Abstract: An emergency extension system for extending at least one aircraft undercarriage, the emergency extension system comprising both electromechanical actuators, each electromechanical actuator having an identification component arranged to allocate an identifier to said electromechanical actuator, which identifier depends in particular on a function performed by said electromechanical actuator, and also an electrical card having a delay component arranged to delay actuation of a the electromechanical actuator by an actuation delay that depends on the identifier allocated to the electromechanical actuator, the electromechanical actuators of the emergency extension system thus being arranged to be actuated in succession in an actuation sequence that is defined by the actuation delays.

Abstract: The invention relates to a fan casing (200) for an aircraft turbomachine, such as a jet engine, said casing having a one-piece annular body (202), said body having a radially internal annular surface (206), a first annular portion (208) of which is made of abradable material, characterized in that a second annular portion (210) of said internal surface comprises blind holes (212) that confer acoustic properties on said second portion.

Abstract: A method for manufacturing a composite-material casing for a gas turbine, includes producing by three-dimensional weaving a fiber texture in the form of a strip, winding of the fiber texture around several superimposed turns on a mandrel with a profile corresponding to that of the casing to be manufactured in order to obtain a fiber preform of a shape corresponding to that of the casing to be manufactured, and densifying the fiber preform by a matrix. During the winding of the last turn of the fiber texture on the mandrel, at least one stiffening element is interposed between the before-last turn and the last turn of the fiber texture. The stiffening element projects over the outer surface of the before-last turn of the fiber texture. The stiffening element has an axial section of omega-type shape.

Abstract: A device (1) for connecting an end of a first shaft to an end of a second shaft, the end of the first shaft having a radial groove. The device includes a body (2) having a bore (21) into which the end of the first shaft can be introduced, a locking pin (3) movable with respect to the body (2) between a locked position, in which the pin (3) projects into the bore (21) such that, when the end of the first shaft is received inside the bore (21), the locking pin (3) is engaged in the radial groove in the end of the first shaft, and an unlocked position. In the unlocked position, the locking pin (3) is disengaged from the radial groove in the end of the first shaft, and an elastic return member (4) urges the locking pin (3) into the locked position.

Abstract: The invention relates to a device (1) for connecting an end of a first shaft to an end of a second shaft, the end of the first shaft having a radial groove, the device comprising:—a body (2) having a bore (21) into which the end of the first shaft can be introduced,—a locking pin (3) mounted so as to be movable with respect to the body (2) between a locked position, in which the pin (3) projects into the bore (21) such that, when the end of the first shaft is received inside the bore (21), the locking pin (3) is engaged in the radial groove in the end of the first shaft in order to prevent the end of the first shaft from being removed from the bore (21), and an unlocked position, in which the locking pin (3) is disengaged from the radial groove in the end of the first shaft so as to allow the end of the first shaft to be introduced into the bore (21) or to allow the end of the first shaft to be removed from the bore (21), and—an elastic return member (4) for urging the locking pin (3) into the locked position

Abstract: A method of moving a door of a well for an aircraft undercarriage during sequences of deploying or retracting the undercarriage includes: using a temporary mechanical connection between the door and the undercarriage that is effective when the undercarriage is close to its retracted position, causing the door to be opened by the undercarriage while the undercarriage is being deployed and causing the door to be closed by the undercarriage while the undercarriage is being retracted, but releasing the door from the undercarriage when the undercarriage is close to its deployed position, and using a door actuator acting on the door to close and open the door when the undercarriage is in its deployed position and the temporary mechanical connection is interrupted.

Abstract: An emergency extension system for extending at least one aircraft undercarriage, the emergency extension system comprising both electromechanical actuators, each electromechanical actuator having an identification component arranged to allocate an identifier to said electromechanical actuator, which identifier depends in particular on a function performed by said electromechanical actuator, and also an electrical card having a delay component arranged to delay actuation of a the electromechanical actuator by an actuation delay that depends on the identifier allocated to the electromechanical actuator, the electromechanical actuators of the emergency extension system thus being arranged to be actuated in succession in an actuation sequence that is defined by the actuation delays.

Abstract: The invention relates to a device comprising a lever associated with a stand carrying a rocker connected to the stand by a pivot connection about a first axis, the lever being connected to the rocker by a pivot connection about a second axis, a first transmission shaft with a first connection mechanism connecting the lever to the first transmission shaft, and a second transmission shaft with a second connection mechanism connecting the control lever to the second shaft. The first shaft and the first connection mechanism being connected by a pivot connection about a fifth axis that is inclined relative to the first axis and to the third axis, and the second shaft and the second connection mechanism are connected by a pivot connection about a sixth axis that is inclined relative to the second axis and to the fourth axis.

Abstract: The invention relates to a device comprising a lever (8) associated with a stand (1) carrying a rocker (4) connected to the stand by a pivot connection about a first axis (X), the lever being connected to the rocker by a pivot connection about a second axis (Y), a first transmission shaft (12) with a first connection mechanism connecting the lever to the first transmission shaft, and a second transmission shaft (23) with a second connection mechanism connecting the control lever to the second shaft. The first shaft and the first connection mechanism being connected by a pivot connection about a fifth axis (C) that is inclined relative to the first axis and to the third axis, and the second shaft and the second connection mechanism are connected by a pivot connection about a sixth axis (F) that is inclined relative to the second axis and to the fourth axis.

Abstract: The present invention provides a process for the digestion of organic material into biogas which comprises: treating the organic material to reduce the number of viable microorganisms in the organic material; treating the organic material with one or more enzymes; separating the liquid fraction from the solid fraction of the enzyme-treated organic material; and digesting the liquid fraction to form biogas.