曝光台 注意防骗
网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
被引入。空气流进组件中通过组件活门调节。
(3) Air from the pneumatic manifold is too warm and must be cooled. The
pupose of 2 packs is to reduce engine bleed air temperature to the desired
temperature.
从增压主管道中来的空气太热，需要降温。两个组件的作用就是将发
动机引气温度降低到需要的温度。
(4) An air cycle machine is an integral unit of each cooling pack. The air
cycle machine consists of a turbine wheel and a compressor wheel
mounted on a common shaft. Air flowing through the air cycle machine
drives the turbine, the turbine drives the compressor section. As the air
leaves the turbine it expands greatly. This expansion can cause the
temperature of the air to drop to sub-zero levels.
涡轮冷却器是构成每个冷却组件所必需的。它包括一个涡轮和一个压
气机，安装在共同的轴上。气流通过涡轮冷却器驱动涡轮，涡轮驱动
压气机部分。当空气离开涡轮后急剧膨胀。这种膨胀能够导致空气温
度降到零度以下的程度。
(5) In figure 3-1, we can see that the conditioned air from the right pack flows
into the main distribution manifold, the conditioned air from the left pack
flows into the main distribution manifold and into the flight compartment.
In addition, a trim air line from the left mix chamber adds hot air to the
flight compartment duct. The main distribution manifold supplies the
passenger compartment overhead distribution system through tow sidewall
risers.
在图3-1 中，我们可以看出，调节空气从右组件流向主分配管道，还
有调节空气从左组件流向主分配管道和进入驾驶舱。另外，从左混合
舱出来的配平空气管道增加热空气给驾驶舱管道。主分配管道通过两
个侧壁竖管供气给客舱顶部分配系统。
(6) A 3-phase fan draws air from the collector shroud through filters and
discharges into the main distribution manifold for redistribution.
一个三相风扇从收集器防护罩穿过过；滤器和排出口进入主分配管
道，用以再分配。
LESSON 4 PRESSURIZATION INTRODUCTION 增压系统简介
一、单词
组件Pack 控制Control \座舱高度Cabin altitude
外流阀Outflow valve 保持Maintain 尽可能的… As as possible
目的地destination 安全的Safe 舒适的Comfortable
曲线Curve 对时间的Against time 起飞Takeoff
巡航Curise 虚线Dotted line 实线Solid line
爬升Ascend 下降Descent 近Near
环境ambient 减小decrease 变化率rate
确定、决定Determine 大气Atmosphere 例子Example
磅/英寸Psi=pound per
square inch
参照… By referring 图表Chart
描绘Depict 与…的关系曲线versus 称之为… Is referred to as
制度Sytstem 水银mercury 毫巴Millibar
相等的identical 施加exert 排出exhaust
向机舱外outbroud
二、TEXT
(1) the air conditioning packs supply conditioned air into pressurization
system. the pressurization system controls cabin altitude by regulating air
flow from the fuselage, through the outflow valve. The pressurization
system maintains cabin altitude as close to sea level as possible or at an
altitude equal to the altitude of the flight destination, so the pressurization
system provides a safe comfortable cabin altitude for the crew and
passenger at all airplane altitude.
空调组件为增压系统提供调节空气。增压系统通过调节机身气流控制
客舱高度，通过外流阀，增压系统保持客舱高度尽可能的接近海平面
或等于飞行目的地高度，这样增压系统可为机组和旅客在整个飞行过
程中提供一个安全舒适的客舱高度。
(2) Figure 4-2 shows a curve of airplane and cabin altitude against time from
take off through cruise to landing . airplane altitude is shown in dotted line.
Cabin altitude is shown in solid line. The airplane starts its flight at an
airport altitude near sea level, ascends, cruises, and descends to a landing
airport near sea level.
图4-2 显示为飞机和坐舱高度在起飞、巡航及着陆阶段的时间曲线。
飞机高度显示为虚线，坐舱高度显示为实线。飞机以接近海平面的机
场高度开始飞行、爬升、巡航、下降和接近海平面的机场着陆。
(3) Cabin altitude starts at the take off altitude. As the airplane climb, the
ambient pressure decreases; the higher the altitude, the lower the pressure.
The altitude inside the airplane (cabin altitude)also climbs but at a lower
rate than the airplane. The pressurization system provides the pressure
differential between the cabin and ambient.
客趁高度开始于起飞高度。当飞机爬升时，环境压力减小，高度越高，
压力越低。飞机内部高度（坐舱高度）也以一个低于飞机的速率爬升。
增压系统提供客舱与外界环境之间的压力差。
(4) The airplane altitude above sea level is determined by measuring the
pressure of the ambient atmosphere. For example, see figure4-3, at 30,000
feet above sea level the ambient pressure would be 4.36 psi. the cabin
altitude can be measured by adding the ambient pressure to the 7.80 psid
maintained in side the airplane by the pressurization system: ambient
pressure 4.36 psi at 30,000 ft.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
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航空工程英语基础（中英文对照）(81)
