SYSTEMS FOR HARVESTING ROTATIONAL WHEEL ENERGY FOR LANDING GEAR RETRACTION

    公开(公告)号:EP4393816A3

    公开(公告)日:2024-09-04

    申请号:EP24176460.4

    申请日:2021-01-11

    IPC分类号: B64C25/22

    摘要: A system for extracting energy for landing gear retraction, comprising: a first landing gear assembly including a first wheel (100); a first actuator (150;152;154;156) configured to control retraction of the first landing gear assembly; a first wheel pump (112) rotationally coupled to the first wheel, the first wheel pump comprising at least one of a first hydraulic pump or a first wheel powered electric motor, wherein the at least one of the first hydraulic pump or the first wheel powered electric motor is configured to generate an output in response to rotation of the first wheel, and wherein the output of the at least one of the first hydraulic pump or the first wheel powered electric motor is configured to actuate the first actuator; a second landing gear assembly including a second wheel; a second actuator configured to control retraction of the second landing gear assembly; and a second wheel pump rotationally coupled to the second wheel, the second wheel pump comprising at least one of a second hydraulic pump or a second wheel powered electric motor..

    RETRACTION / EXTENSION OF A LANDING GEAR IN AN AIRCRAFT

    公开(公告)号:EP3248869B1

    公开(公告)日:2018-09-12

    申请号:EP16400016.8

    申请日:2016-05-25

    发明人: Grieser, Wolfram

    IPC分类号: B64C25/22 B64C25/60

    CPC分类号: B64C25/60 B64C25/22

    摘要: The invention concerns a telescoping strut (1) for a retractable landing gear (LG) in an aircraft (A). The telescoping strut (1) comprises a pre-pressurized and central extension chamber (12) extending along the telescoping strut (1) and a surrounding retraction chamber (13). For retraction, an hydraulic generation architecture (HG) of the aircraft (A) feeds a single input / output passage (24) of the surrounding retraction chamber (13) with a overcoming fluid pressure that overwhelms a extension positive pressure in the central extension chamber (12) and opposes the effect of the pre-pressurizing. The retraction system (S) is for instance for a rotorcraft.

    ROD END
    5.
    发明公开
    ROD END 审中-公开
    杆子的末端

    公开(公告)号:EP3239045A1

    公开(公告)日:2017-11-01

    申请号:EP17168842.7

    申请日:2017-04-28

    发明人: BAIRD, Bradley W.

    IPC分类号: B64C25/22 F15B15/14

    摘要: A rod end of an actuator assembly is disclosed. The rod end may comprise a rod piston end (302) having an outer profile, and a rod joint end (304) opposite the rod piston end, wherein the outer profile comprises an elliptical shape comprising a major diameter (312) and a minor diameter (314), wherein the major diameter may be larger than the minor diameter in length.

    摘要翻译: 公开了一种致动器组件的杆端。 杆端可以包括具有外部轮廓的杆活塞端部(302)以及与杆活塞端部相对的杆接合端部(304),其中外部轮廓包括椭圆形形状,该椭圆形形状包括大直径(312)和小直径 (314),其中所述大直径可以大于所述小直径的长度。

    HYDRAULIC CYLINDER FOR AIRCRAFT LANDING GEAR
    6.
    发明公开
    HYDRAULIC CYLINDER FOR AIRCRAFT LANDING GEAR 审中-公开
    液压油ZYLINDERFÜRFLUGZEUGFAHRWERK

    公开(公告)号:EP3150863A1

    公开(公告)日:2017-04-05

    申请号:EP16189261.7

    申请日:2016-09-16

    IPC分类号: F15B15/22 B64C25/22

    摘要: A hydraulic cylinder includes: a cylinder tube; a piston; a piston rod; a pair of end covers; and a snubbing mechanism configured to reduce the moving speed of the piston after the piston reaches the vicinity of the end of its stroke. The snubbing mechanism includes: a supply/discharge port formed in an associated one of the end covers; a valve configured to open and close the supply/discharge port; a connector configured to connect the valve and the piston together; and at least one recess extending from the edge of the supply/discharge port. When the piston approaches the end of its stroke, the valve closes the supply/discharge port to form a throttle oil passage, and hydraulic oil is discharged through the throttle oil passage to reduce the moving speed of the piston.

    摘要翻译: 液压缸包括:缸筒; 活塞 活塞杆 一对端盖; 以及缓冲机构,其构造成在活塞到达其行程结束的附近之后减小活塞的移动速度。 缓冲机构包括:形成在相关一个端盖中的供给/排出口; 构造成打开和关闭供给/排出口的阀; 连接器,其构造成将所述阀和所述活塞连接在一起; 以及从供给/排出口的边缘延伸的至少一个凹部。 当活塞接近行程结束时,阀关闭供油/排出口,形成节流油通道,液压油通过节流油通道排出,以降低活塞的移动速度。

    SYSTÈME DE COMMANDE COMPORTANT UNE TIGE DE COMMANDE
    10.
    发明公开
    SYSTÈME DE COMMANDE COMPORTANT UNE TIGE DE COMMANDE 审中-公开
    STEUERSYSTEM,DAS EINSCHALTGESTÄNGEUMFASST

    公开(公告)号:EP3051149A1

    公开(公告)日:2016-08-03

    申请号:EP16152489.7

    申请日:2016-01-22

    发明人: ATAMAN, Gary

    IPC分类号: F15B15/28 F16J15/18 G01D5/04

    摘要: Système de commande (1) comportant une tige de commande (5) s'étendant entre :
    - une première zone (2) située dans une enceinte hydraulique délimitée par une paroi d'enceinte (3) ; et
    - une seconde zone (4) située à l'extérieur de ladite enceinte hydraulique ;

    le système de commande (1) comportant en outre des moyens d'étanchéité (6) disposés autour et contre cette tige de commande (5) pour s'opposer au passage de fluide entre les première et seconde zones (2, 4).
    Le système comporte une pièce de guidage (7) assemblée de manière amovible vis-à-vis de la paroi d'enceinte (3), les moyens d'étanchéité (6) sont assemblés à l'intérieur de la pièce de guidage (7) de manière à autoriser un déplacement relatif de la tige (5) par rapport à la pièce de guidage (7) tout en réalisant une étanchéité entre lesdites première et seconde zones (2, 4).

    摘要翻译: 控制系统(1)包括控制杆(5),所述控制杆(5)在位于由室壁(3)限定的液压室中的第一区域(2)和位于所述液压室外部的第二区域(4)之间延伸。 所述控制系统(1)还包括围绕所述控制棒(5)布置的与所述第一和第二区域(2,4)之间的流体通过的密封件(6)。 所述系统还包括相对于所述室壁(3)可移除地组装的导向件(7),所述密封件(6)组装在所述导向件(7)内,以允许所述杆(5)相对于 同时在第一和第二区域(2,4)之间实现密封。