Turbomeca

Safran Helicopter Engines

Yann Mouze

Edgar H Haehner

Patrice Laborde

Philippe Denis Joubert

Frederic Ferdinand Jacques Batlle

Frederic Segura

Philippe Perot

Frédéric Segura

Frederic Ferdinand Batlle

Philippe Joubert

A method of starting a turbomachine, performed by an electronic unit, the turbomachine including a gas turbine engine including at least one rotor and a starter to drive the rotor in rotation, the method including: receiving an order to start the turbomachine, and executing in response to receiving the order to start: a primary acceleration during which the starter is operated to increase speed of rotation of the rotor; a thermal homogenization during which the starter is operated to keep the speed of rotation of the rotor constant or to decrease it until a predetermined condition is satisfied; after the predetermined condition is true, a secondary acceleration in which the starter is operated to increase the speed of rotation of the rotor; and an ignition in which ignition of the engine is ordered.

Method of starting a turbomachine while reducing thermal unbalance

A centrifugal compressor for a turbine engine, including a cover with an upstream end and a downstream end; a casing presenting an upstream edge and a downstream edge; and a bladed impeller mounted to rotate in the casing. The cover covers the blades of the impeller to define an outside surface of a gas-flow passage extending between the upstream and downstream edges of the casing, while being fastened to the upstream edge of the casing via its upstream end while its downstream end remains free. The cover further includes an abutment limiting axial movement of its downstream end relative to the downstream edge of the casing while the compressor is in operation.

Compressor cover for turbine engine having axial abutment

Growing community of inventors

Limendous, France

Yann Mouze