Safran Aircraft Engines

Hugues Barbier

A hydraulic control circuit of a double-acting orientation cylinder to orient fan vanes of a turbojet engine, including an oil tank, a variable-displacement axial piston pump including a swash plate controlled by a double-acting control and compensation cylinder including a control chamber and a compensation chamber, the pump being supplied by the reservoir and having the outlet thereof configured to be able to be connected, via a supply pipe, to a second chamber of the orientation cylinder, a first chamber of the orientation cylinder being connected to the tank, the chambers of the control and compensation cylinder both being pressurised with a pressure corresponding to the outlet pressure of the pump, and wherein the control and compensation chambers are arranged to increase the tilt of the plate in order to increase the displacement of the pump when the pressurisation pressure of these chambers increases.

Growing community of inventors

MOISSY-CRAMAYEL, France

Hugues Barbier