摘要:
A variable-section nozzle for an aircraft nacelle includes a deformable portion of which is movable between a narrow section position and a wide section position. In particular, the variable-section nozzle includes piezoelectric actuators and a controller to control the piezoelectric actuators in order to displace the deformable portion between the narrow and wide section positions. The piezoelectric actuators can be disposed on at least one faces of the deformable portion or be disposed end-to-end to form actuating rods.
摘要:
The present disclosure relates to a monitoring assembly for detecting structural detects. The monitoring assembly includes a composite sandwich structure with two distinct strata, a calculation unit and a plurality of sensors for generating signals representative of an amplitude or frequency of vibrations produced in a structure. Each sensor is formed by an electromechanical microsystem including a converter for converting mechanical energy into electrical energy. In particular, the calculation unit evaluates differences between a current transfer function resulting from the signals and a predetermined nominal transfer function, compares each of the differences with a respective detection threshold, and evaluates a size or a position of the structural defect in the structure.
摘要:
A test device for testing an actuating system for a thrust reverser includes a test bench, an input device, controllers and several determination components. The thrust reverser includes actuating cylinders, and the test bench includes a test structure which has counter-thrust cylinders connected to the actuating cylinders to be tested. Input parameters corresponding to external forces could be entered by the input device, and a first determination component determines a digital model of a movable structure of the thrust reverser. In addition, a second determination component determines force to be exerted by the counter-thrust cylinders by using the digital model and the input parameters. A third determination component determines a control set-point applied to the counter-thrust cylinders, and first and second controllers apply control set-points to counter-thrust and actuating cylinders, respectively. A fourth determination component determines at least one dynamic characteristic of each actuating cylinder.
摘要:
The present disclosure provides an electric thrust reverser system for an aircraft engine nacelle, including a mechanism for actuating a thrust reverser mechanism. The actuating mechanism includes a first drive cylinder and a second drive cylinder. Each cylinder includes a mechanical connection casing, a primary lock (8) and a movable rod secured to a point connected to the associated thrust reverser mechanism. A motor-actuated drive unit is mechanically connected, via flexible shafts, to the mechanical connection casings of each drive cylinder and set in motion by the command of a control unit via an electrical connection. A tertiary lock is disposed for securing the associated thrust reverser mechanism, to a fixed structure of the nacelle.
摘要:
The present disclosure provides an electric de-icing/anti-icing device for a turbojet engine or turbo-prop nacelle element to be protected from icing. The device includes: a heating assembly including first and second heating stages positioned in the nacelle element; an electricity supply circuit delivering a primary voltage to the first heating stage of the heating assembly. In particular, the electricity supply circuit includes an electricity source, and a de-icing/anti-icing circuit which is connected to the heating assembly and supplied voltage by the electricity source. Furthermore, the de-icing/anti-icing device includes components to supply a complementary voltage to the second heating stage of the heating assembly.
摘要:
A thrust reverser device for an aircraft includes at least two thrust reversers, and each of them includes a movable cowl movably actuated by an actuator driven by an electric motor. The electric motor is powered by a single power-conversion module including at least one autotransformer which is supplied with an alternating electric voltage and connected to at least one rectifier stage converting the alternating electric voltage into a direct voltage. The rectifier stage is connected to a current balancing stage and a current smoothing stage, supplying with the direct voltage the electric motor of the electric actuator of the movable cowl.
摘要:
A control system for a thrust reverser with a movable cowl includes an electromechanical actuator to actuate the movable cowl, an electric drive unit (M) driving the actuator, and a power control unit capable of controlling the electric drive unit (M). The power control unit moves the movable cowl to a closed position and/or to a deployed position. In particular, the control system includes an electronic circuit for electric braking capable of braking the electric drive unit (M), in case of overspeed of the drive unit when the movable cowl is moved to the closed position and/or to the deployed position.
摘要:
A control system for controlling an electrical device of a nacelle, the device having at least one element that is movable to a closed position and an open position. The control system includes at least one electromechanical member for actuating the movable element, a unit for electrically driving the electromechanical actuation member, and a controlling and monitoring unit for controlling the electrical drive unit so as to move the movable element to the closed and/or open position. The control system further includes a system for recovering braking power from the electrical drive unit during the movement of the movable element to the closed and/or open position.