Safran Aircraft Engines

Safran Electronics & Defense

Bastien Pierre Verdier

Caroline Marie Frantz

Jean Charles Olivier Roda

Antoine Jean-Philippe Beaujard

Tewfik Boudebiza

Catherine Pikovsky

Philippe Gérard Chanez

Sébastien Oriol

Christian Sylvain Vessot

Romain Jean-Claude Ferrier

Sébastien Christophe Chalaud

Lauren Davis

Christian Haddad

Daniel De Barros Soares

Claude Pierre Joannès Dupin

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

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 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

Double flow turbojet including an intermediate flow path dedicated to supplying with air via radial arms an exhaust casing of this turbojet

A duct for evacuating hot air from an aircraft engine is extended by a movable stack that can project from the wall such that the hot air is ejected a distance from the wall without risk of damaging the wall. The stack can, however, be retracted by a control device under circumstances of moderate engine speed, with the advantage that the drag of the wall, generally an outer nacelle, is then reduced.

Outlet for ejecting a hot gas through an aircraft engine wall

The outlet of a heat exchange circuit extending under a wall, such as a nacelle cowling of an aircraft engine, is divided into openings in the form of parallel slots which are elongated in the longitudinal direction and successively arranged in the transverse direction to divide the hot gas into streams while facilitating the circulation of fresh gas streams, originating from an external flow, on the intermediate laminates. The hot gas cannot fall back easily onto the outer face of the wall and risk damaging the wall, and the gas mixes more effectively with the fresh outdoor air. The openings are provided with nozzles flaring in the transverse direction and the downstream longitudinal direction to facilitate the mixing of the hot and cold gas streams.

Outlet of a hot-gas pipe of an aircraft engine passing through an engine wall

Growing community of inventors

Moissy-Cramayel, France

Bastien Pierre Verdier