Abstract: A diaphragm holder for an oleo-pneumatic-type shock absorber includes a tubular body made of thermoplastic material, having a first end arranged to hold a diaphragm provided with flow restricting orifices and an opposite second end defining an arched bottom for withstanding pressure forces. Each of the two ends is provided with a localised mechanical reinforcement element forming an axial stop arranged to allow tensile stressing of the tubular body.

Abstract: A diaphragm holder for an oleo-pneumatic-type shock absorber includes a tubular body made of thermoplastic material, having one end arranged to hold a diaphragm and an opposite end defining an arched bottom for withstanding pressure forces. An insert is housed in the bottom of the tubular body and is arranged to mechanically reinforce the bottom and to distribute the pressure forces evenly.

Abstract: A metering needle for an oleo-pneumatic-type shock absorber includes a base made of thermoplastic material, from which projects a rod arranged to control the flow of a hydraulic fluid through an orifice. The base has an arched bottom for withstanding pressure forces, in which is mounted an insert arranged to mechanically reinforce the arched bottom and distribute the pressure forces evenly.

Abstract: The invention concerns a foot-operated controller, comprising a top platform (1) having a top surface for receiving the feet, a bottom cup (2) having a lower surface (20) of curved convex shape for rotating (1) on its lower surface (20), wherein the top platform (1) is attached to the bottom cup (2), rotation sensors (7b) for measuring rotations of the top platform (1) about a first yaw axis (Z), a second roll axis (X) and a third pitch axis (Y).

Abstract: The invention concerns a foot-operated controller, comprising a top platform (1) having a top surface for receiving the feet, a bottom cup (2) having a lower surface (20) of curved convex shape for rotating (1) on its lower surface (20), wherein the top platform (1) is attached to the bottom cup (2), rotation sensors (7b) for measuring rotations of the top platform (1) about a first yaw axis (Z), a second roll axis (X) and a third pitch axis (Y).

Abstract: The invention relates to fiber reinforcement for making an elongate mechanical part (10) out of composite material having a lug (14) at at least one end for receiving a pin for making a pivot connection with another part, the fiber reinforcement being made from a central fiber structure (106; 106?) for forming a core that is obtained by three-dimensional weaving, from a peripheral fiber structure (16; 16?) that is to form a belt surrounding the central structure so as to form at least one empty cylindrical space in the lug of the part, and from at least one annular fiber structure (112; 112?; 112?) that is to form a ring that is formed inside the empty space provided between the central structure and the peripheral structure.

Abstract: The invention relates to fiber reinforcement for making an elongate mechanical part (10) out of composite material having a lug (14) at at least one end for receiving a pin for making a pivot connection with another part, the fiber reinforcement being made from a central fiber structure (106; 106?) for forming a core that is obtained by three-dimensional weaving, from a peripheral fiber structure (16; 16?) that is to form a belt surrounding the central structure so as to form at least one empty cylindrical space in the lug of the part, and from at least one annular fiber structure (112; 112?; 112?) that is to form a ring that is formed inside the empty space provided between the central structure and the peripheral structure.

Abstract: A device for selectively opening and closing a fuselage coupled to a towed submarine object. The device comprises first and second shells articulatable with respect each other by a hinge assembly. A releasable locking system locks the shells on each other. Hinge members of the hinge assembly are slidable with respect to each other along the articulation axis of the shells in order to actuate the locking or unlocking of these shells.

Abstract: A submarine vehicle able to control the navigation of a towed submerged object (3). The vehicle includes a body (5) equipped with stabilizing fins (7a, 7b, 7c), at least one of which (7c) is free to rotate and is ballasted, or linked to a ballast, for roll stabilization and/or orientation of the vehicle when it is in motion.

Abstract: A device for selectively opening and closing a fuselage coupled to a towed submarine object. The device comprises first and second shells articulatable with respect each other by a hinge assembly. A releasable locking system locks the shells on each other. Hinge members of the hinge assembly are slidable with respect to each other along the articulation axis of the shells in order to actuate the locking or unlocking of these shells.

Abstract: A submarine vehicle able to control the navigation of a towed submerged object (3). The vehicle includes a body (5) equipped with stabilizing fins (7a, 7b, 7c), at least one of which (7c) is free to rotate and is ballasted, or linked to a ballast, for roll stabilization and/or orientation of the vehicle when it is in motion.

Abstract: The invention relates to a method for determining the effects of a mechanical force on an object consisting of a solid material, according to which the deformations and stresses caused by the mechanical force at a plurality of points on the object are determined by means of a digital calculation method in an anelastic mode wherein the behaviour of the material is represented by a polycrystalline microscopic behaviour model using a maximum of ten grain blocks, the deformations of said grain blocks being determined from a maximum of six sliding systems, and optionally a maximum of seven grain joint blocks, the deformations of said grain joint blocks being determined from at least one system and a maximum of one hole block having a variable volumic fraction, the plastic deformations of said hole block being purely volumic.

Abstract: The joint prosthesis according to the invention is characterized in that it comprises two substantially concentric convex opposite surface portions (1, 2). Preferably the convex surface portions are portions of a sphere which are connected together by a frustoconical portion (3) and one (1) of the convex surface portions has a greater radius of curvature than the other (2).