公开(公告)号：US20140156113A1

公开(公告)日：2014-06-05

申请号：US13779397

申请日：2013-02-27

Applicant: MESSIER-BUGATTI-DOWTY

Inventor： Michael BENMOUSSA ,  David POIRET ,  Jerome FRAVAL

IPC: B64C19/00

CPC classification number: B64C19/00 ,  B64C25/50 ,  G05D1/0083

Abstract: The invention relates to a method of managing a steering command for a steerable portion 3 of nose landing gear 2 of an aircraft 1, the method implementing servo-control to servo-control a steering actuator 6 to an angle position setpoint θset for the steerable portion 3, the servo-control including calculating an error ε by subtracting a reference angle θest from the angle position setpoint θset. According to the invention, the reference angle θest is an angle determined by calculation as a function of a longitudinal speed Vlong and a yaw rate τ of the aircraft 1.

Abstract translation: 本发明涉及一种用于管理飞机1的起落架2的可转向部分3的转向指令的方法，该方法实现伺服控制以将转向致动器6伺服控制到角度位置设定点;为 可控部分3，伺服控制包括计算误差＆egr; 通过从角度位置设定点＆thetas; set中减去参考角度＆amp; est; est。 根据本发明，参考角度θ是通过作为飞行器1的纵向速度Vlong和横摆角速度τ的函数的计算确定的角度。

公开(公告)号：US20160332726A1

公开(公告)日：2016-11-17

申请号：US15151593

申请日：2016-05-11

Applicant: MESSIER-BUGATTI-DOWTY

Inventor： Jerome FRAVAL ,  David FRANK

IPC: B64C25/50 ,  B64C25/58 ,  F16F9/12 ,  B64C25/34

CPC classification number: B64C25/505 ,  B64C25/34 ,  B64C25/58 ,  F16F9/12 ,  F16F9/182

Abstract: The invention relates to an aircraft undercarriage comprising: a strut (1) for connecting to the aircraft, a slide rod (3) slidably engaged in leaktight manner in the strut via the bottom opening, which rod carries at least one wheel at its bottom end, a diaphragm (7) carried by a support (8) attached to the top wall of the strut to co-operate in leaktight manner with an inside wall of the slide rod so as to define a first chamber (C1) under the diaphragm inside the rod and completely filled with hydraulic fluid, and a second chamber (C2) above the diaphragm and partially filled with hydraulic fluid, a throttle needle (10) secured to the slide rod and penetrating into a calibrated orifice (12) in the diaphragm so as to define a calibrated fluid passage between the first and second chambers, and angular connection means for imposing an angular position on the slide rod relative to the strut. According to the invention, the undercarriage includes at least one vane (20) fastened to the end of the throttle needle in order to extend inside a portion of the second chamber that is filled with hydraulic fluid.

Abstract translation: 本发明涉及一种飞机起落架，包括：用于连接到飞行器的支柱（1），滑动杆（3），其通过底部开口以密封方式可滑动地接合在支柱中，该杆在其底端承载至少一个轮 ，由支撑件（8）承载的隔膜（7），所述支撑件（8）附接到所述支柱的顶壁，以与所述滑杆的内壁以密封方式配合，以在所述隔膜内部限定第一室（C1） 所述杆并且完全充满液压流体，并且在隔膜上方并且部分地填充有液压流体的第二腔室（C2），固定到滑动杆并且渗透到隔膜中的校准孔口（12）中的节流针（10） 以便限定第一和第二腔室之间的经校准的流体通道，以及用于在滑杆上相对于支柱施加角位置的角度连接装置。 根据本发明，起落架包括至少一个固定到节流针端部的叶片（20），以便在填充有液压流体的第二室的一部分内延伸。