FE240 series Passenger Door Damper Actuator-航修札记

一、名称

Passenger Door Damper Actuator

乘客门阻尼器作动器

二、件号

FE240-002~-007,-002 AMDT A,-003 AMDT A,-004 AMDT A,-005 AMDT A,-005 AMDT B,-006 AMDT A,-006 AMDT B,-007 AMDT B,-007 AMDT C,-0021,-0031

三、章节号

52-11-05

四、适用机型

A320/A321

五、系统

52-door

舱门

六、安装位置

乘客门内

图片[1]-FE240 series Passenger Door Damper Actuator-航修札记

七、部件原理

A. General

The passenger door damper actuator installed on the passenger doors of the AIRBUS aircraft is intended for:

– slowing down the door at the end of its travel,

– ensuring door opening in all conditions.

It operates as a damper when opening or shutting the door under normal condition, and as an actuator when opening of the door is made impossible due to an external event.

A. 概述

安装于空客飞机乘客舱门上的乘客舱门阻尼器作动器旨在：

– 在舱门行程末端减缓其速度，

– 确保舱门在任何条件下均能开启。

在正常情况下开启或关闭舱门时，其作为阻尼器运作；当外部事件导致舱门无法开启时，则作为作动器运作。

C. Description and operation (Ref. Fig. 1)

C. 描述与工作原理（参见图1）

(1) Actuator Body and Piston

The actuator body includes a clevis to attach it on door arm and bosses on which the pneumatic assembly is secured. Three vent holes in the body allow shutting the door after an emergency opening. The piston includes a ball end for attachment to door arm. The two chambers containing the hydraulic damping fluid are installed on main piston.

(1) 作动器主体与活塞

作动器主体包含用于连接门臂的U形夹，以及固定气动组件的凸台。主体上的三个排气孔可在紧急开启后实现舱门关闭。活塞末端设有球形接头用于连接门臂。主活塞上安装有两个储存液压阻尼液的腔室。

(2) Damping system

Damping systems installed on main piston, slow down it on stroke end on opening or shutting of the door. The force of the impact on the fuselage is by this means, limited to an acceptable level. This damping action is produced by throttling of a hydraulic fluid. The damping in the door opening direction is a two stages damping action depending on the force of arrival of the hydraulic fluid in the damping chamber.

(2) 阻尼系统

安装于主活塞的阻尼系统可在开门或关门行程末端减缓运动速度，从而将机身承受的冲击力限制在可接受范围内。该阻尼作用通过液压流体节流实现。开门方向的阻尼采用两级阻尼机制，其作用强度取决于液压流体进入阻尼腔时的冲击力。

(3) Percussion Mechanism and Accumulator Assembly

This unit allows opening the door when the manual opening is made impossible by a too high antagonistic force. When the door is opened in emergency condition by the flight personnel using the door opening handle a hammer comes to strike a puncher which perforates a diaphragm. This allows the nitrogen contained in a bottle to enter the rear chamber of the actuator which is then energized and opens the door. The pneumatic assembly also includes a valve to fill the bottle and a pressure gauge to ensure the nitrogen pressure remains correct. A safety device permits to set the actuator in armed or disarmed position with the red flagged pin. A shear pin prevents the inadvertent percussion due to vibrations. It must be replaced after each emergency opening.

(3) 冲击机构与蓄能器组件

该装置可在手动开启因对抗力过高而无法实现时自动开启舱门。当机组人员通过门柄实施紧急开启时，锤头撞击冲孔器穿透膜片，使储瓶内氮气进入作动器后腔，驱动作动器开启舱门。该气动组件还包含充气瓶用阀门及压力表，确保氮气压力维持在正确值。安全装置通过有红色带子的销子实现作动器的待命/解除状态切换。剪切销可防止因振动引发的意外撞击，每次紧急开启后必须更换该部件。