Abstract: Controllable pitch blade non-ducted propeller for a jet engine, comprising a rotor member comprising radial housing for mounting blade support plates, each plate being attached in a ring centered and guided in rotation in a housing of the rotor member and comprising external toothing engaged and locked in internal toothing of the ring, to withstand the centrifugal forces to which the propeller blades are subjected in operation.

Abstract: The assembly comprises a fixed fork (10) of which the lugs (22, 30) support a rod (60) onto which a spherical ball is slipped (46) about which a cage (44) and a support (42), of the part which is mobile in rotation, swivel. The maintaining of the axial and angular positions of the spherical ball (46) in the fork is ensured, in particular, by a tight fit (A3) which replaces conventional screw and nut systems positioned at the end of the rod and which project disadvantageously. According to the invention, a pair of planar facets which are opposing and in abutment (including 23) carry out a blocking of one of the assembly pieces in rotation. Application to bell cranks for the transmission of movement, in particular in aircraft engines.

Abstract: The invention relates to a device for injecting a mixture of air and fuel into a combustion chamber of a turbomachine where the supply of air is improved. The invention relates more particularly to a new type of sliding bushing.

Abstract: Member for the guidance of a movable piece, including at least one surface in friction and sliding contact with a complementary surface of the movable piece, including several separate ceramic elements carried by a support having resilience characteristics, and for example, made of an elastomer.

Abstract: The present invention relates to encapsulated lactic acid, where lactic acid is in a solid, pure, crystalline form. The encapsulation of food acids is common practice. Many companies produce encapsulated citric, tartaric and sorbic acids or GDL. However, lactic acid, a major food acid for its flavour and conservation effect, is not available in a pure solid crystalline encapsulated form. As no substrate is needed for said coated solid lactic acid particles, the lactic acid content of said particles may be very high and the activity of the lactic acid is not impaired by the substrate. Furthermore, the encapsulated solid lactic acid particles according to the invention are easy to handle and are less expensive than encapsulated liquid lactic acid.

Abstract: A bushing for a variable-pitch vane pivot in a turbomachine, the bushing being for mounting in a recess in a ring of the turbomachine, the recess being of a shape that is substantially complementary to the shape of the bushing, the bushing comprising a body that is substantially tubular having a longitudinal axis, and at least three branches extending radially outwards relative to the longitudinal axis of the tubular body, and axially over the full height of said tubular body, said branches being distributed in substantially equidistant manner around the circumference of the tubular body.

Abstract: The device for rotationally locking a clamping nut for a component on an end of a hollow shaft, said clamping nut being screwed inside said shaft and having a free end, comprising: at least one shaft cutout on the radially inner periphery of said end of the shaft, at least one nut cutout on the radially outer periphery of an end of said clamping nut, and a locking plug intended to be placed in a locking hole formed by bringing a shaft cutout into coincidence with a nut cutout.

Abstract: A method for producing a concave textile undergarment article from at least two planar textile pieces to be joined along facing edges of the at least two textile pieces and the article so produced are provided. The method provides that at least one of the at least two planar textile pieces has a curved facing edge. The method provides for superposing the at least two planar textile pieces along a line corresponding to a common seam and provisionally heat-welding the at least two planar textile pieces along the line corresponding to the common seam to form a weld seam. The method further provides for positioning a reinforcing strip astride the two pieces along the weld seam and fastening said strip onto the pieces to form the concave textile article.

Abstract: Control device of variable pitch vanes in a turbomachine, including a ring (14) surrounding a casing (10) of the turbomachine and connected by links to the variable pitch vanes, and a jack (16) connected to the ring in order to displace it in rotation around the casing, the jack being mounted pivoting on the casing and its piston rod (18) being connected to the ring by a connecting rod (24), the piston and connecting rods being articulated on an axis (20) which is connected to the casing by guiding means (33) maintaining it at a substantially constant distance from the casing.

Abstract: A pivot bushing for a variable-pitch vane of a turbomachine, the bushing being for mounting in a recess in a ring of the turbomachine, the recess being of a shape that is substantially complementary to the shape of the bushing. The bushing comprises a substantially tubular body of longitudinal axis provided at one end with a first conical collar and at an opposite end with a second conical collar, the conical surfaces defined by the first and second collars being disposed facing each other.

Abstract: Assembling a plurality of parts together in a manner that enables a device of complex shape to be reconstituted. At least one of the parts includes two ribs in a chevron configuration and at least one other part includes two grooves in a chevron configuration, the ribs and the grooves being complementary in shape and of corresponding dimensions.

Abstract: A turbomachine including a variable-pitch stator vane stage. A control ring that is coaxial around the casing comprises two segments that are assembled together by side connection straps fastened on either side of the segments with mutual insetting and in the vicinity of the ends of the segments.

Abstract: A turbomachine comprising: an annular combustion chamber (40) with injection orifices (44); a centrifugal compressor (10) having a centrifugal downstream stage; and an annular diffuser (20) comprising: a radially-oriented upstream portion (21) with diffusion passages (22) connected to the outlet of the compressor; an elbow-shaped intermediate portion (24); and a downstream portion (25) comprising a series of flow-straightening vanes (26) and inclined relative to the axis (A) of the turbomachine. In the section plane containing the axis (A) of the turbomachine and passing via the center (C) of one of said injection orifices (44), the curvilinear abscissa distance along a flow line (L) between the middle (O) of the flow path at the trailing edges of the flow-straightening vanes (26) and said center (C) is greater than or equal to three times the height (h) of said flow path.

Abstract: Network-units (4) comprising multicast driver devices (3) handle multicast messages efficiently by providing the multicast driver devices (3) with memory nodes (1,2) arranged in rows and/or columns, with a memory node (1,2) comprising a memory element (31-33) for memorizing a state of the memory node (1,2). Large numbers of multicast cells/groups like multicast cells and/or multicast groups can be served advantageously. M×N memory nodes (1,2) are arranged in M rows and N columns, with a memory node (1,2) comprising an engagement line (11), an unavailability line (12) and an identification line (13) per row and a request line (21), an acknowledgement line (22) and a selection line (23) per column. A memory element (31,32) memorizes a state indicating a destination port being used for a multicast cell/group, and a further memory element (33) indicates a state requesting a generation of a multicast copy for a destination port, all according to a rule of exclusiveness.

Abstract: The assembly comprises a fixed fork (10) of which the lugs (22, 30) support a rod (60) onto which a spherical ball is slipped (46) about which a cage (44) and a support (42), of the part which is mobile in rotation, swivel. The maintaining of the axial and angular positions of the spherical ball (46) in the fork is ensured, in particular, by a tight fit (A3) which replaces conventional screw and nut systems positioned at the end of the rod and which project disadvantageously. According to the invention, a pair of planar facets which are opposing and in abutment (including 23) carry out a blocking of one of the assembly pieces in rotation. Application to bell cranks for the transmission of movement, in particular in aircraft engines.

Abstract: The present invention relates to a gas turbine engine diffuser (30) defined between an external casing (32) and an internal casing (34) of said engine and supplied with air via an upstream annular diffuser duct (36), comprising a combustion chamber (10) of the convergent type, forming an external annular duct (28) with the external casing (32) and an internal annular duct with the internal casing (34), which diffuser comprises a cowling partially closing off the external annular duct. More specifically, the cowling is positioned toward the closed end of the combustion chamber.

Abstract: A fuel injector system for injecting fuel into a turbomachine combustion chamber, the system comprising first and second fuel injectors wherein the first injector (22) is positioned in the center of the injector system (20) so as to inject a first fuel spray (42), and wherein the second injector (28) surrounds the first injector in such a manner as to inject a second fuel spray (48) of generally annular shape around the first fuel spray. The injector system further comprises an air admission duct (22) with outlet orifices (62) opening out between the first and second injectors so as to create a separator air film (f1) between the respective combustion zones of the first and second fuel sprays.

Abstract: The invention relates to the field of turbomachines and concerns a device (20a, 20b) for injecting a mixture of air and fuel into a combustion chamber (4) of a turbomachine (1). It relates more specifically to an injection device (20b) provided with a novel sliding bushing (30b) and with a novel annular cup (50b) for retaining the sliding bushing, making it possible to improve the air feed of the injection device.

Abstract: A variable-pitch stator vane stage in which the vanes are moved by a rotary actuator ring driven by an electric motor. The outer actuator ring is connected by cranks to the vanes and is constrained to move in rotation only, centered on the axis of the turbomachine; the drive system includes two coaxial portions, an inner portion secured to the casing and an outer portion including the actuator ring, with an electrical drive unit being arranged between the two portions.

Abstract: The present invention relates to a valve device for regulating a fluid, particularly a gaseous fluid, in a conduit portion, comprising a valve body fixed to a support spindle extending transversely into said portion and mounted with the ability to rotate therein, said conduit portion comprising, on either side of said spindle, opposing internal steps forming two bearing surface portions for corresponding edge parts of said valve body, in the closure position thereof, each step extending substantially over approximately half of the internal circumference of the conduit portion in the region of the mounting position of the support spindle.