Abstract: A tank has a generally prismatic shape, and is capable of containing a pressurized gas. The tank comprises a composite shell, which has fibrous reinforcements and a matrix extending continuously over the six faces of the prism and delimits a sealed internal cavity comprising a plurality of open cells. The tank comprises continuous fibrous reinforcements extending into and bonded to the composite shell and further extending through the internal cavity between two opposite faces of the tank. The tank is advantageously integrated into the floor of a vehicle, in particular to the structure of an aircraft.

Abstract: A pressurized gas containment liner includes a first part comprising a first shell with a first peripheral edge, and a second part comprising a second shell with a second peripheral edge. A strip is superimposed on the first peripheral edge and on the second peripheral edge. The strip rigidly connects the first part and the second part to each other, and the first part, the second part, and the strip delimit an interior volume between them. The pressurized gas containment liner further includes at least one pillar passing through the interior volume and connecting the first and the second shells.

Abstract: A pressurized gas containment liner includes a first part comprising a first shell with a first peripheral edge, and a second part comprising a second shell with a second peripheral edge. The first peripheral edge is rigidly connected to the second peripheral edge, and the first shell and the second shell delimit between them an interior volume. The first part comprises at least one pillar that passes through the interior volume, is formed integrally with the first shell, and is elongated between a proximal end, connected to the first shell, and a distal end, rigidly connected to the second part. A transverse section of the pillar decreases from the proximal end to the distal end.

Abstract: A pressurized gas containment liner includes a first part comprising a first shell, a second part comprising a second shell, and at least one intermediate part, arranged between the first part and the second part, in an assembly direction. The intermediate part is rigidly connected to the first and second parts. The first part, the second part, and the at least one intermediate part together delimit an interior volume. The or at least one of the intermediate parts comprises an intermediate shell and at least one pillar elongated in an elongation direction and connecting two opposite portions of the intermediate shell, and passing through the interior volume perpendicular to the assembly direction. The pillar and the intermediate shell are integral.

Abstract: A method for producing a composite tank is disclosed. The tank has a continuous fiber reinforcement, a prismatic shape, and a thickness “e” for the storage of a pressurized gas in an internal cavity of the tank. The tank comprises fibers extending between two non-contiguous faces of the tank through the internal cavity. The method includes: (i) obtaining a prismatic fibrous preform having a thickness “e” comprising three-dimensional continuous reinforcements throughout its thickness; (ii) impregnating an outer layer of the preform with a polymer over a thickness of less than ¼ of the thickness “e” so as to constitute a composite outer shell extending over all faces of the prism; and (iii) forming a sealed layer constituting an inner lining, having a thickness of less than 1/10th of the thickness “e” between the outer shell and the fibrous network contained in the cavity of the tank.

Abstract: The invention relates to a process for manufacturing a textile preform from a fibrous array with continuous fibres, the process comprising a step for heating of the fibrous array between a matrix and a punch to stiffen this fibrous array. To cut down processing time, the heating step is performed by having a hot gas flow circulate through the matrix, the fibrous array and the punch.

Abstract: The invention relates to a process for manufacturing a textile preform from a fibrous array with continuous fibres, the process comprising a step for heating of the fibrous array between a matrix and a punch to stiffen this fibrous array. To cut down processing time, the heating step is performed by having a hot gas flow circulate through the matrix, the fibrous array and the punch.

Abstract: An integrated capacitive transducer (1) which includes a membrane having a movable part (4) with an electrode, a fixed plate (6) with a counter-electrode (8), and an electrode and counter-electrode support structure (10). The fixed plate (6) also has an electret (30) which is disposed facing the movable part (4), is separated from the membrane by an open space (16), and has a first electrically conductive layer (32) embedded in an insulating material (34, 36). The invention has particular applications in hearing aids.

Abstract: The obturators can be actuated in order to modulate an incident beam (L). Microshutters (5) are attached to a substrate by means of fastenings opposing resistance to their rotation away from a rest position. The microshutters (5) are placed on optical paths (X--X) so as to be able to interrupt them or establish them. They are fitted out with reflecting surfaces (7) so as to deflect the light when they are in the blocking position. On each optical path (X--X) a supplementary reflecting surface (8), a diaphragm (6) and a focusing means (4) are placed. Thus, in line with its position, each microshutter can focus the light on the diaphragm (6) so as to allow it to pass or to deflect it in order to block it. The application thereof is in the transformation of a beam (L) into a modulated beam (Lm).

Abstract: The invention concerns a fabrication process of at least one generally elated structural element (14) on a substrate (12) in a first material and having a substantially flat upper face (13), said element (14) realized in a second material comprising at least a first wing (14a) parallel to a plan perpendicular to said upper face (13).