Safran Aircraft Engines

Safran Transmission Systems

Safran Landing Systems

Caroline Marie Frantz

Gilles Alain Marie Charier

Vincent François Georges Millier

Adrien Louis Simon

Loïc Paul Yves Guillotel

Matthieu Bruno François Foglia

Jean Charles Olivier Roda

Bastien Pierre Verdier

Maeva Daphné Gros-Borot

Nicolas Xavier Trappier

Jérémy Vielcanet

Olivier Belmonte

Nathalie Nowakowski

Paul Ghislain Albert Levisse

Christophe Marcel Lucien Perdrigeon

Huguette De Wergifosse

Tewfik Boudebiza

Serge René Morreale

Jonathan Evert Vlastuin

Nicolas Joseph Sirvin

Didier Gabriel Bertrand Desombre

Nicolas Jerome Jean Tantot

Clément Dupays

Nicolas Jérôme Jean Tantot

Sébastien Oriol

Daniel-Ciprian Mincu

Laurent Louis Robert Baudoin

Frédéric Dautreppe

Romain Jean-Claude Ferrier

Olivier Formica

Mathieu Jean Jacques Santin

Jean-Baptiste Kamis

Nora El Ghannam

Jean-Claude Christian Taillant

Henri Yesilcimen

Yves Roland Crochemore

Matthieu Etienne Attali

Jagoda Alina Worotynska

Christelle Pettenazzi

Thomas Gerard Daniel Riviere

David Simon

Pierrot Guillou

Benoit Gaillot-Drevon

Antoine Laigle

Kévin Morgane Lemarchand

Antoine Pierre Albert Mariot

Nicolas Jerôme Jean Tantot

Giles Alain Marie Charier

Benoît Gaillot-Drevon

A turbomachine module includes An annular shroud is releasably attached to the annular part and comprising has means for attaching the connection mechanism.

Turbomachine module equipped with variable pitch vanes and an annular interface shroud

A fan module for an aircraft turbine engine, the module including a fan having variable-pitch blades and an oil transfer device for transferring oil between a stator and a rotor, the device including a stator ring having a cylindrical inner surface and internal oil ducts and a shaft engaged in the ring and having a cylindrical outer surface and internal oil ducts; the device includes a plain bearing located between said cylindrical inner surface and the cylindrical outer surface and defined by a single band; and rolling bearings mounted between the ring and the shaft, on either side of the plain bearing, each of these rolling bearings having one of the rings thereof integrated in one of the elements selected from the ring and the shaft.

Fan module equipped with an oil transfer device

A hydraulic assembly for an aircraft engine includes a pump with a housing and a rotor arranged inside the housing. The housing has at least one hydraulic line configured for the passage of a fluid; and a hydraulic transfer unit comprising: a hydraulic transfer block attached to the housing and comprising an internal fluid passage channel which communicates with the hydraulic line, and a casing which covers the transfer block and which is guided in rotation about an axis of revolution (Y) and about the transfer block, the casing having a fluid outlet port that communicates with the internal channel.

Hydraulic assembly for an aircraft engine

A module including a device for changing the pitch of the vanes about the pitch axes thereof, the device including: a hydraulic actuator capable of rotating about the longitudinal axis (X) and configured to rotate the vanes about their pitch axes (C), a supply pump for supplying fluid to the hydraulic actuator, the supply pump including a drive shaft capable of rotating about the longitudinal axis (X) and a shell that is rotationally fixed relative to the longitudinal axis (X), and an electric machine configured to operate the supply pump, the electric machine having a rotary member for driving the drive shaft and a fixed member that is rotationally fixed relative to the longitudinal axis (X).

Module for an aircraft turbine engine

The present invention relates to a mechanism for changing the pitch of a propeller of a turbine engine, the mechanism comprising an electrohydraulic actuator that comprises: —an electric machine comprising a rotatable actuator shaft; —a pumping assembly comprising two hydraulic axial piston pumps, each comprising: o a barrel housed in a cavity filled with hydraulic fluid; o a set of cylinders formed in the barrel, each cylinder housing a translatable piston and comprising an inlet port and a delivery port; o and an inclined plate, the plate of a first pump comprising a crescent-shaped inlet port for circulating the hydraulic fluid when the plate is rotated in a first direction, and the plate of a second pump comprising a crescent-shaped inlet port for circulating the hydraulic fluid when the plate is rotated in a second direction.

Electrohydraulic pitch setting with reversible pump

Module for mounting a turbomachine fan blade, including: a blade force take-up device, a blade support able to pivot about a radial axis and configured to be engaged axially inside the device, the support and the device being mutually configured to ensure a clamping of the support against the device and an axial retention of the support inside the device; the support and the device each including, on their respective surfaces in cooperation, an alternation of conical seats and recesses making it possible alternatively, on the one hand, when the recesses of one surface are in geometric correspondence with the seats of the other surface, to axially slide the support relative to the device, and on the other hand, when the seats of both surfaces are in geometric correspondence with each other, to prevent any axial sliding movement of the support relative to the device.

Module for mounting a turbomachine fan blade

A module including a device for changing the pitch of the vanes about the pitch axes thereof, the device including a hydraulic actuator capable of rotating about the longitudinal axis and configured to rotate the vanes about their pitch axes, a pump for supplying fluid to the hydraulic actuator, including a transmission shaft and a placed around the transmission shaft and rotating as one with the drive shaft, and an electric machine including a rotor rotating as one with the transmission shaft and a stator rotationally fixed relative to the longitudinal axis. The stator can be connected to a power supply cable passing through a passage provided in the third element of the speed reducing gear.

A propulsion system includes a drive shaft movable in rotation about an axis of rotation, a low-pressure compressor driven in rotation by the drive shaft, the low-pressure compressor having a mean radius, a fan shaft, a fan driven in rotation by the fan shaft, a reduction mechanism coupling the drive shaft and the fan shaft, having a reduction ratio, and an inlet channel which extends between the fan and the low-pressure compressor, the inlet channel having an inlet adjacent to the fan and an outlet opposite the inlet and adjacent to the low-pressure compressor, the inlet having a mean radius. A first ratio between a ratio of a mean radius of the inlet channel and the mean radius of the low-pressure compressor, and the reduction ratio of the reduction mechanism, is strictly less than 0.35.

Aeronautic propulsion system with improved propulsion efficiency

A device for setting the pitch of blades for a turbine engine, including a control system acting on a linkage mechanism and including an actuator having two chambers; —a supply member coupled to a fluid transfer bearing for transferring a pressurised fluid from a main supply source in a fixed frame of reference to the chambers; —an auxiliary supply circuit which is arranged in a rotating frame of reference and is connected to the supply member and to the main supply source, the supply member being configured to: —in normal operation, allow fluid to pass from the main supply source to the chambers and to the auxiliary supply circuit, and—in the event of a break in the supply to the chambers from the main supply source, allow pressurised fluid to pass from the auxiliary supply circuit to the chambers.

Device for setting the pitch of blades for a turbine engine, and turbine engine comprising same

A fan module for an aircraft turbine engine includes a fan with a fan shaft and variable-pitch fan blades. The fan module further includes an oil transfer device transfers oil between a stator and an actuator that controls the pitch of the fan blades the device includes a stator ring having an inner cylindrical surface and internal oil ducts, each of which opens onto the inner cylindrical surface. A shaft is engaged in the stator ring and rotates about an axis inside the ring. The shaft includes an outer cylindrical surface extending inside said inner cylindrical surface. The shaft has internal oil ducts, each of which opens onto said outer cylindrical surface A rolling bearing is mounted between the ring and the shaft, on each side of the plain bearing.

An aero-propulsion system includes a drive shaft, a low-pressure compressor, a fan shaft driving a fan, a reduction device that couples the drive shaft and the fan shaft, and an inlet channel which extends between the fan and the low-pressure compressor, the inlet having a predetermined mean radius, a ratio between a mean radius of the inlet channel and the mean radius of the low-pressure compressor, on the one hand, and the reduction ratio of the reduction mechanism, on the other hand, being less than 0.35.

An aircraft turbine engine includes a gas generator and a fan arranged upstream from the gas generator and configured to generate a main gas flow, one portion of which flows in a flow path of the gas generator to form a primary flow, and another portion of which flows in a flow path around the gas generator to form a secondary flow. The gas generator has a low-pressure body with a rotor driving the fan and a low-pressure compressor situated upstream from an intermediate housing. The turbine engine also includes an electric machine, mounted coaxially downstream from the fan and upstream from the intermediate housing. An intermediate shaft is driven by the rotor of the low-pressure body and drives rotors of the electric machine and of the low-pressure compressor.

Aircraft turbine engine equipped with an electrical machine

A propulsion system includes a drive shaft that rotates about an axis, a fan, a fan shaft that drives the fan about the axis, a reduction mechanism coupling the drive and fan shafts, a compression section driven by the drive shaft, and an inlet channel that extends between the fan and the compression section. The inlet channel includes inner and outer ferrules delimiting an air inlet flow path, the inner ferrule having a minimum radius. The reduction mechanism includes two reduction stages including two or more planet gears circumferentially distributed around the axis, each planet gear including a first portion meshed with the drive shaft and a second portion meshed with the fan shaft and being mounted fixed with respect to the inner ferrule and having a maximum radius greater than the minimum radius such that the air inlet flow path extends partly between the two or more planet gears.

Aeronautical propulsion system with improved propulsive efficiency

A turbofan includes a fan, a casing positioned downstream of the fan and separating a primary flowpath from a secondary flowpath, a compressor, a combustion chamber and a turbine being arranged in the primary flowpath, the turbofan having a differential transmission coupled to the turbine, and a power supply device configured to provide additional power to the one provided by the turbine to drive the compressor.

Turbofan comprising a power supply device to drive the compressor

A propulsion system includes a drive shaft, a fan, a fan shaft, and a reduction device coupling the drive and fan shafts. The reduction device includes a first reduction stage and a second reduction state, and include a sun gear, centered on an axis of rotation of the drive and fan shafts and driven in rotation by the drive shaft, a ring gear, coaxial with the sun gear and that drives the fan shaft in rotation about the axis, and planet gears distributed circumferentially about the axis between the sun and ring gears, each planet gear including a first portion which is meshed with the sun gear and a second portion which is meshed with the ring gear, a diameter of the first portion being different from a diameter of the second portion, and an oil transfer bearing positioned between the fan and the reduction device.

Aeronautic propulsion system with low leakage rate and improved propulsion efficiency

Growing community of inventors

Moissy-Cramayel, France

Caroline Marie Frantz