Abstract: A fiber preform for a turbine ring sector obtained by three-dimensional weaving and including a base-forming first portion, two tab-forming L-shaped portions each presenting two branches, two ends of the first portion being extended by respective ones of the first branches, and a second portion connecting together the two tabs, first and second strips woven together forming the first branches, a first fraction of the thicknesses of the second branches, and the first portion, there being a non-linked zone between them that is situated in the first branches and in the first portion, and a third woven strip forming the second portion and a second fraction of the thickness of the second branches of each of the tabs.

Abstract: A turbine nozzle element including an inner annular platform sector, an outer annular platform sector, and at least one vane extending between the platform sectors and connected to both of them. The nozzle element includes a single piece of composite material including fiber reinforcement densified by a matrix that is at least partially ceramic, and the fiber reinforcement includes a fiber structure that is woven by three-dimensional or multi-layer weaving, and that presents continuity throughout the volume of the nozzle element and throughout the periphery of the vane.

Abstract: A fiber preform for a turbine ring sector obtained by three-dimensional weaving and including a base-forming first portion, two tab-forming L-shaped portions each presenting two branches, two ends of the first portion being extended by respective ones of the first branches, and a second portion connecting together the two tabs, first and second strips woven together forming the first branches, a first fraction of the thicknesses of the second branches, and the first portion, there being a non-linked zone between them that is situated in the first branches and in the first portion, and a third woven strip forming the second portion and a second fraction of the thickness of the second branches of each of the tabs.

Abstract: A turbomachine rotor wheel having composite material blades is disclosed. The wheel includes a slideway disk having a circumferential groove at its outer periphery, the groove having an opening that is narrower than its bottom, with a plurality of composite material blades each having a blade root engaged in the groove of the slideway disk and presenting a longitudinal section adapted to the longitudinal section of the slideway disk in order to be held radially therein by co-operating shapes, and an orientation disk fastened coaxially around the slideway disk and including, in its outer periphery, a plurality of axial slots each of which is open at one end. Each slot presents a cross-section that is adapted to the cross-section of a corresponding blade root so as to hold it angularly by co-operating shapes.

Abstract: A turbine nozzle element including an inner annular platform sector, an outer annular platform sector, and at least one vane extending between the platform sectors and connected to both of them. The nozzle element includes a single piece of composite material including fiber reinforcement densified by a matrix that is at least partially ceramic, and the fiber reinforcement includes a fiber structure that is woven by three-dimensional or multi-layer weaving, and that presents continuity throughout the volume of the nozzle element and throughout the periphery of the vane.

Abstract: A bladed stator sector for a turbo-engine reduces the occurrence of thermally-induced stress cracks in stator blades by increasing the flexibility of the sectors by using one or more cutouts. The stator sector includes at least one stator blade between inner and outer platforms and at least one flange on one or more of the platforms. Each flange has a first end portion fixed to one of the platforms and a second end portion that is not fixed to either of the platforms. The one or more cutouts may be located on the flange and may be non-opening.

Abstract: The invention relates to a turbomachine blade made of composite material including fiber reinforcement, the blade being obtained by three-dimensionally weaving yarns and densifying with a matrix. The blade comprises a single piece constituting both the airfoil and the root of the blade. The blade root has two substantially plane opposite side flanks that are formed in register with the pressure side and suction side surfaces respectively of the airfoil and it is clamped between two metal plates that are fastened against the side flanks of the root.

Abstract: The invention relates to a turbomachine rotor wheel (1) having composite material blades, the wheel comprising a slideway disk (10) having a circumferential groove (12) at its outer periphery, the groove having an opening that is narrower than its bottom, with a plurality of composite material blades (100) each having a blade root (102) engaged in the groove of the slideway disk and presenting a longitudinal section adapted to the longitudinal section of the slideway disk in order to be held radially therein by co-operating shapes, and an orientation disk (200) fastened coaxially around the slideway disk and including, in its outer periphery, a plurality of axial slots (208) each of which is open at one end, each slot presenting a cross-section that is adapted to the cross-section of a corresponding blade root so as to hold it angularly by co-operating shapes.

Abstract: An aircraft cabin including at least two seats, which seat each include at least two elements which can be moved relative to each other and at least one actuator for the relative displacement of these movable elements, and at least one central power control unit in the cabin in order to allocate a total available power level to each seat, where each seat includes parts for reading at least one item of morphological information of the passenger sitting in the seat, and a part for transmitting information to the central power control unit in accordance with each item of morphological information, and the central power control unit is capable of allocating to each seat a total available power level in accordance with each item of morphological information.

Abstract: The installation (10) for controlling power in an aircraft comprises a power distribution network (22); at least two subscribers (14A, 14B, 14C) connected to the network (22); a central power control unit (20) which is capable of allocating a total available power level to each subscriber; and a device for determining the total power effectively consumed for each load of the subscribers. The central power control unit (20) acquires information which represents the total power effectively consumed by each subscriber and is capable of allocating the total available power to each subscriber in accordance with the total power levels effectively consumed by the subscribers.

Abstract: The vehicle seat (10) comprises a seat structure (12), at least one element (14, 16) which is mobile relative to the structure (12) of the seat, at least one actuator (20, 22) for operating the or each mobile element (14, 16), means (24) for controlling the or each actuator (20, 22) in order to bring the seat into a set of predetermined configurations. Sequencing means (24) suitable for operating the control of the or each actuator (20, 22) in order to bring the seat into several different predetermined configurations in succession in accordance with a predetermined sequence of configurations with a predetermined hold time between each change of configuration.

Abstract: The invention relates to a method of managing the operation of a seat (10) fitted with an actuator (24) including means (42, 44) for monitoring at least one variable characteristic of the force produced by the actuator (24), means (41) for measuring the position of the actuator, and means (36) for controlling the actuator, the method comprising the steps consisting in: measuring the or each characteristic variable; evaluating the or each characteristic variable on the basis of a predetermined evaluation criterion; and while the actuator is in operation, implementing an appropriate action on the seat as a function of the result of said evaluation. Said evaluation comprises a step of measuring the position of the actuator. Said evaluation criterion for the or each measured characteristic variable as used for said evaluation depends on the position of the actuator.

Abstract: The installation (10) for controlling power in an aircraft comprises: a power distribution network (22); at least two subscribers (14A, 14B, 14C) connected to the network (22); a central power control unit (20) which is capable of allocating a total available power level to each subscriber; and means for determining the total power effectively consumed for each load of the subscribers. The central power control unit (20) comprises means (18B) for acquiring information which represents the total power effectively consumed by each subscriber and is capable of allocating the total available power to each subscriber in accordance with the total power levels effectively consumed by the subscribers.

Abstract: The aircraft cabin comprises: at least two seats (14A, 14B, 14C) which each comprise at least two elements which can be moved relative to each other and at least one actuator (24, 26) for the relative displacement of these movable elements, at least one central power control unit (20) in the cabin in order to allocate a total available power level to each seat. Each seat (14A, 14B, 14C) comprises means (30, 32, 34) for reading at least one item of morphological information of the passenger sitting in the seat, and means (18B) for transmitting information to the central power control unit (20) in accordance with the or each item of morphological information. The central power control unit (20) is capable of allocating to each seat (14A, 14B, 14C) a total available power level in accordance with the or each item of morphological information.

Abstract: The present invention relates to a method for supplying bioavailable methionine to a cow which comprises supplying to the cow an ester of methionine or methionine amide and/or an ester of the hydroxy analogue of methionine or a salt thereof.

Abstract: An animal rumen-resistant feed supplement in the solid form, said feed supplement comprising at least one methionine derivative and a porous carrier material wherein (a) said methionine derivative is selected from the group consisting of liquid and solid esters of the 2-hydroxy-4-(methylthio)butanoic acid, with the proviso that solid esters have a melting point of 100° C. at most; the 2-amino-4-methylthiobutanamide and the 2-hydroxy-4-methylthiobutanamide, (b) said methionine derivative accounts for at least 20% and up to 70% by weight of the feed supplement and (c) said supplement is in the form of particles having a size range of from 80 to 600 microns.

Abstract: The invention relates to a method of managing the operation of a seat (10) fitted with an actuator (24) including means (42, 44) for monitoring at least one variable characteristic of the force produced by the actuator (24), means (41) for measuring the position of the actuator, and means (36) for controlling the actuator, the method comprising the steps consisting in: measuring the or each characteristic variable; evaluating the or each characteristic variable on the basis of a predetermined evaluation criterion; and while the actuator is in operation, implementing an appropriate action on the seat as a function of the result of said evaluation. Said evaluation comprises a step of measuring the position of the actuator. Said evaluation criterion for the or each measured characteristic variable as used for said evaluation depends on the position of the actuator.

Abstract: The present invention relates to a method for supplying bioavailable methionine to a cow which comprises supplying to the cow an ester of methionine or methionine amide and/or an ester of the hydroxy analogue of methionine or a salt thereof.

Abstract: The present invention relates to a method for supplying bioavailable methionine to a cow which comprises supplying to the cow an ester of methionine or methionine amide and/or an ester of the hydroxy analogue of methionine or a salt thereof.

Abstract: The present invention relates to a method for supplying bioavailable methionine to a cow which comprises supplying to the cow an ester of methionine or methionine amide and/or an ester of the hydroxy analogue of methionine or a salt thereof.