2018年08月30日周四
Hydraulic System
78
Daily English Of Dispatcher
Hydraulic System
Hydraulic System A
01
每套液壓系統(tǒng)都有一個位于主輪艙區(qū)域的液壓儲油箱,A系統(tǒng)和B系統(tǒng)獨立運行,由引氣增壓。一液壓維護管路將液壓系統(tǒng)B和備用系統(tǒng)連接。
Each hydraulic system has a fluid reservoir located in the main wheel well area. System A and B reservoirs are pressurized by bleed air. The standby system reservoir is connected to the system B reservoir for pressurization and servicing.
A和B兩個液壓系統(tǒng)都具有一個發(fā)動機驅(qū)動泵和一個交流電動馬達驅(qū)動泵。
Both A and B hydraulic systems have an engine–driven pump and an AC electric motor–driven pump.
A系統(tǒng)的發(fā)動機驅(qū)動泵由1號發(fā)動機提供動力，而B系統(tǒng)的發(fā)動機驅(qū)動泵則由2號發(fā)動機提供動力。
The system A engine–driven pump is powered by the No.1
engine and the system B engine–driven pump is powered by the No. 2 engine.
一臺發(fā)動機驅(qū)動的液壓泵所提供的液壓油量約是相應電動馬達驅(qū)動泵的6倍。
An engine–driven hydraulic pump supplies approximately 6 times the fluid volume of the related electric motor–driven hydraulic pump.
System A Hydraulic Leak
如果發(fā)動機驅(qū)動泵或相關的管路發(fā)生滲漏現(xiàn)象，液壓油箱內(nèi)的一個豎管可防止系統(tǒng)內(nèi)的液壓油全部漏光。
If a leak develops in the engine–driven pump or its related lines, a standpipe in the reservoir prevents a total system fluid loss.
當液壓油面達到豎管的頂部位置時，液壓油箱的指示約為全滿位的20％。A系統(tǒng)的液壓壓力是由電動馬達驅(qū)動泵來保持的。
With fluid level at the top of the standpipe, the reservoir quantity displayed indicates approximately 20% full.
System A hydraulic pressure is maintained by the electric motor–driven pump.
如果在電動馬達驅(qū)動泵或其相應的管路，或兩臺發(fā)動機和電動馬達驅(qū)動泵共用部件中發(fā)生滲漏，則液壓油箱內(nèi)油量將穩(wěn)定地減少到零，并且全部系統(tǒng)失去壓力。
If a leak develops in the electric motor–driven pump or its related lines, or components common to both the engineand electric motor–driven pumps, the quantity in the reservoir steadily decreases to zero and all system pressure is lost.
Hydraulic System B
02
B系統(tǒng)泄露
如果任一泵、管路或B系統(tǒng)組件出現(xiàn)漏油，液壓油量下降直至指示為零，且B系統(tǒng)壓力喪失。
If a leak develops in either pump, line or component of system B, the quantity decreases until it indicates approximately zero and systemB pressure is lost.
B系統(tǒng)液壓油箱有一豎管，向發(fā)動機驅(qū)動泵和電動馬達驅(qū)動泵提供液壓油。
The system B reservoir has one standpipe which supplies fluid to both the engine–driven pump and the electric motor–driven pump.
但是，當液壓油面在豎管的頂端時，B系統(tǒng)油箱中的剩余液壓油量足以滿足動力轉(zhuǎn)換組件的工作。
However, with fluid level at the top of the standpipe, fluid remaining in the system B reservoir is sufficient for power transfer unit operation.
液壓B系統(tǒng)內(nèi)的滲漏不會影響到備用液壓系統(tǒng)的工作。
A leak in system B does not affect the operation of the standby hydraulic system.
動力轉(zhuǎn)換組件（PTU）的作用是當B系統(tǒng)發(fā)動機驅(qū)動的液壓泵內(nèi)油量泄漏后，為自動縫翼和前緣襟翼和縫翼以正常速率工作提供所需的額外液壓油量。
The purpose of the PTU is to supply the additional volume of hydraulic fluid needed to operate the autoslats and leading edge flaps and slats at the normal rate when system B engine–driven hydraulic pump volume is lost.
PTU使用A系統(tǒng)的壓力帶動一個液壓馬達驅(qū)動泵，這樣可以給B系統(tǒng)的液壓油增壓。
The PTU uses system A pressure to power a hydraulic motor–driven pump, which pressurizes system B hydraulic fluid.
起落架轉(zhuǎn)換組件的作用是在A系統(tǒng)發(fā)動機驅(qū)動泵液壓油泄漏后，為起落架以正常速率收上提供所需的液壓油量。
The purpose of the landing gear transfer unit is to supply the volume of hydraulic fluid needed to raise the landing gearat the normal rate when system A engine–driven pump volume is lost.
B系統(tǒng)發(fā)動機驅(qū)動泵為操作起落架轉(zhuǎn)換組件提供所需的液壓油量。
The system B engine–driven pump supplies the volume of hydraulic fluid needed to operate the landing gear transfer unit.
Standby
03
如果A和/或B系統(tǒng)無壓力，備用液壓系統(tǒng)可作為后備。備用系統(tǒng)可人工或自動起動，并使用一個電動馬達驅(qū)動泵向下列設備供壓：
· 反推裝置
· 方向舵
· 前緣襟翼和縫翼（僅放出）
· 備用偏航阻尼器。
The standby hydraulic system is provided as a backup if system A and/or B
pressure is lost. The standby system canbe activated manually or automatically
and uses a single electric motor–driven pump to power:
· thrust reversers
· rudder
· leading edge flaps and slats (extend only)
· standby yaw damper.
一旦A、B停止運轉(zhuǎn)，備用系統(tǒng)能向方向舵、前緣裝置、自動縫翼和反推提供液壓。
When system A and B stop operating, the backup system can provide hydraulic pressure to the rudder, the leading edge device, the autoslats and the reverser.
副翼,升降舵和方向舵，由雙重液壓源提供動力（液壓A和B）。
Ailerons, elevator and rudder, powered by double hydraulic source (hydraulic A and B).
任一液壓系統(tǒng)都能操縱所有的主飛行操縱面。液壓系統(tǒng)A和B失效時，副翼,升降舵可以人工操縱；方向舵可由備用液壓系統(tǒng)操縱。
Both A and B hydraulic system can operate all main flight control surfaces.When hydraulic systems A and B fail, ailerons and lifters can be operated manually;The rudder can be operated by an alternate hydraulic system.
To Be Continued.......
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