《航空专业英语》课件AMM阅读（32章）

1、深航机务培训中心民航维修专业英语32 LANDING GEAR制作人：郑得如审核人：孔玲红课件版权归深航机务培训中心所有PASSAGE Q：What does the L/G system consist of ? Whats its function? LANDING GEARExtension and Retraction System Wheels and Braking System NLG Steering System A NLG and Related Door Two MLGs and Related DoorsCONTENT Indication and Warning Sy

2、stemLANDING GEARExtension and Retraction System Wheels and Braking System NLG Steering System A NLG and Related Door Two MLGs and Related DoorsCONTENT Indication and Warning SystemWhats the component of the MLG? Where does the MLG retract to stow? How many doors are there in each MLG bay? Which can

3、be opened on the ground?QUESTIONSWhats the component of the MLG? oleo-pneumatic shock absorber side stay assembly lock stay doorsWhere does the MLG retract to stow? MLG bayHow many doors are there in each MLG bay? Which can be opened on the ground?Three. The main door.LANDING GEARExtension and Retra

4、ction System Wheels and Braking System NLG Steering System A NLG and Related Door Two MLGs and Related DoorsCONTENT Indication and Warning SystemWhats the component of the NLG? Where does the NLG retract to stow? How many doors are there in each NLG bay? Which can be opened on the ground?QUESTIONSWh

5、ats the component of the NLG? oleo-pneumatic shock absorber a two-piece drag strut assembly lock stay steering mechanism doorsWhere does the NLG retract to stow? It retracts forward into a bay in the fuselage.How many doors are there in each NLG bay? Which can be opened on the ground?Four. The forwa

6、rd doors.LANDING GEARExtension and Retraction System Wheels and Braking System NLG Steering System A NLG and Related Door Two MLGs and Related DoorsCONTENT Indication and Warning System Q: How many kinds are included in the extension and retraction system? （P161） Normal Extension and Retraction Free

7、 Fall Extension Which controls the normal extension and retraction? LUCIU. Which feed back the position data? Position sensors. Does the two LGCIU work at the same time? No.Normal Extension and Retraction Which controls is free fall extension system? Where does it connect to? Which extends the L/G?

8、Does it have hydraulic supply? Under what conditions will this system be reset?Free Fall ExtensionLANDING GEARExtension and Retraction System Wheels and Braking System NLG Steering System A NLG and Related Door Two MLGs and Related DoorsCONTENT Indication and Warning System Q： How many kinds of brak

9、ing system? Normal Braking System1Alternate Braking System32Parking Brake System33Function:Controlled by _Receives hydraulic pressure from _Includes _ protectionHas _ modes of operations automatic: selection of P/BSW manual: movement of brake pedalNormal Braking System1Alternate Braking SystemWith a

10、nti-skidSecondary electro-hydraulic braking system Automatically available Made only at the brake pedals through a low pressure hydraulic system Yellow hydraulic systemWithout anti-skid Secondary mode of operation of alternate braking systemMade only at the brake pedalUsually used when aircraft is t

11、owed with electrical powerYellow hydraulic system or accumulators Function：Receives power from _When this system is in use, all other brakingsystems are hydraulically isolated.Parking Brake System33Includes a temperature sensorSends data to BTMUShown on the wheel page of the ECAM SDBITE4Brake Temper

12、ature System5Decreases the temperature of the brakesUsually used on the groundIncludes a P/BSW and an fan in each MLG wheelHas hot light and on lightBrake Cooling System6TPIS7Includes a sensor and a TPISTPIS controls and monitors and sends dataLANDING GEARExtension and Retraction System Wheels and B

13、raking System NLG Steering System A NLG and Related Door Two MLGs and Related DoorsCONTENT Indication and Warning SystemControlled by _Function:Its function is achieved by _Uses hydraulic power from _ supply the steering input two handwheel transmitters supply the primary steering inputs rudder peda

14、ls and autopilot supply the secondary inputsLANDING GEARExtension and Retraction System Wheels and Braking System NLG Steering System A NLG and Related Door Two MLGs and Related DoorsCONTENT Indication and Warning SystemThe position and warning system has two parts:Indicating and warningHas proximit

15、y sensorsGives position data to LGCIUL/G BITEEach LGCIU contains BITESupplies data to CFDS The LGCIU makes the selections of the valve assembly to retract or extend the L/G and move the doors in a given sequence. in a given sequence 按照特定的顺序Useful Expressions The input signals from the brake pedals a

16、re proportional to the amount of pedal travel and supply braking independently to each MLG . be proportional to 与成比例 in proportion to深 航 维 修 你 来 传 承 主起落架和舱门系统部件主起落架减震支柱1.功能主起落架减震支柱吸收着陆力并将垂直载荷传递到飞机结构。2.基本工作原理油气式减震支柱主要利用气体的压缩变形吸收撞击动能，利用油液高速流过节流小孔的摩擦消耗能量。 主起落架和舱门系统部件主起落架减震支柱1.功能主起落架减震支柱吸收着陆力并将垂直载荷传递到飞机

17、结构。2.基本工作原理油气式减震支柱主要利用气体的压缩变形吸收撞击动能，利用油液高速流过节流小孔的摩擦消耗能量。主起落架阻力杆功能：在前和后方向上起稳定起落架的作用。主起落架侧撑杆功能：提供减震支柱的的横向（侧向）支撑。主起落架反作用连杆功能：将作用在起落架上的大部分侧向载荷传递到减震支柱上端。主起落架防扭臂功能：防止减震支柱内外筒之间的相对运动。 前起落架和舱门系统部件前起落架阻力杆1.功能与前起落架锁机构相连的阻力杆用于保持前起落架爱收上或放下锁定位置上。（其他结构部件功能与主起落架的相似） 起落架收放系统部件手柄组件1.位置起落架控制手柄在位于驾驶舱内的P2中央前面板上。2.功能起落架控制手柄组件通过起落架控制钢索操纵起落架选择活门，进行起落架的液压收、放操纵。选择活门1.位置选择活门位于主起落架轮舱的顶板上。2.功能起落架选择活门控制来自转换活门的液压压力流向主起落架和前起落架的收放管路。3.基本工作原理起落架控制手柄通过连接到选择活门控制杆上的控制钢索来控制选择活门的位置。转换活门1.位置起