Abstract: A flexible coupling for coupling a first shaft and a second shaft includes a first body and a second body. The first body includes a first end to be fixed to the first shaft, a second end to be fixed to the second shaft and a first tooth, fixed to the radially inner face. The second body is secured to the first body, and has a radially outer face and a second tooth fixed to the radially outer face. The first tooth and the second tooth come into contact when a torque is applied to the first end of the first body so as to transmit the torque to the second end of the first body by the intermediary of the second body.

Abstract: A measuring device for measuring at least one parameter of an aerodynamic flow of a turbine engine. The device operates to collect parameters of the flow. A body extends along a radial axis (L). A connecting part is fastened to a first end of the body and designed to secure the measuring device to a radially outer wall of the turbine engine. A stud is inserted and mounted on a second end of the body radially opposite the first end. The stud includes at least a portion of a rubberlike material designed to come into contract with a radially inner wall of the turbine engine.

Abstract: A flexible coupling for coupling a first shaft and a second shaft includes a first body and a second body. The first body includes a first end to be fixed to the first shaft, a second end to be fixed to the second shaft and a first tooth, fixed to the radially inner face. The second body is secured to the first body, and has a radially outer face and a second tooth fixed to the radially outer face. The first tooth and the second tooth come into contact when a torque is applied to the first end of the first body so as to transmit the torque to the second end of the first body by the intermediary of the second body.

Abstract: An annular air flow passage, particularly for a turbine engine, comprising two radially internal and external annular walls. A measuring element is elongated in a direction between the internal and external annular walls, and a first of the internal or external ends of the element is fixed rigidly to a first of the internal or external walls. The element includes at least one tubular cavity extending along the element and supplied with pressurized fluid.

Abstract: An annular air flow passage includes two radially internal and external annular walls. An element is elongated in a direction between the internal and external annular walls and a first of the internal or external ends of the element is fixed rigidly to a first of the internal or external walls. The center of gravity position of the element is variable.

Abstract: A measuring device for measuring at least one parameter of an aerodynamic flow of a turbine engine. The device operates to collect parameters of the flow. A body extends along a radial axis (L). A connecting part is fastened to a first end of the body and designed to secure the measuring device to a radially outer wall of the turbine engine. A stud is inserted and mounted on a second end of the body radially opposite the first end. The stud includes at least a portion of a rubberlike material designed to come into contract with a radially inner wall of the turbine engine.

Abstract: A turbomachine fitted with a device for gathering the information recorded during operation of the former by a strain gauge positioned on a fan blade borne by a fan disc of the turbomachine, the device including a hollow cylindrical pipe positioned inside one of the rotating shafts of the turbomachine in order to guide at least one wire for transmitting this information, wherein the device further includes a part for attaching the pipe to the rotating shaft.

Abstract: A nut screwed around a rotating shaft with a view to securing a part to said shaft and to cooperate with a fixed sensor sensing a quantity of material in a pre-defined volume to measure the speed of rotation of the shaft, including a ring of teeth separated by slots. At least a portion of the teeth includes at least one recess maintaining the clamping function of the ring of teeth, the at least one recess forming, with notches separating the teeth, respective material deficit intervals detected by said sensor when passing through the detection volume during the rotation of the nut. A method of using the nut with a sensor in a rotational speed measuring device and the production of same.

Abstract: An annular air flow passage, particularly for a turbine engine, comprising two radially internal and external annular walls, wherein an element is elongated in a direction between the internal and external annular walls and a first of the internal or external ends of the element is fixed rigidly to a first of the internal or external walls. According to the invention, the annular flow passage comprises means of variation, along said direction, of the center of gravity position of the element.

Abstract: An annular air flow passage, particularly for a turbine engine, comprising two radially internal and external annular walls. A measuring element is elongated in a direction between the internal and external annular walls, and a first of the internal or external ends of the element is fixed rigidly to a first of the internal or external walls. The element includes at least one tubular cavity extending along the element and supplied with pressurized fluid.

Abstract: A device for classifying strain gauges includes a holder capable of receiving strain gauges and capable of being rotated by a rotating device, the holder being connected to the rotating device by a linking device; and a heater capable of heating the holder and arranged about the mounting, the linking device including a cooling device capable of limiting the heating of the rotating device.

Abstract: The invention concerns a nut (1) intended to be screwed around a rotating shaft (5) with a view to securing a part (2) to said shaft and to cooperate with a fixed sensor (12) sensing a quantity of material in a pre-defined volume in order to measure the speed of rotation of the shaft, comprising a ring of teeth (10) separated by slots (11), said nut being characterised in that at least a portion of the teeth (10) comprises at least one recess (14, 16) maintaining the clamping function of the ring of teeth, said recesses forming, with the notches separating the teeth, respective material deficit intervals intended to be detected by said sensor when passing through the detection volume of same during the rotation of the nut. It also concerns the use of this nut with a sensor in a rotational speed measuring device and the production of same.

Abstract: A fan portion of a dual flow turbojet engine including a plurality of fan blades, a disk supporting the blades and configured to be rotated relative to a stator portion of the fan, along a longitudinal axis of the fan, and a system for setting the angle of attack associated with each fan blade, the systems configured such that the angle of attack of each blade varies according to a same setting law according to the angular position of the blade relative to the stator portion, along the longitudinal axis, the same setting law being periodic with a period of P=360°/n, where n is an integer at least equal to 1.

Abstract: An installation for calibration of a stress gauge for an external bearing block of a turbomachine roller bearing, the bearing block including a radially internal roller bearing race. The installation includes a support table on which the bearing block is attached; an internal roller bearing ring mounted coaxial with the bearing block; a drive shaft driving the ring. The installation also includes a device for applying an axial stress to the bearing block including a support drum on which the internal ring is removably fixed and a connection with the device for applying the axial stress.

Abstract: A rotor element including an annular surface portion about the rotor rotational axis, a fluid passage being formed through the surface portion, a passage-blocking mechanism including a blocking element that is deformable depending on the rotor rotating speed and arranged so as to adjust the fluid flow depending on the rotor rotating speed, and an annular collar with a free edge engaging with the blocking element so as to form the blocking mechanism. The free edge of the annular collar defines, together with the blocking portion of the blocking element, a diaphragm that blocks the fluid passage.

Abstract: An installation for calibration of a stress gauge for an external bearing block of a turbomachine roller bearing, the bearing block including a radially internal roller bearing race. The installation includes a support table on which the bearing block is attached; an internal roller bearing ring mounted coaxial with the bearing block; a drive shaft driving the ring. The installation also includes a device for applying an axial stress to the bearing block including a support drum on which the internal ring is removably fixed and a connection with the device for applying the axial stress.

Abstract: A device for classifying strain gauges includes a holder capable of receiving strain gauges and capable of being rotated by a rotating device, the holder being connected to the rotating device by a linking device; and a heater capable of heating the holder and arranged about the mounting, the linking device including a cooling device capable of limiting the heating of the rotating device.

Abstract: Turbomachine fitted with a device for gathering the information recorded during operation of the former by a strain gauge positioned on a fan blade borne by a fan disc of said turbomachine, said device comprising a hollow cylindrical pipe positioned inside one of the rotating shafts of said turbomachine in order to guide at least one wire for transmitting this information, characterized in that said device further comprises a part for attaching said pipe to said rotating shaft.

Abstract: Measuring the twist of a rotating shaft by means of a laser beam and polarizing filters. The measurement device includes a laser beam generator, two polarizing filters secured to the shaft and spaced apart from each other, and a laser radiation receiver receiving the laser beam after it has passed through both filters.

Abstract: A rotary assembly for a turbomachine fan includes a disk rotatable about an axis; a plurality of blades fastened by their roots to the disk and extending radially outwards from the disk; and a plurality of inter-blade platforms, each extending between two adjacent blades and defining the inner profile for the flow section of the fluid passing through the fan. On their facing side faces, these adjacent blades present slides between which the platform can slide, these slides limiting outward radial movement of the platform.