摘要:
The present disclosure provides a stator assembly comprising a high damping core (210), a low damping core (220) coaxially aligned with the high damping core (210), a plurality of slots (312, 322) defined in at least one of the high damping core (210) and the low damping core (220) and extending between a first axial end face (602) and a second axial end face (603) of the at least one of the high damping core (210) and the low damping core (220), and a control winding (230) being integrally continuous and successively wound through the plurality of slots (312, 322), such that the control winding (230) enters the plurality of slots (312, 322) from at least one of the first axial end face (602) and the second axial end face (603). In various embodiments, the control winding (230) is configured to receive a current.
摘要:
An aircraft nosewheel damping arrangement comprises a nosewheel support axle (6) mounted for rotation about a steering axis (A) and an eddy current damper (24) coupled to the nosewheel support axle (6) to damp oscillations of the nosewheel support axle (6) about the steering axis (A).
摘要:
A torque link includes a spring-damper system structurally incorporated into the design and functionality of the torque link. The spring portion may take the form of a structurally rigid beam (108) while the damping portion may take the form of a damping mechanism or assembly (110). The damping mechanism is configured to damp out deformations in the beam and also configured to bottom out and become a structural tension/compression member when the load through the torque link exceeds a threshold load. The method damping may take a number of forms, such as, but not limited to, solid media damping, fluid damping with or without an orifice, a hydraulic or magnetic circuit, coulomb damping, etc.
摘要:
Le dispositif selon l'invention comprend un corps contenant un vilebrequin (8) auquel sont associés des vérins (12) mobiles autour d'axes de pivotement (14) et reliés à des organes de distribution comprenant des circuits d'alimentation et de retour portés par le corps et débouchant en regard d'au moins une face (16) des vérins perpendiculaire à leur axe de pivotement (14) et comportant au moins un orifice de commande (17).
摘要:
- Système de servocommande pour le train avant orientable (1) d'un véhicule dont au moins la partie inférieure (2,3,4) munie d'au moins une roue (3) peut tourner autour de son axe longitudinal (Z-Z). - Selon l'invention, ce système comporte un dispositif de filtration passe-haut (22) dont l'entrée reçoit un signal contenant au moins une partie représentative des oscillations autour de son axe longitudinal auxquelles ladite partie inférieure (2,3,4) dudit train avant (1) est soumise et dont la sortie est reliée à un dispositif permettant de soustraire le signal de sortie dudit filtre passe-haut de ladite différence (e = x - y) entre ledit ordre ( x ) et ledit signal ( y ) représentatif de l'orientation réelle ; et - en ce que la bande passante dudit filtre passe-haut englobe la fréquence d'oscillation propre de ladite partie inférieure (2,3,4) du train (1) autour de son axe longitudinal. - Suppression du shimmy
摘要:
A hydraulic shimmy damper that resolves drawbacks in several known shimmy dampers, such as damping characteristics that are dependent on oil temperature variations. The disclosed shimmy damper includes a hydraulic compensator (40) having an internal fluid volume that is significantly more important than a fluid volume expelled from the body of the shimmy damper when its piston moves fore and aft. The shimmy damper also includes a hydraulic manifold (30) arranged between the body and the hydraulic compensator and defining a transfer channel between chambers in the piston that is connected to the hydraulic compensator. The manifold receives interchangeable hydraulic cartridge-type valves (CV1,RV1; CV2,RV2) for metering the fluid flowing from the chambers to the transfer channel, and allows the fluid to freely enter the chambers from the transfer channel. The present shimmy damper is therefore much less sensitive to oil temperature variation under intense shimmy.
摘要:
The present disclosure provides an axial engagement-controlled variable damper comprising a rotor assembly (240, 540, 640) coupled to a rotor shaft and disposed about an axis of rotation and a stator (220, 520), coaxially aligned with the rotor assembly. The axial engagement-controlled variable damper may further comprise a flux sleeve (250), axially movable relative to the rotor assembly between at least a first position and a second position. The flux sleeve (250) may comprise a circumferential flange portion disposed radially between the rotor assembly and the stator, and may be configured to alter magnetic coupling between the stator and the rotor assembly in response being moved axially. The axialengagement controlled variable damper may be configured to generate a first drag torque in response to the flux sleeve being in the first position and a second drag torque in response to the flux sleeve being in the second position.
摘要:
A system for damping vibration and/or shimmy of a landing gear system is disclosed. The system is a friction-based damping system 22 that utilizes a friction pad 28 and friction wedge 32 to dampen vibration and/or shimmy. The friction pad may be coupled to an apex pin 24 that is used to couple a first torque link 16 and a second torque link 18 together. The friction wedge may be a made of a wearable and/or consumable material.