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Pressuree diffeential 7.80psid
12.16psi
by referring to the chart depicting ambient pressure versus altitude, if the
ambient pressure is 12.16psi, the cabin altitude would be 5150 ft (see
sigure 4-3).
飛機高度可通過測量環(huán)境大氣的壓力來測得。例如：圖4-3，在高于
海平面3 萬英尺的環(huán)境壓力為4.36PSI。客艙高度可通過環(huán)境壓力加
7.8PSID 來測得，7.8PSID 由增壓系統(tǒng)保持：
環(huán)境壓力：4.36PSI 30000FT
壓力差；7.8PSID
坐艙壓力：4.36+7.8=12.16PSID
參照圖表描述環(huán)境壓力高度曲線，如果環(huán)境壓力是12.16PSID，客艙
高度將是5150 英尺（圖4-3）
(5) the cabin pressure is referred to as “psid” and indicates the differential
pressure, in pounds per square inch , between inside and outside of the
airplane. There are many systems for measuring pressure and “psi” is only
one .airplane systems measure pressure in inches of mercury and millibars;
these indications are identical to 14.7psi as a measurement of the pressure
exerted by the atmosphere at sea level.
客艙壓力被稱為“PSID”并用“磅/英尺”指出壓力差，在飛機內(nèi)外，
有許多系統(tǒng)可測量壓力，“PSI”只是其中之一。飛機系統(tǒng)用英寸水
銀或毫巴來測量壓力；這些指示等同于受到海平面大氣壓力14.7PSI。
(6) The pressure control systems provide cabin differential pressure by
controlling the outflow of air from the faselage. The pressure control
system consists of an aft outflow valve, forward outflow valve, pressure
controller, control panel, pressure sensing inputs, and monitoring
indicators.
壓力控制系統(tǒng)通過控制機外氣流來提供客艙壓力差。壓力控制系統(tǒng)包
括一個外流閥、前外流閥、壓力控制器、控制面板、壓力傳感器和監(jiān)
視器。
(7) The aft outflow valve allowing cabin air to exhaust overboard to maintain
cabin pressure. The forward outflow valve receives a control signal from
the aft outflow valve . when the aft outflow valve is closed, the forward
outflow valve receives a signal to drive full closed.
后外流閥允許客艙空氣排出到機外以保持客艙壓力。前外流閥接收一
個從后外流閥來的控制信號。當后外流閥被關(guān)閉時，前外流閥接收又
個信號驅(qū)使完全關(guān)閉。
LESSON 5 FIRE DETECTION 火警探測
一、單詞
火警探測Fire detection 在…周圍Around 組件Pack
監(jiān)控Monitor 存在Exist 泄漏Leak
部件Component 警告Alarm 報警器horn
過熱Overheat 鈴聲Bell 規(guī)定specify
發(fā)生Occur 聽覺Aural 在…之下beneath
面板Panel 器件device 與…相對應(yīng)Respond to
機翼Wing 滅火器Extinguish 盆basin
廁所Lavatory 瓶Bottle 擦手紙斜槽Tower chute
可選的optional 角落Corner
特征feature 輪子wheel
可用的Available 放出discharge
位置Location 完成Accomplish
元件element 天花板Ceiling
二、TEXT
(1) the fire detection systems monitor airplane components for overheat, fire
or smoke condition. Engine and APU fire and overheat indication occurs
on the P8 and P7 panels.Wing and body duct overheat warning occurs on
the P5 and P7 panels. Lavatory smoke detection indication is an optional
feature that is available. Indication can occur at the lavatory location and
or on the P5 panel.
火警探測系統(tǒng)監(jiān)控飛機組件的過熱、失火或煙霧等情況。發(fā)動機和
APU 過熱和失火指示出現(xiàn)在P8 或P7 板上。機翼和機身管道過熱警
告出現(xiàn)在P5 或P7 板上。廁所煙霧探測指示是一個可選裝配件。指示
能夠出現(xiàn)在廁所位置或P5 板上。
(2) Engine fire and overheat detection is provided by detector elements
located around the engine. The engine and APU fire detection accessory
unit M279, located in the E/E bay determines if a fire or overheat
condition exists.When detected indications occur in the flight deck an
alarm bell is provided by the aural warning devices unit M315 for a fire
condition. The two engine fire extinguisher bottles are located on the
upper left aft corner of the main wheel well and are discharged from the
flight deck.
發(fā)動機失火和過熱信號探測由安裝在發(fā)動機周圍的探測元件提供。發(fā)
動機和APU 火警探測組件M279，安裝在電子設(shè)備艙，用于判斷是否有
失火或過熱情況發(fā)生。當在飛機蒙皮探測到火警信號時，音響警告設(shè)
備M315 將給出一個警告鈴聲。兩臺發(fā)動機滅火瓶安裝在主輪艙左下
方后角處，并從□□處釋放。
(3) The APU detectors sense fire conditions only. Monitoring of the sensors is
accomplished by the M279. indications occur on the P28 panel in the
wheel well and also in the flight deck. The APU fire bottle is located
behind the aft pressure bulkhead and is discharged either from the flight
deck or P28 panel.
APU 探測器只感應(yīng)火警信號。傳感器的監(jiān)控由M279 完成。指示出現(xiàn)在
P28 板在主輪艙和FLIGHT DECK。APU 滅火瓶后壓力隔板上，并通過
P28 板或FLIGH DECK 釋放。
(4)Wheel well fire detection is provided by detector elements mounted on the
wheel well ceiling. The detectors provide input to the M237 module
located in the E/E bay. Indications occur on the P7 and P8 panels and an
　
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