A vehicle having a suspension comprising a double acting ram (13, 14, 17, 18) connecting each wheel (1, 2, 3, 4) independently to the body (5) of the vehicle, each ram (13, 14, 17, 18) having respective first (13a, 14a, 17a, 18a) and second (13b, 14b, 17b, 18b) chambers that vary in volume as the wheels move relative to the vehicle body (5). Each front wheel ram (13, 18) is connected to the diagonally opposite rear wheel ram (14, 17) by a respective pair of conduits (8, 10) and (8a, 10a) arranged so the first chamber (13a, 18a) of one wheel is connected to the second chamber (14b, 17b) of the other wheel. Each first and second chamber and the conduits connected thereto are filled with fluid and independent of external fluid and pressure sources. Diagonal interconnection of the front and rear rams minimizes roll movement in a lateral direction and pitch movement in the longitudinal direction of the vehicle.

Vehicle suspension system

A blade comprises a lightweight core, a composite material disposed on the core, and a skin located on the composite material The composite material comprises fibers incorporated into a thermoplastic resin matrix in the form of a prepreg sheet or wet layup The rotor blade may also comprise a front edge member attached along at least a portion of a leading edge of the core, a rear edge member attached along at least a portion of a trailing edge of the core, and a skin located over the core, the front edge member, and the rear edge member The rotor blade may also comprise a spar extending through the core along a longitudinal axis of the rotor blade, and a skin located over the core and the spar The edge members and the spars may be fabricated from thermoplastic material

Thermoplastic rotor blade

In a rear suspension comprising left and right trailing arms which are pivoted on the vehicle body at the front ends for vertical swinging motion by way of rubber bushings, and a torsion beam connecting the trailing arms, nonlinear toe characteristics of the outer rear wheel are obtained by mounting the trailing arms so that the pivotal axes thereof intersect on the front side of the line joining the rubber bushings on the front ends thereof, and selecting the elastic characteristics of the rubber bushings in the direction perpendicular to the pivotal axis of the corresponding trailing arm in the horizontal plane including the pivotal axis.

Vehicle rear suspension

A pitch link having an adjustable length is constructed as a diamond-shaped frame by coupling and fixing four flexible beams at end portions thereof. Spherical bearings are provided on opposite ends of the structure. A turnbuckle shaft is screwed into vertices of the structure and turned to the length of the pitch link. The turnbuckle shaft can be rotated by a detachable motor.

Pitch link for rotary wing aircraft and automatic adjuster thereof

The structural element (10) comprises a shell (12) made of at least one layer of composite material comprising a fibre-reinforced polymeric matrix, and a core (14) made of ductile material, in particular of metal, such as high-strength steel. Advantageously, the shell (12) comprises two half-shells (12a, 12b) joined to each other, for instance by heat fusion of the respective polymeric matrices or by gluing with structural adhesives, and the core (14) is attached inside the shell (12).

Composite structural element, particularly for a vehicle suspension, and method for manufacturing the same

Suspension for a two-sheeled undercarriage of a vehicle comprising two arms pivotable about an axis transversal to said vehicle, each arm carrying one wheel, and an assembly of tubes of axes parallel to said transversal axis and made of a composite material of fibers and synthetic material. The suspension according to the invention is remarkable in that said assembly comprises a first tube integral with the vehicle chassis by each of its ends, and about which tube each arm can pivot, as well as two second tubes integral by each of their ends with one of said arms, said first tube and said second tubes being interconnected in their middle part.

Suspension with pivotable arms

The present invention relates to a suspension for a train of two wheels of a vehicle, comprising two arms oscillating about an axis transverse with respect to said vehicle and each bearing one of said wheels, elastic means and damper means being associated with said arms respectively to dampen the vertical movements of said wheels, wherein the transverse shaft for oscillation of said arms is itself mounted to oscillate parallel to the longitudinal direction of the vehicle. The invention is more particularly applicable to improving passenger comfort in the vehicle and for improving the road-holding qualities of said vehicle.

Vehicle suspension incorporating oscillating arms

The invention relates to a suspension system for a set of vehicle wheels with rigid axle, wherein it comprises, on the one hand, a horizontal and transverse torsion bar articulated so as to be able to rotate about its longitudinal axis and, on the other hand, two longitudinal elastic blades which are disposed laterally each on one side of said chassis and of which each is rigidly connected at one of its ends to said torsion bar, is fixed in its intermediate part to said rigid axle and is in abutment at its other end against said chassis. The invention is more particularly applicable to a suspension system for road tractor.

Suspension system for a set of vehicle wheels with rigid axle

A device comprising cyclic plates driven by flexible blades for controlling a helicopter rotor. The device comprises upper flexible curved blades pivotably mounted on the rotor shaft, above the rotary plate, and pivotably mounted by a ball joint on the rotary plate, so as to cause it to rotate with the rotor shaft and at least one lower flexible curved blade, pivoting on an element of the structure of the helicopter and pivotably mounted by a ball joint on the non rotary plate, so as to secure it against rotation. The transverse stiffness of the blades ensures centering of the plates whereas the longitudinal flexibility of the blades and their end pivot point allow the blades to follow the axial translational and tilting movements imparted to the plates by pilot controls pivotably mounted to the non rotary plate, and transmitted to levers controlling the angle of attack of the rotor blades by means of links pivotably mounted to the rotary plate.

Device comprising cyclic plates driven by flexible blades, for controlling a helicopter rotor

Suspension for a set of two wheels of a vehicle, comprising two arms (1) oscillating about an axis transverse to said vehicle and each bearing one of said wheels, elastic means and damper means being associated with said arms respectively to dampen the vertical movements of said wheels. According to the invention, this suspension is characterized in that said transverse axis (3) of said oscillating arm (1) is itself mounted to oscillate parallel to the longitudinal direction of the vehicle. Improved passenger comfort of the vehicle and the handling of it.

Michel Bonfils

Papers

Suspension with pivotable arms

Vehicle suspension incorporating oscillating arms

Suspension system for a set of vehicle wheels with rigid axle

Device comprising cyclic plates driven by flexible blades, for controlling a helicopter rotor

Trailer-arm-type suspension for a two-wheeled axle of a vehicle