Abstract: A device for damping a rolling bearing includes a support and a radially flexible cage. The cage includes a ring provided in order to be mounted on the periphery of a rolling bearing. The radial flexibility of this cage results from the structure thereof which is perforated by oblique posts connecting the ring to an attachment annulus of this cage. The support includes a plurality of teeth each extending radially through a respective inter-post opening of the cage. The ring and the support form, radially between one another, a fluid damping cavity suitable for forming a compressed fluid film. The device allows a controlled radial movement of the ring, the latter being radially limited by the support, while having a limited footprint.

Abstract: A device for damping a rolling bearing includes a support and a radially flexible cage. The cage includes a ring provided in order to be mounted on the periphery of a rolling bearing. The radial flexibility of this cage results from the structure thereof which is perforated by oblique posts connecting the ring to an attachment annulus of this cage. The support includes a plurality of teeth each extending radially through a respective inter-post opening of the cage. The ring and the support form, radially between one another, a fluid damping cavity suitable for forming a compressed fluid film. The device allows a controlled radial movement of the ring, the latter being radially limited by the support, while having a limited footprint.

Abstract: The main object of the invention is an angular stator sector (10) for a turbomachine compressor, comprising an outer shroud and an inner shroud (S) arranged coaxially one inside the other, and at least one vane (P) extending radially between the outer shroud and the inner shroud (S) and connected to the latter by its radial ends, characterized in that the inner shroud (S) comprises at least one brush seal (1, 2, 3) forming an obstacle to the recirculation of the downstream gases upstream of the inner shroud (S).

Abstract: An annular bearing cage for a roller bearing of a turbine machine rotating shaft is provided. The bearing cage includes a vibration damping ring corresponding to deformation modes of the bearing cage, and at least one external rim. The external rim includes an at least partially annular housing that extends around a central axis of the bearing cage. The damping ring is located in the housing.

Abstract: The invention relates to an annular bearing cage for a roller bearing of a turbine machine rotating shaft. The bearing cage comprises a vibration damping ring corresponding to deformation modes of the bearing cage. The bearing cage also comprises at least one external rim. The external rim comprises an at least partially annular housing that extends around a central axis of the bearing cage. The damping ring is located in the housing.

Abstract: The main object of the invention is an angular stator sector (10) for a turbomachine compressor, comprising an outer shroud and an inner shroud (S) arranged coaxially one inside the other, and at least one vane (P) extending radially between the outer shroud and the inner shroud (S) and connected to the latter by its radial ends, characterised in that the inner shroud (S) comprises at least one brush seal (1, 2, 3) forming an obstacle to the recirculation of the downstream gases upstream of the inner shroud (S).

Abstract: A seal capable of providing a seal for an air gap between a rotor and a stator. The seal incorporates a container for the textile insulators fixed on the rotor or the stator. The textile insulators are subjected, on one side, to an upstream pressure and, on another side, to downstream pressure, the upstream pressure being greater than the downstream pressure. The textile insulators are supported on the stator or the rotor so as to be at an angle to the side of the seal where the pressure is lower, namely the downstream pressure.

Abstract: A bearing arrangement with rolling elements is arranged between an outer bearing race and an inner bearing race. The inner bearing race includes a first half-race fastened to the rotating shaft and a second half-race. The bearing arrangement includes a maintaining unit which maintains the two half-races together. The maintaining unit is designed to break or deform when the bearing is subjected to a misalignment or a moment above a predetermined value, so as to allow an axial displacement of the second half-race with respect to the first half-race. The invention may be applied to a bearing for a rotating shaft of a turbine engine.

Abstract: The jet engine of the invention comprises an exhaust nozzle of variable section, comprising at least one flap pivot mounted about a pin, the pin being joined to the fixed structure of the jet engine via two braces each comprising a bore for housing the pin, the flap being pivot commanded by an actuating cylinder, connected to two fasteners which each comprise a bore through which the pin passes and about which they rotate. The jet engine is characterized by the fact that the pin, the bores of the braces and bores of the fasteners are arranged so that the contacts between the pin with the bore walls of the braces and with the bore walls of the fasteners are made over convex surfaces. Therefore, when in operation, in the event of pin bending the contact surfaces follow this convex shape and are suitably distributed.

Abstract: The quality of the lubrication of an inter-shaft bearing, particularly one with counter-rotational bushes, is improved by the presence of an obstacle on the outer bush which allows an adjustment in the quantity of oil present on the outer roll track. In particular, the drying of the roll track under the effect of the repeated running of the runners is compensated for by organizing a mandatory axial circulation.

Abstract: An assembly arrangement between an inner race of a bearing and a journal supported in rotation in this bearing includes a journal annular groove and a race annular groove which interact to form an annular channel when they are placed opposite one another. The assembly further includes a retaining ring placed in the annular channel, which prevents a relative movement in translation between the journal and the inner race. The assembly also includes at least one recess of the journal and at least one tooth of the inner race, which interact to prevent a relative movement in rotation between the journal and the inner race.

Abstract: The seal is capable of providing a seal for an air gap between a rotor (18) and a stator. It incorporates a container for the textile insulators (4) fixed on the rotor (18) or the stator. The textile insulators are subjected, on one side, to an upstream pressure and, on another side, to downstream pressure, the upstream pressure being greater than the downstream pressure. The textile insulators (4) are supported on the stator or the rotor (18) so as to be at an angle to the side of the seal where the pressure is lower, namely the downstream pressure.

Abstract: The bearing arrangement (20) is of the type comprising rolling elements (22) arranged between an outer bearing race (26) and an inner bearing race (30). Said inner bearing race (30) comprises a first half-race (36) fastened to the rotating shaft (130) and a second half-race (38). The bearing arrangement (20) comprises maintaining means (40, 70, 80) for maintaining together said two half-races (36, 38), said maintaining means (40, 70, 80) being designed to break or deform when the bearing (20) is subjected to a misalignment or a moment above a predetermined value, so as to allow an axial displacement of the second half-race (38) with respect to the first half-race (36). The invention can be applied to a bearing (20) for a rotating shaft (130) of a turbine engine (100).

Abstract: A bearing assembly includes a first liquid lubricant injector designed to be fed exclusively with non-recycled liquid lubricant to lubricate a bearing. A plurality of drain orifices passes through a bearing ring fixed to a fixed part, and the assembly also includes a second liquid lubricant injector fed with liquid lubricant drained through a collection device for collecting liquid lubricant drained from the orifices, the collection device communicating firstly with a reinjection circuit connected to the second injector, and with a bypass circuit designed to evacuate surplus drained liquid lubricant.

Abstract: A device applied to regulating the flow rate of air flowing in a rotary shaft of a turbomachine, the shaft including at least one through orifice for passing air. The device at least one shutter member for shutting the orifice and secured to a deformable blade presenting bi-linear behavior, the blade being secured to the shaft and being suitable for deforming under the effect of the centrifugal force that results from the shaft rotating such that the shutter member is suitable for taking up two different positions depending on the speed of rotation of the shaft: one position in which it shuts the orifice; and another position in which it releases the orifice to allow air to pass through.

Abstract: A gasket, sliding about the axis of rotation of a part to be brought closer to or to be spaced apart from another part with which it provides tightness through a pair of lips provided on a ring. The gasket includes a portion of the ring capable of bending to modify the clearance between the corresponding lip and the part, the pressure prevailing in an intermediate cavity, the balance of forces on the joint and hence the clearance and the leak flow rate allowed before the gasket, which is advantageous in particular in a case of ventilation gas for refrigerating an element of the machine in controlled operating conditions.

Abstract: A single flexible strip of strands or brush fibers is contained within a body constituted by an inner crown and an outer crown. The crowns are U-shaped such that they can be used to position the two ends of the flexible strip against an outer surface of revolving shaft. Preferably, the arms of the two crowns are of different lengths and face each other.

Abstract: A lubricant drainage circuit outside a roller bearing is fitted such that an output draining through a drained ring is controlled by providing drainage channels crossing the ring and having different inclinations in a circumferential direction of the drained ring.

Abstract: A bearing assembly having dynamic drainage for lubrication oil which incls rings which are provided with races with a conical-shaped cross-section which the balls contact at pairs of side contact points. The central circumference of each ring is free; cooling oil drillings are drilled in it. This arrangement gives better oil circulation characteristics, thus improving the bearing efficiency and less heat is dissipated. Thus higher speed can be expected. The drillings responsible for drainage are inclined in the direction of rotation in order to facilitate drainage outside the roller bearing.

Abstract: Sealing unit made up of a floating body placed between a stator and a rotor, axially mobile along the stator and carrying sealing joints between a high pressure area and a low pressure area separated by the rotor. Another pair of joints and by, by stopping against rotor when the latter is displaced axially, allows a resultant pressure force to be exerted which moves floating body in the same direction as the rotor to reach a position of balance in which the elastic joints operate in satisfactory manner without being subjected to excessive wear and without breaking the seal.