摘要:
An insulating coating (1) with high damping power and suitable for being fastened to a structure (2). The coating comprises a dissipater mesh made up of a plurality of dissipater elements (3) and of nodes (4) with the bottom end (4′) of each node being fastened to said structure (2). Each dissipater element is secured to first and second nodes (6, 7). The bottom ends (4′) of said nodes (4) project from said dissipater elements (3) so as to be suitable for creating an empty space (5) between the dissipater elements (3) and said structure (2). In addition, at least one dissipater element (3) is provided with at least one branch (10, 20) provided with a heavy element (30, 31, 32). The heavy element (30, 31, 32) has a first mass that is greater than or equal to a second mass of said branch (10, 20).
摘要:
The present invention relates to a power plant (10) having a piston engine (30) driving a conventional gearbox (20) dimensioned for a turbine engine, said piston engine (30) comprising a first row (31) of pistons (33) presenting an angle (α) relative to a second row (32) of pistons (33). The power plant includes a flywheel (50) and a torsion shaft (40) set into motion by said pistons (33), said torsion shaft (40) being arranged between the first and second rows (31, 32) of pistons.
摘要:
An anti-vibratory device with rotary compensation weights includes two sets of two identical rotors with respective eccentric compensation weights, the units being symmetrically disposed in relation to an axis of symmetry and the axes of rotation of the rotors being parallel between themselves and orthogonal in relation to the axis of symmetry; and a rotational drive system for the rotors. Advantageously, the device includes controllable mobile equipment carrying the drive system 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.
摘要:
The present invention relates to a power plant (10) having a piston engine (30) driving a conventional gearbox (20) dimensioned for a turbine engine, said piston engine (30) comprising a first row (31) of pistons (33) presenting an angle (α) relative to a second row (32) of pistons (33). The power plant includes a flywheel (50) and a torsion shaft (40) set into motion by said pistons (33), said torsion shaft (40) being arranged between the first and second rows (31, 32) of pistons.
摘要:
A device (10) for damping the vibration of a structure is provided. The device includes a main mass (12) and an auxiliary mass (20) mounted on a support (11) that is suitable for having one end held fixedly in the structure (1). The auxiliary mass (20) includes a threaded member (21) arranged around a drive screw (40) inside a casing (30) fastened to the main mass (12). The device includes manual drive (50) engaging the drive screw (40) to move the auxiliary mass (20) along the drive screw (40).
摘要:
An energy absorber element comprises an absorber portion having first and second distal ends and having a first elongate element and a second elongate element facing the first elongate element and connected to the second element solely at the first and second distal ends, a first anchor point secured to the first distal end of the absorber portion, and a second anchor point secured to the second distal end of the absorber portion, wherein each of the first and second elongate elements includes a succession of straight-line segments parallel to one another and at least one circularly-arcuate segment such that at least two successive straight-line segments are connected together by one of the at least one circularly-arcuate segment.
摘要:
A framework fixed to the structure of a vehicle, which framework carries a generally planar seat proper via mobility structure 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 impart a pendular type structure to the structure providing mobility to the seat proper relative to the framework.
摘要:
The present invention relates to an absorbent covering (1) having high damping power, secured on a structure (2) and comprising a dissipater mesh made up of a plurality of dissipating elements (3) and of nodes (4) each having its bottom end (4′) secured on said structure (2). In remarkable manner, said bottom ends (4′) of said nodes (4) project from said dissipating elements (3) so as to leave an empty space (5) between the dissipating elements (3) and said structure (2), said absorbent covering (1) including main absorbent elements (6) arranged in said empty space (5), each of said main absorbent elements (6) being secured firstly to a bottom face (3′) of a said dissipating element (3) and secondly to said structure (2).
摘要:
The invention relates to a mechanical transmission system for a rotorcraft, the system including a supercritical transmission shaft (10) and an active magnetic damper (17 to 20) secured to the structure (34) of the aircraft via a mechanical damper (50).
摘要:
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.