Snecma

Safran Aircraft Engines

Hispano Suiza

Florian Poinsot-Berthelot

Valerio Gerez

Edouard Joseph Jadczak

Serge Dominique Pettinotti

Serge Benyamin

Vincent Abousleiman

Benjamin Petard

Sebastien Bourget

Mickael Moreiras

Robin Leynaud

Diane Gueudry

Bernard Cartier

Nicolas Perron

An aircraft turbomachine () comprising a gas generator () and a fan () located upstream of the gas generator and surrounded by a fan casing (), the gas generator comprising a high-pressure body () and a low-pressure body () which is connected to a shaft of the fan (), the high- and low-pressure bodies comprising compressors () between which is located an intermediate casing () which connects the gas generator to said fan casing, the turbomachine further comprising first decoupling means () configured to disconnect the fan shaft from the low-pressure body, following a detection of a critical event, characterised in that it comprises second decoupling means configured to disconnect a blades stator from the compressor of the low-pressure body opposite the intermediate casing, these second fixing means comprising fusible means () for fixing the bladed stator to the intermediate casing.

Aircraft turbomachine comprising decoupling means

A power transmission system for a turbine engine is provided. The power transmission system includes a transmission shaft that is connected to a drive shaft by bevel gears, and that drives equipment or accessories. The transmission shaft is designed to operate under supercritical conditions and includes a damper system for damping vibration at its resonant speed.

Power transmission system for a turbine engine

A shaft mounted to rotate with respect to another fixed or rotary element of a rotary engine to which the shaft is connected by at least one bearing, it being possible for the engine to operate in at least two different operating speeds, the shaft comprising a connection to the bearing that has a state of stiffness that varies with engine operating speed. The connection comprises a squirrel cage comprising at least two points of attachment, one to the bearing and one to the shaft, between which points there extends a flexible portion, the shaft comprises an actuator able to adopt at least two positions for controlling the state of stiffness of the squirrel cage, the actuator comprises a piston designed to be displaced by oil pressure in a chamber formed between the piston and shaft from a rigid state of stiffness position to a soft state of stiffness position.

Rotary engine with shaft bearing having two stiffnesses, rotary engine shaft and means of connection between a rotary engine shaft and a bearing

Growing community of inventors

Samois sur Seine, France

Florian Poinsot-Berthelot