Abstract: An assembly includes: a fan drive reducing gear of an aircraft turbine engine, and a lubrication system including: a housing enclosing the reducing gear; a device for spraying lubricant onto the reducing gear; a lubricant supply pipe intended to convey the lubricant towards the spraying device; a lubricant recovery pipe communicating with a bottom of the housing; a controlled valve equipping the recovery pipe; and a lubricant overflow discharge pipe connected to an overflow outlet of the bottom of the housing situated above a horizontal level of a bottom point of a gearing of the reducing gear, and to the recovery pipe, downstream from the valve.

Abstract: An assembly includes: a fan drive reducing gear of an aircraft turbine engine, and a lubrication system including: a housing enclosing the reducing gear; a device for spraying lubricant onto the reducing gear; a lubricant supply pipe intended to convey the lubricant towards the spraying device; a lubricant recovery pipe communicating with a bottom of the housing; a controlled valve equipping the recovery pipe; and a lubricant overflow discharge pipe connected to an overflow outlet of the bottom of the housing situated above a horizontal level of a bottom point of a gearing of the reducing gear, and to the recovery pipe, downstream from the valve.

Abstract: An epicyclic gear train for a servomotor system includes a case, and, positioned in the case, a planet carrier carrying planet gears, a ring gear, and a sun gear. The epicyclic gear train includes a control for changing input and output speed ratio in response to an input applied from outside the case.

Abstract: An epicyclic gear train for a servomotor system includes a case, and, positioned in the case, a planet carrier carrying planet gears, a ring gear, and a sun gear. The epicyclic gear train includes a control for changing input and output speed ratio in response to an input applied from outside the case.

Abstract: The present invention relates to a turbine engine (10) comprising: at least one hollow guidance arm (44) radially extending from a hub (38) to an annular housing (42), and having one radially external end which opens out in an opening (60) of said annular housing, a radial countershaft (48) located in said guidance arm (44) for rotatably driving at least one device arranged at the periphery of said annular housing (42). According to the invention, a transfer case (50) is disposed facing the opening (60) of the annular housing, and the turbine engine comprises rotational power transfer means (78, 52) between the radial countershaft (48) and the device, with the guidance arm (44) being equipped, at the external end thereof, with a widened section (56) by which it opens out in the opening (60) of the annular housing and in which part of the transfer case (50) is accommodated.

Abstract: A gearbox for an aircraft turbine engine has a casing defining an enclosure for housing rotating elements lubricated by oil. At least one tubular sleeve is coupled to the rotating elements and configured to rotate a shaft. The sleeve includes splines configured to cooperate with complementary splines of said shaft. The gearbox further includes means for recovering lubricating oil from the rotating elements and conveying the recovered oil by streaming to the splines to lubricate the splines.

Abstract: A gearbox for an aircraft turbine engine has a casing defining an enclosure for housing rotating elements lubricated by oil. At least one tubular sleeve is coupled to the rotating elements and configured to rotate a shaft. The sleeve includes splines configured to cooperate with complementary splines of said shaft. The gearbox further includes means for recovering lubricating oil from the rotating elements and conveying the recovered oil by streaming to the splines to lubricate the splines.

Abstract: The present invention relates to a turbine engine (10) comprising: at least one hollow guidance arm (44) radially extending from a hub (38) to an annular housing (42), and having one radially external end which opens out in an opening (60) of said annular housing, a radial countershaft (48) located in said guidance arm (44) for rotatably driving at least one device arranged at the periphery of said annular housing (42). According to the invention, a transfer case (50) is disposed facing the opening (60) of the annular housing, and the turbine engine comprises rotational power transfer means (78, 52) between the radial countershaft (48) and the device, with the guidance arm (44) being equipped, at the external end thereof, with a widened section (56) by which it opens out in the opening (60) of the annular housing and in which part of the transfer case (50) is accommodated.

Abstract: A servomotor includes a motor unit generating movement of a mechanical component, a position-detecting unit detecting the position of the mechanical component, and a control unit manually controlling the mechanical component. The manual control unit is inside a main enclosure, the manual control unit is actuated by an actuator located outside the main enclosure, and the main enclosure is connected to the motor unit and to the position-detecting unit, The position-detecting unit and the motor unit are located inside first and second enclosures that are distinct from the main enclosure and are removably connected to the main enclosure. The manual control unit can be actuated when the first and second enclosures are separated from the main enclosure.

Abstract: A method for assessing sealing of a housing of a servomotor. The method includes lowering the pressure inside the housing, from an initial pressure to a set pressure, by fluid suction through an opening in the housing, the opening being normally sealed by a plug. When the pressure inside the housing is equal to the set pressure, pressure variation inside the housing, for a predetermined time interval, is determined. The fluid suction prevents any fluid exchange with the housing in a direction opposite a fluid suction direction. The sealing of the housing of the servomotor is assessed based on the pressure variation determined.

Abstract: The invention relates to a mechanical sprung anti-backoff device, capable of fixedly immobilizing or releasing a manual control handwheel (4) and a motor acting on one and the same rotation shaft, comprising a cylindrical spring (7, 16), a cylinder (9, 17) mounted so as to rotate on the rotation shaft, the spring being able to rotate with the cylinder, turns of the spring being in contact with a surface of the cylinder and its ends being capable of coming into contact with the handwheel. The ends of the spring (7, 16) are curved inward or outward, the handwheel (4) may act on the curve of one or other of the ends of the spring (7, 16), and the rotation of the spring (7, 16) is limited by a stop acting against one or other of the ends of the spring. Application can be to manual control and motorized control valves, for example on fluid pipes.

Abstract: A device for connecting a servomotor to at least one electrical cable includes an external housing with at least one cable input, blocked by the cable in operation, and an opening closed by an electrical connection element and forming an interface with the servomotor. The electrical connection element includes a wall of an insulating material and elongate electrical contacts that extend through the wall in a direction substantially orthogonal to the wall, each electrical contact including an inner end inside the device for connection to an electrical cable, and outer end outside the device for being connecting to a corresponding electrical contact of the servomotor. The external housing includes an opening for draining fluid from inside the device in the operational configuration device, and the wall of the electrical connection element extends along a portion of the inner end of the electrical contacts.

Abstract: A method for assessing sealing of a housing of a servomotor. The method includes lowering the pressure inside the housing, from an initial pressure to a set pressure, by fluid suction through an opening in the housing, the opening being normally sealed by a plug. When the pressure inside the housing is equal to the set pressure, pressure variation inside the housing, for a predetermined time interval, is determined. The fluid suction prevents any fluid exchange with the housing in a direction opposite a fluid suction direction. The sealing of the housing of the servomotor is assessed based on the pressure variation determined.

Abstract: A servomotor includes a motor unit generating movement of a mechanical component, a position-detecting unit detecting the position of the mechanical component, and a control unit manually controlling the mechanical component. The manual control unit is inside a main enclosure, the manual control unit is actuated by an actuator located outside the main enclosure, and the main enclosure is connected to the motor unit and to the position-detecting unit, The position-detecting unit and the motor unit are located inside first and second enclosures that are distinct from the main enclosure and are removably connected to the main enclosure. The manual control unit can be actuated when the first and second enclosures are separated from the main enclosure.

Abstract: A device for connecting a servomotor to at least one electrical cable includes an external housing with at least one cable input, blocked by the cable in operation, and an opening closed by an electrical connection element and forming an interface with the servomotor. The electrical connection element includes a wall of an insulating material and elongate electrical contacts that extend through the wall in a direction substantially orthogonal to the wall, each electrical contact including an inner end inside the device for connection to an electrical cable, and outer end outside the device for being connecting to a corresponding electrical contact of the servomotor. The external housing includes an opening for draining fluid from inside the device in the operational configuration device, and the wall of the electrical connection element extends along a portion of the inner end of the electrical contacts.

Abstract: The invention relates to a mechanical sprung anti-backoff device, capable of fixedly immobilizing or releasing a manual control handwheel (4) and a motor acting on one and the same rotation shaft, comprising a cylindrical spring (7, 16), a cylinder (9, 17) mounted so as to rotate on the rotation shaft, said spring being able to rotate with said cylinder, the turns of the spring being in contact with the surface of the cylinder and its ends being capable of coming into contact with said handwheel. The ends of the spring (7, 16) are curved inward or outward, said handwheel (4) may act on the curve of one or other of the ends of the spring (7, 16), and the rotation of the spring (7, 16) is limited by a stop acting against one or other of the ends of the spring. Application to manual control and motorized control valves, on fluid pipes.