Abstract: An extraction device of a platform for holding a blade fitted with an upstream flange, out of a turbomachine rotor disc, and extraction method using the device. The device includes a handle fitted with a radial annular shoulder extended by a threaded pin, a proximal ring and a distal ring having a tube extended by a radial collar and a sleeve. The proximal ring is arranged around the pin, the tapped distal ring being screwed onto the other end of the pin and the sleeve being arranged around the two rings between their respective collars. Screwing of the handle results in moving the distal ring towards the proximal ring, radial deformation of the distal part of the sleeve against the flared part of the cylindrical orifice of the flange and its being joined to the latter. It is possible to conjointly extract the platform and the device from the disc.

Abstract: A shutter is provided for repairing a turbine engine having a damaged or absent fixed rectifier blade (38, 39), this damaged or absent fixed blade (38, 39) leaving free an opening (34) of a ferrule (31) intended to receive an end of this fixed blade (38, 39). The shutter (48) arranged to close the free opening (34) by being rigidly attached to this free opening (34).

Abstract: An intermediate casing for a turbine engine, comprising at least one central hub and one shroud (12) which are positioned concentrically, and mutually mechanically connected by structural arms (11), with such casing comprising at least one sealing part (13) attached between the shroud (12) and a structural arm (11), with the sealing part (13) including at least one metal core and one seal.

Abstract: A plug for preventing corrosion of an attachment opening, includes a bottom surface including an opening for receiving a head of a tightening device; a top surface; and a substantially cylindrical side wall extending between the bottom surface and the top surface. The side wall includes a first side area, wherein the plug is formed of a elastically deformable material and has a diameter at rest and resiliency enabling the plug to block, and be held in, a top portion of the attachment opening via resilient change in shape; and the top surface includes at least one first blind hole, the shape of which is such that, when the plug is subjected to an elastic deformation that causes a ridge to appear between the top surface and the first side area of the plug, the ridge is removed by elastic deformation of the blind hole.

Abstract: In the method for carrying out work, according to the invention, in order to maintain a metal turbine engine motor, such as a drum, in an operational state: an upstream and/or downstream face (343) of a circumferential groove (34) of the rotor is ground, with said face having recessed marks that the grinding is intended to remove or at least blur, and foils (43) are placed in the groove between the blades of the rotor (24) and the rotor, at least in the area where the face has been ground.

Abstract: A shutter is provided for repairing a turbine engine having a damaged or absent fixed rectifier blade (38, 39), this damaged or absent fixed blade (38, 39) leaving free an opening (34) of a ferrule (31) intended to receive an end of this fixed blade (38, 39). The shutter (48) arranged to close the free opening (34) by being rigidly attached to this free opening (34).

Abstract: An intermediate casing for a turbine engine, comprising at least one central hub and one shroud (12) which are positioned concentrically, and mutually mechanically connected by structural arms (11), with such casing comprising at least one sealing part (13) attached between the shroud (12) and a structural arm (11), with the sealing part (13) including at least one metal core and one seal.

Abstract: An extraction device of a platform for holding a blade fitted with an upstream flange, out of a turbomachine rotor disc which includes a handle fitted with a radial annular shoulder extended by a threaded pin, a proximal ring and a distal ring which include a tube extended by a radial collar, and a sleeve, the proximal ring being arranged around the pin, the tapped distal ring being screwed onto the other end of the pin and the sleeve being arranged around the two rings between their respective collars, such that screwing of the handle results in moving the distal ring towards the proximal ring, radial deformation of the distal part of the sleeve against the flared part of the cylindrical orifice of the flange and its being joined to the latter, and that it is possible to conjointly extract said platform and the device from the disc.

Abstract: An attachment system intended to equip a wall, the system including a nut intended to receive a screw of which the orientation is normal to the wall, the screw passing through an element such as an outer panel in order to attach the element to the wall. The attachment system comprises a socket having a threaded cylindrical outer face intended to be screwed into a hole passing through the wall and having dimensions greater than the dimensions of the fastener that the repair socket replaces, the socket carrying, in the central region of same, a nut receiving the screw.

Abstract: A method for repairing a fan casing in which the inner surface is damaged, includes attaching a reinforcement element to the fan casing, the reinforcement element being attached to the outer surface of the fan casing opposite the damage.

Abstract: A plug for preventing corrosion of an attachment opening, includes a bottom surface including an opening for receiving a head of a tightening device; a top surface; and a substantially cylindrical side wall extending between the bottom surface and the top surface. The side wall includes a first side area, wherein the plug is formed of a elastically deformable material and has a diameter at rest and resiliency enabling the plug to block, and be held in, a top portion of the attachment opening via resilient change in shape; and the top surface includes at least one first blind hole, the shape of which is such that, when the plug is subjected to an elastic deformation that causes a ridge to appear between the top surface and the first side area of the plug, the ridge is removed by elastic deformation of the blind hole.

Abstract: A method for repairing a fan casing in which the inner surface is damaged, includes attaching a reinforcement element to the fan casing, the reinforcement element being attached to the outer surface of the fan casing opposite the damage.

Abstract: An attachment system intended to equip a wall (17), the system including a nut intended to receive a screw (31) of which the orientation is normal to the wall (17), the screw (31) passing through an element such as an outer panel (32) in order to attach the element to the wall (17). The attachment system comprises a socket (26) having a threaded cylindrical outer face (34) intended to be screwed into a hole (29) passing through the wall (17) and having dimensions greater than the dimensions of the fastener that the repair socket (26) replaces, the socket (26) carrying, in the central region of same, a nut (28) receiving the attachment screw (32).

Abstract: In the method for carrying out work, according to the invention, in order to maintain a metal turbine engine motor, such as a drum, in an operational state: an upstream and/or downstream face (343) of a circumferential groove (34) of the rotor is ground, with said face having recessed marks that the grinding is intended to remove or at least blur, and foils (43) are placed in the groove between the blades of the rotor (24) and the rotor, at least in the area where the face has been ground.

Abstract: An axisymmetrical portion for an aircraft turbojet engine intermediate case intended to protrude downstream from an outer axisymmetrical portion of the intermediate case is provided. The axisymmetrical portion includes an annular groove radially open outwards, and at least one insert laid out inside the groove, which covers each internal face of the groove and which is radially open outwards.

Abstract: A method for repairing a flange of a rotor, to a transverse surface of which a disk of a fan in an upstream turbo-fan engine is attached. The flange includes, in a form of a ring, openings for connecting to the disk and intermediate discharge openings. Wear marks are formed by friction of the fan blades on the flange. The method includes machining spot facings onto the flange, in areas with wear marks; placing anti-wear slugs in the discharge openings that can be covered by the blades during friction; and the spot facings extend between the connection openings and are circumferentially limited by clamping surfaces of the connection between the disk and the flange.

Abstract: An aircraft turbojet fan including multiple fan blades including a support that includes a rear portion including a first surface located on an intrados side and a second surface located on an extrados side. A fan disk includes, between recesses, attaching flanges radially protruding towards the outside such that the first surface and the second surface are located respectively opposite two attaching flanges. The fan further includes a wear-resistant part installed on the blade to form a protective shell on each of the first and second surfaces of the support, preventing contact between each surface and the attaching flange located opposite it.

Abstract: A turbine engine air blower including a rotor disk that includes, on an outer periphery thereof, longitudinal ribs, each including a radial lug for attaching the disk onto a downstream compressor rotor. The flanks of the lugs form abutments for holding vanes that are mounted onto the disk. A mechanism protecting flanks of the lugs is circumferentially inserted between the lugs and the vanes.

Abstract: The fan comprises a fan disk able to be rotationally driven about a longitudinal axis and provided at the periphery with radial blades each comprising a root slideably engaged in a groove of the disk and, on the outside thereof, a vane, platforms surrounding the disk being interposed between the radial blades. Advantageously, the fan additionally comprises shock-absorbing wedges which are arranged tangentially at the exterior periphery of said disk underneath the platforms and between two roots of adjacent radial blades, each wedge being in tangential contact with the two adjacent blades.

Abstract: A turbomachine rotor including a disc including a rim and axial slots machined in the rim for the individual housing of blades, a ring being attached to one face of the rim, the ring being pierced with holes in the axial continuation of the slots, at least some of the holes in the continuation of the slots including a plug. The plug includes a first half-plug made of a first wear-resistant material and a second half-plug made of a second material, one of the two half-plugs bearing on one side of the ring and the other bearing on the other side of the ring and being connected to one another through the hole. The plug is configured to form an anti-wear device.