Abstract: A de-oiler system for an aircraft engine including a casing defining a volume containing a rotary shaft and a mixture of air and oil for processing is disclosed. The system includes a hollow rotary axle; a de-oiler structure fastened to the hollow rotary axle and rotating together with the hollow rotary axle, the de-oiler structure having an inlet first face communicating with the volume and an outlet second face connected to a passage formed in the hollow rotary axle; and a transmission device between the hollow rotary axle and the rotary shaft for communicating to the hollow rotary axle a speed of rotation V about its axis in such a manner that the speed of rotation V is greater than a speed of rotation v of the rotary shaft.

Abstract: A method and a system for lubricating a turbine engine including at least three separate housings each including at least one roller bearing. The method pressurizes the housings through seals, of which two main housings are pressurized at a pressure higher than that of a remaining secondary housing, lubricates a secondary roller bearing only by injecting an oil mist from at least one of the main housings, the oil mist being supplied by a pressure difference between the main housings and the secondary housing, recovers a remainder of the lubrication oil injected into the main housings to supply the same to an oil tank, and supplies the air/oil mixture from the secondary housing to an oil separator.

Abstract: A dynamic sealing system between two coaxial rotary shafts respectively comprising an inner shaft and an outer shaft. Connected to the inner shaft, the system comprises a sectorized annular assembly of wipers that are movable under the effect of centrifugal force, and an annular receptacle for liquid arranged in the inside surface of the outer shaft.

Abstract: A centrifugal de-oiler of variable flow section, the de-oiler including a hollow shaft that is movable in rotation. The shaft includes at least one air-passing orifice and a piston housed in the shaft so as to subdivide the inside of the shaft into two compartments that are sealed relative to each other. One compartment includes the air-passing orifice(s) being subjected to ambient pressure, and the other compartment is subjected to varying pressure in the air/oil enclosure. The piston is configured to move in translation inside the shaft between two extreme positions under effect of the pressure difference between the two compartments, the extreme position including a first position in which the air-passing orifice(s) is/are disengaged, and a second position in which the air-passing orifice(s) is/are partially obstructed by the piston.

Abstract: The turbojet has a bearing which supports, in rotation and in thrust, a low-pressure compressor shaft of axis Z-Z of the engine. The bearing is lubricated with oil by means of two nozzles. A feed tube is fastened to the nose cone of the engine. This tube connects the low-pressure compressor shaft to the engine nose cone. A skin lines the wall of the engine nose cone, leaving a passage for the circulation of oil. A plurality of radial oil return tubes are placed between the most eccentric part of the skin relative to the Z-Z axis and the bearing, for returning the oil to the bearing. The return of the oil into the bearing is located at a distance R from the Z-Z axis larger than the radius r of the feed tube.

Abstract: It comprises two bearing supports (19) and (23) mounted on an inter-turbine casing (25), a first and a second bearing (2, 4) mounted on said bearing supports, a low-pressure turbine journal (20) mounted rotating with respect to the inter-turbine casing (25), a fixed ferrule (48) and an oil passage (44) provided in the low-pressure turbine journal (20) making it possible to discharge the oil inside the fixed ferrule (48). The ferrule is preferentially widened from the end at which the oil is discharged.

Abstract: The invention relates to a de-oiler system for an aeroengine including a casing defining a volume containing a rotary shaft and a mixture of air and oil for processing. The system comprises: a hollow rotary tube; a de-oiler structure fastened to said tube and constrained to rotate with said tube, said de-oiler structure having an inlet first face communicating with said volume and an outlet second face connected to the passage formed in said hollow tube; and transmission means between said hollow tube and said shaft for communicating to said hollow tube a speed of rotation V about its axis in such a manner that said speed of rotation V is greater than the speed of rotation v of said rotary shaft.

Abstract: A dynamic sealing system between two coaxial rotary shafts respectively comprising an inner shaft and an outer shaft. Connected to the inner shaft, the system comprises a sectorized annular assembly of wipers that are movable under the effect of centrifugal force, and an annular receptacle for liquid arranged in the inside surface of the outer shaft.