracket has two wings forming an angle along a longitudinal folding axis and coupling regions on the outside of the fold. The coupling regions attach to parts to be connected, and is associated with a securing means. At least in the longitudinal direction, the angle bracket has at least one succession of domed sections with a concave or convex profile on the inside and/or outside of the fold, providing the bracket with a corrugated form in the longitudinal direction.

Abstract: A method of manufacturing a ball joint assembly including providing an internal centerpiece substantially in the shape of a hollow truncated sphere, placing the centerpiece within a metal hollow sleeve and deforming the sleeve by forcing the sleeve against an outer surface of the centerpiece to shape the sleeve to complement the outer surface of the centerpiece, forming at least one groove in an exterior surface of the sleeve and there after molding a plastic matrix composite material over the exterior surface of the sleeve to form an external body over the sleeve.

Abstract: A signaling device for signaling heating in a mechanical system susceptible to undergo contact heating during operation. The signaling device includes a body containing a thermally triggered charge generating combustion gas, ignition of the charge able to be triggered under the effect of a predetermined heat contribution, from a heating area of the body toward the charge, or under the action of an ignition command, a reservoir containing a fluid, and delivery means delivering pressurized fluid outside the reservoir through the action, directly or through an intermediate member moving in the reservoir, of the combustion gases. The signaling device also comprises at least one visual signaling element for visually signaling combustion of the charge, the visual signaling element being visible at an outer peripheral area of the signaling device after combustion of the charge. The invention also relates to a mechanical system equipped with at least one such signaling device.

Abstract: A part made of a composite is intended to be subjected, through at least a point of attachment and in cooperation with connectors, to tensile and/or compressive forces. The part includes a monolithic part having a winding of fibers oriented and embedded in a matrix, and a tubular body, wherein an attachment point, based at one end of said tubular body takes the form of a strap forming a loop turning about an axis perpendicular to the axis of the tubular body, and wherein an internal wall and/or the external wall of the loop is designed to cooperate with a portion of the connector in tension and/or in compression along one or more directions.

Abstract: A reduction gear includes a stationary sun gear, a coaxial mobile sun gear, planet gears, and a planet carrier. In order to ensure easy, reliable assembly for the reduction gear, while transmitting high torques having a considerable speed reduction, the helical gear teeth of the stationary and mobile sun gears are reversed relative to one another and are mutually separated in the direction of the main axis of rotation, thus forming a free space between them, which is suitable for adjusting the axial position of the planet gear or gears when assembling the reduction gear, such as to engage the first and second gear teeth of the planet gear with the respective gear teeth of the stationary and mobile sun gears.

Abstract: A method of manufacturing a ball joint assembly including providing an internal centerpiece substantially in the shape of a hollow truncated sphere, placing the centerpiece within a metal hollow sleeve and deforming the sleeve by forcing the sleeve against an outer surface of the centerpiece to shape the sleeve to complement the outer surface of the centerpiece, forming at least one groove in an exterior surface of the sleeve and there after molding a plastic matrix composite material over the exterior surface of the sleeve to form an external body over the sleeve.

Abstract: A transmission shaft for transmitting rotational movements including a tubular body having at least one tubular composite assembly including a plastic matrix and strengthening elements, at least one insert positioned at one end of the body and which is secured to the body in an interface area between the insert and the composite assembly, and at least one slug passing radially through the insert and the body for keeping the strengthening elements in place. The at least one insert has at least one recess receiving a part of the strengthening elements to maintain the strengthening elements in the interface area.

Abstract: The invention relates to a method for manufacturing a composite part intended for being subjected, via at least one attachment point, to pulling and/or compression forces. The method includes: winding fibers on a hub so as to form a portion of the wall of the part, and creating an externally convex rounded area at the location intended to form the area for applying the pulling and/or compression forces. The forces are radial thereto. The method also includes placing an insert on the convex rounded area, the insert including the attachment point or a mechanism for rigidly connecting the attachment point, and continuing to wind fibers so as to form the rest of the wall, while covering a portion of the insert and leaving the attachment point or the mechanism for rigidly connecting the attachment point accessible.

Abstract: The present invention relates to a flight unit control system (S), comprising at least one instrumented fastening bolt (6) connecting an aircraft carrier structure (34) and a load path (36a, 36b), the instrumented bolt having at least one measurement area (61; 62) for detecting that the load path in under load. The system comprises fastening means (4, 11) capable of locking the instrumented bolt (6) in a position relative to the aircraft carrier structure (34) and to the load path (36). The or each measurement area (61; 62) of the instrumented bolt (6) comprises two cavities and at least one strain gauge.

Abstract: A composite part including a fibrous assembly including at least two preforms each of which includes layers of fibrous cloths. Each preform includes at least one opening or protruding structure which is substantially complementary to the structure of the other preform. The first and second preforms are engagement with one another and are firmly connected by a polymer matrix being injected around the preforms.

Abstract: A rotary torque shaft including a tube made of a composite material having a plastic matrix and a metallic tubular insert fixedly mounted around a recessed longitudinal outer surface portion of the tube so as to link the tube mechanically to a functional mechanical assembly which is supported by the insert. The insert has in cross section a non-circular inner surface profile which is complementary in shape to a profile of the outer surface of the tube.

Abstract: The invention relates to a force transmission unit (1), particularly enabling the transmission of forces between a lever and a steering member, including: —a force transmission device (8) comprising a shaft (81) defining a central axis (X-X), and —a force accompanying device (3) comprising: —a cam (71), the shaft and the cam being suitable for being rotatably mobile in relation to one another, —a push member (6) suitable for engaging with the cam and for translating along the shaft, and —and a resilient member (9) suitable for working under compression during a translation movement of the push member (6), said translation movement being caused by activating the transmission unit. The push member (6) includes, at the same time, a body (68) designed for receiving cam followers (621; 622) suitable for engaging with the cam (71), and a linear bearing (64) arranged in the body, the bearing being suitable for engaging with the shaft (81).

Abstract: According to this method, plastic welding is used to secure one longitudinal end (11) of a tube (10) made of thermoplastic to a dedicated part (21), made of thermoplastic, of an end piece (20) designed to be joined in an articulated manner to a structural component. According to the invention, the tube is manufactured by extruding thermoplastic in order to obtain a hollow section piece one length of which constitutes the tube and which, at the longitudinal end of the tube, has at least one flat surface (12, 13) parallel to the longitudinal axis (X-X?) of the tube, and in order to perform the plastic welding, the said at least one flat surface of the longitudinal end of the tube is mated against a corresponding flat surface (22, 23) belonging to the dedicated part of the end piece, then the mated flat surfaces are welded together.

Abstract: The assembly comprises an inner ring, an intermediate member housing the inner ring about a joint axis and, an outer body retaining the intermediate member. The intermediate member defines two first surfaces formed by cylinder portions having the same first axis of revolution which intersects the joint axis. The outer body defines two surfaces formed by cylinder portions having the same second axis of revolution. When the assembly is in an assembled state, the first axis of revolution coincides with the second axis of revolution and the first and second surfaces co-operate to enable the intermediate member to rotate relative to the outer body about the first axis of revolution but to prevent the intermediate member from moving parallel to the joint axis or parallel to an axis orthogonal to the joint axis and to the second axis of revolution.

Abstract: The light articulation ball-joint comprises a metal inner ring and a metal outer ring, provided respectively with a spherical outer surface and a spherical inner surface. The ball-joint also comprises a first contact layer, applied to the spherical surface of one of the rings, and a second contact layer, applied to the spherical surface of the other ring. According to the invention, the first contact layer has a hardness which is less than the hardness of the second contact layer and a thickness which is greater than the thickness of the second contact layer, the first contact layer further being adapted to release particles of solid lubricant by friction with the second contact layer.

Abstract: The light articulation ball-joint comprises a metal inner ring and a metal outer ring, provided respectively with a spherical outer surface and a spherical inner surface. The ball-joint also comprises a first contact layer, applied to the spherical surface of one of the rings, and a second contact layer, applied to the spherical surface of the other ring. According to the invention, the first contact layer has a hardness which is less than the hardness of the second contact layer and a thickness which is greater than the thickness of the second contact layer, the first contact layer further being adapted to release particles of solid lubricant by friction with the second contact layer.

Abstract: This anti-rotation lock device (2) for preventing movement in an assembly comprising an endpiece (210) carrying a thread (211) screwed into a tube (200), together with a nut (280) suitable for being screwed on the endpiece (210) comprises: a first washer (220) provided with an anti-rotation lock component; and a second washer (240) comprising at least one key. The first or the second washer (220, 240) includes a lug, and the faces of the first and second washers (220, 240) comprise means for locking them mutually against rotation. The device further comprises a third washer (260) including a member (268, 269) for locking the nut (280) against rotation. The outer periphery of the third washer (260) comprises a tab (265) adapted to co-operate with said lug (225) so as to lock the first or the second washer (220, 240) provided with the lug (225) against rotation relative to the third washer (260).

Abstract: This shaft comprises firstly a tube made of a composite material having a plastic matrix and secondly a metallic tubular insert arranged fixedly around a longitudinal portion of the tube and designed to link the tube mechanically to a functional mechanical assembly which is supported by the insert and is for instance a pin. To significantly improve the mechanical performance of this shaft in torsion, the insert has in cross section a noncircular inner profile, for example an oblong shape, to which the outer surface of the tube is adapted in a substantially complementary manner.