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of the flight control, landing gear, and thrust reverser systems. System B
hydraulic power operates the following system:
Main wheel brakes
Right thrust reverser
Ailerons – power control unit and autopilot actuator.
Elevators – power control unit and autopilot actuator.
Elevator feel
Rudder
Outboard flight spoiler 2 and 7
Trailing edge flaps
Leading edge flaps and slats
Alternate landing gear retraction
Alternate nose wheel steering
液壓B 系統提供小于3000PSI 的壓力給飛行控制、起落架及反推裝置
系統。液壓B 系統為下列系統提供壓力：
主輪剎車
右反推裝置
副翼—動力控制組件及自動駕駛作動筒
升降舵—動力控制組件及自動駕駛作動筒
升降舵FEEL
方向舵
外側飛行擾流板2#和7#
后緣襟翼
前緣襟翼和縫翼
備用起落架收起
備用前輪轉彎
(6) System Bhydraulic pressoure is provided by two hydraulic pumps, an
EDP(engine driven pump) and an EMDP(electric motor driven pump).the
pumps are supplied with fluid from a reservoir pressurized with pneumatic
air from the ECS(environmental control system). Output of the pumps is
routed to a pressure module and from there to the using systems. Return
fluid from the using system is routed through a return filter module then to
the reservoir. Drain fluid from both pumps is routed through a heat
exchanger before going to the reservoir.
B 系統壓力油兩個液壓泵、一個發動機驅動泵和一個電動馬達泵來提
供。泵內裝有從油箱來的液體，用環境控制系統的增壓空氣產生壓力。
泵內輸出的壓力被送往壓力組件并從這兒傳給用戶系統。從用戶系統返
回的流體通過一個回油濾組件被送往油箱。泵中排出的流體通過一個熱
交換器后被送往油箱。
(7) The standby system components are located in the main gear wheel
well,on the keel beam and the aft bulkhead. The standby pump is operated
when required to power the rudder, thrust reversers, or to extend the
leading edge devices. The pump can be turned on by either of three
guarded switches on the forward overhead panel(P5). In addition, the
pump automatically switches on and provides standby pressure to the
rudder whenever hydraulic systemA or Bis lost, the flaps are not up, the
airplane is either in the air or on the ground with wheel speed above 60
knots, and at least one flight control switch, systemA or B, is ON.
備用系統組件位于主輪艙，壓力隔板后方龍骨上方。當需要操作方向
舵、反推裝置或打開前緣設備時，備用泵開始工作。這個泵能夠被頭
頂（P5）面板前方的三個帶保護罩的開關中的任一個打開。另外，無
論A 系統或B 系統哪一個失效時，這個泵將自動工作并為方向舵提
供備用壓力，襟翼不會打開，飛機無論在空中或地面輪速都將大于60
節，并且至少有一個飛行控制開關，A 系統或B 系統是打開的。
(8)When the standby pump is turned on, pressurized fluid is delivered to two
motor-operated shutoff valves on the standby pressure module and to two
thrust reverser shuttlee valves. The motor operated shutoff valves which
control pressure to the leading edge devices and to the standby rudder
actrator are individually controlled by switches on the forward overhead
panel. The standby rudder shutoff valve is also opened when the standby
hydraulic pump is automatically turned on.
當備用泵打開時，壓力被送往備用壓力組件的兩個馬達控制的截流閥
和兩個反推裝置截流閥上。馬達控制截流閥控制提供給前緣設備的壓
力并通過前頂置面板分別控制備用方向舵作動筒。當備用液壓泵自動
工作時，備用方向舵截流閥也同時打開。
LESSON 14 LANDING GEAR 起落架
一、單詞
主起落架Main gear 前起落架Nose gear 梁Spar
防滑的Antiskid 無效的Inoperative 自動剎車Autobrake
解除預位Disarm 使動作Actuate 借助于… By means of
減壓Depressurize 電磁線圈Solenoid 限制Restrict
相應的Respective 移動，變換Transit 一致Agree
充當Serve as 形態Configuration 在…情況下In case of
故障Malfunction 減震支柱Shock strut 緩沖Absorb
碰撞Inpact 沖撞Shock 振動Vibration
滑行Taxi 整流罩Fairing 機構Mechanism
保證Assure 阻力桿Drag brace 扭力臂Torsion link
圓筒Cylinder 軸頸銷釘Trunnion pin 穩定性Stability
牽引tow 環Lug 橫向螺栓crossbolt
牽引桿tow bar 碰撞Bump 注入Charge
氮氣Nitrogen 折迭Fold 環collar
轉彎力矩Turning moment 手輪Handwheel 腳蹬pedal
二、TEXT
(1) the landing gear consists of two main gear and a nose gear. The main gear
are located inboard of each engine, aft of the rear wing spar. The nose gear
is located below the aft bulkhead of the flight compartment. Braking is
provided by four brake assemblies, one mounted on each main gear wheel.
Landing gear control and indication components located in the flight
compartment include: the landing gear selector lever and indication lights,
manual extension handles, parking brake lever and indicator, nose gear
steering control wheel, antiskid control switch and inoperative indicator,
　
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