Abstract: The present disclosure relates to a hydraulic control system for a thrust reverser of an aircraft turbofan nacelle. The hydraulic control system includes devices for actuating and controlling the reverser having hydraulic locks and cylinders, the corresponding hydraulic solenoid valves, and sensors. The turbofan includes a full-authority electronic computer or aircraft having an avionics computer that gives reverse thrust commands. The system further includes an electronic concentration module, different from the computer, which concentrates the data relating to the operation of the reverser actuation and control devices. The module includes internal contact switches for controlling the solenoid valves, a device for monitoring the sensors, a device for analog or digital processing of the data, and a bus for communication with the computer.

Abstract: The present disclosure relates to a hydraulic control system for a thrust reverser of an aircraft turbofan nacelle. The hydraulic control system includes devices for actuating and controlling the reverser having hydraulic locks and cylinders, the corresponding hydraulic solenoid valves, and sensors. The turbofan includes a full-authority electronic computer or aircraft having an avionics computer that gives reverse thrust commands. The system further includes an electronic concentration module, different from the computer, which concentrates the data relating to the operation of the reverser actuation and control devices. The module includes internal contact switches for controlling the solenoid valves, a device for monitoring the sensors, a device for analog or digital processing of the data, and a bus for communication with the computer.

Abstract: A hydraulic control system of a thrust reverser for a turbojet engine nacelle includes a hydraulic machine fed by a pressure source, which motorizes actuators carrying out the thrust reverser stroke, wherein the hydraulic machine includes a variable displacement.

Abstract: This system for actuating at least one aircraft nacelle element comprises at least two actuators (A1, A2, A3) kinematically linked together, a main hydraulic (or electric) generation circuit (1) able to operate at least one (A1) of the two actuators, and a secondary electric (or hydraulic) generation circuit (13) able to operate the other actuator (A3).

Abstract: A device that is capable of actuating at least two cowls of a thrust reverser. The device includes for each cowl, (a) at least two actuators suitable for opening and closing the cowl, (b) at least one slave flexible transmission shaft establishing mechanical connection between the two actuators of the cowl and (c) at least one mechanical coupling device associated to the at least one slave flexible transmission shaft. The device is further comprised of one motor, and at least two master flexible transmission shafts, each master flexible transmission shaft establishing mechanical connection between the motor and one respective mechanical coupling device. Upon rotation of the electrical motor, the master flexible transmission shafts are actuated, which causes actuation of the mechanical coupling devices, which causes actuation of the slave flexible transmission shafts and thereby the extension or retraction of the actuators.

Abstract: The invention relates to a system for actuating and controlling at least one mobile cowling (1) of a turbojet engine nacelle that comprises at least one electric-control locking means (4) of said cowling, at least one actuator (2) for driving said cowling, characterised in that the system further comprises a central electronic control unit (15) capable of driving the locking means and the actuator according to a predetermined actuation sequence. The invention also relates to a nacelle including a maintenance mobile cowling provided with such an actuation system.

Abstract: A method for opening a mobile cowl actuated by a motor and equipping a turbojet thrust reverser that includes at the start of the opening phase, a bridling step whereby the speed of the mobile cowl is maintained lower or equal to a predetermined threshold speed.