Patent ID: 11965474
Assignee: SAFRAN NACELLES
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A control system of a thrust reverser for a nacelle of a propulsion unit including an engine and accommodating movable thrust reversers, the movable thrust reversers including at least one door movable between a direct jet position in which the at least one door provides aerodynamic continuity of the nacelle and a reverse jet position in which the at least one door opens at least one passage in the nacelle so that the nacelle receives an air flow diverted by the movable thrust reversers to return the air flow outwards and forwards, the control system comprising:
at least one maneuvering actuator arranged so as to move the at least one door between the direct jet and reverse jet positions;
at least one locking/unlocking device unlockable under load allowing locking and/or unlocking of the at least one door, the at least one locking/unlocking device being movable between a closure position in which the at least one locking/unlocking device holds the at least one door in the direct jet position and an opening position in which the at least one door is released;
a central control valve forming an isolation control unit;
first and second control valves each fed by the central control valve; and
a spool control valve fed at least by the first and second control valves, the spool control valve being configured so that a pressure difference between two inlets of the first and second control valves provides a displacement of the spool control valve between a first stable position and a second stable position,
wherein each of the at least one maneuvering actuator and the at least one locking/unlocking device is configured to be controlled by at least one of the first control valve, the second control valve and the spool control valve.