Abstract: A dynamic imbalanced force generator includes a pair of eccentric masses and a shaft frame. The generator further includes at least one support plate of a motor arranged radially with respect to the shaft frame, and a gear system. A second imbalance is arranged between a first imbalance and the shaft frame, and coaxially with respect to the first imbalance. At least one motor is supported by the plate and engaged with at least one of the first and second imbalances by the gear system. The support plate and the motor are arranged between the imbalances and the shaft frame.

Abstract: Provided is a dynamic force generator having a supporting shaft, a first rotor including an internal bore housing the supporting shaft and bearings arranged between the supporting shaft and the internal bore so that the first rotor is mounted rotatably in relation to the supporting shaft, an external bore having an inner face provided with a first set of permanent magnets. A first unbalanced mass is within the internal bore of the first rotor and mounted opposite an outer face of the external bore of the first rotor. A second rotor is mounted rotatably in relation to the first rotor, via an antifriction component provided between the first rotor and the second rotor, and includes an internal bore housing the internal bore of the first rotor so that the internal bores of the first and second rotors are concentric, and an external bore with a second set of permanent magnets.

Abstract: Provided is a dynamic force generator having a supporting shaft, a first rotor including an internal bore housing the supporting shaft and bearings arranged between the supporting shaft and the internal bore so that the first rotor is mounted rotatably in relation to the supporting shaft, an external bore having an inner face provided with a first set of permanent magnets. A first unbalanced mass is within the internal bore of the first rotor and mounted opposite an outer face of the external bore of the first rotor. A second rotor is mounted rotatably in relation to the first rotor, via an antifriction component provided between the first rotor and the second rotor, and includes an internal bore housing the internal bore of the first rotor so that the internal bores of the first and second rotors are concentric, and an external bore with a second set of permanent magnets.

Abstract: A dynamic imbalanced force generator includes a pair of eccentric masses and a shaft frame. The generator further includes at least one support plate of a motor arranged radially with respect to the shaft frame, and a gear system. A second imbalance is arranged between a first imbalance and the shaft frame, and coaxially with respect to the first imbalance. At least one motor is supported by the plate and engaged with at least one of the first and second imbalances by the gear system. The support plate and the motor are arranged between the imbalances and the shaft frame.

Abstract: The invention relates to a controllable hydraulic turnbuckle for a power transmission member having a first mode of operation with increased forces and a second mode of operation with less forces, comprising: first (10) and second (11) lower and upper assembly elements, respectively, arranged at axially opposite ends; a tube (7) rigidly connected to the first assembly element (10) inside which a piston (5) slides, said piston being rigidly connected to the second assembly element (11); a resilient sleeve (3) surrounding the tube (7) and the piston (5), defining a low-pressure chamber (21); a prestressed spring (12) between the first (10) and second (11) assembly elements; a first channel (62, 63) provided inside the first (10) assembly element for placing the low-pressure chamber (21) and the inside of the tube (7) in communication, said first channel being provided with a first plugging device (8); a second channel (51, 52) provided in said piston (5), the end of which leads into the tube (7), said second ch

Abstract: The present invention provides an anti-icing/de-icing system and method using ultrasound waves for an external surface of a structure likely to be iced, such as an aircraft wing or engine nacelle, and such a structure incorporating this system. The system comprises a plurality of piezoelectric transducers with which the structure is fitted, opposite this external surface, and this system is such that it comprises scanning devices at least one matrix of elementary meshes predefined in this surface in relation to an even arrangement of a group of these transducers, these scanning devices being able to focus the waves emitted by all or some of the transducers of the or each group on these meshes one after the other, via signal summing devices coupled to these scanning devices and able to produce, for each mesh, a summation of the signals obtained from the transducers emitting these waves.

Abstract: The present invention provides an anti-icing/de-icing system and method using ultrasound waves for an external surface of a structure likely to be iced, such as an aircraft wing or engine nacelle, and such a structure incorporating this system. The system comprises a plurality of piezoelectric transducers with which the structure is fitted, opposite this external surface, and this system is such that it comprises means of scanning at least one matrix of elementary meshes predefined in this surface in relation to an even arrangement of a group of these transducers, these scanning means being able to focus the waves emitted by all or some of the transducers of the or each group on these meshes one after the other, via signal summing means coupled to these scanning means and able to produce, for each mesh, a summation of the signals obtained from the transducers emitting these waves.