Abstract: An anti-vibratory device with rotary compensation weights. According to the invention, said device comprises two sets (2, 3) of two identical rotors (4, 5-6, 7) with respective eccentric compensation weights (4A, 5A-6A, 7A), said units being symmetrically disposed in relation to an axis of symmetry and the axes of rotation of said rotors being parallel between themselves and orthogonal in relation to the axis of symmetry; and a rotational drive system (8) for said rotors. Advantageously, the inventive device comprises controllable mobile equipment (11) carrying said drive system (8) and being able to slide along the axis of symmetry in order to drive the dephasing of the rotors with eccentric compensation weights associated with the sets.

Abstract: The device of the invention comprises a framework fixed to the structure of a vehicle, which framework carries a generally plane seat proper via mobility means for providing the seat proper with mobility relative to the framework. The seat proper is rigid and is suspended from the framework via a deformable structure which is deformable in at least one of the dimensions of the plane of the seat proper. The plane of the framework for supporting the seat proper is disposed above the plane of the seat proper that is supported by the framework, so as to depart a pendular type structure to the means providing mobility to the seat proper relative to the framework.

Abstract: Improving convertible aircraft of the aforementioned type mainly in terms of the active control of vibrations, while at the same time avoiding the addition of significant additional masses for essentially countering the excitations caused by the rotors and, secondarily, of making such an aircraft easier to control in terms of roll in airplane mode. In this secondary objective, these improvements aim to allow simplifications to the maneuvering and command means for controlling the aircraft in terms of roll in airplane mode and preferably, at the same time, a simplification of the command and maneuvering means performing the functions of augmenting lift and reducing offsetting power. The invention also relates to improvements made to the convertible aircraft of the aforementioned type to give them the ability to land in airplane mode (without converting beforehand from airplane configuration to helicopter configuration).

Abstract: The resonator includes pendular bodies, each oscillating around an axis on a support coaxial with the rotor mast and rotated by the rotor head around the axis of the rotor at a rotational speed above the rotational speed of the rotor.