航空工程英语基础（中英文对照）(3)

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

EXERCISE
A. Find out the explanations of the following words in your “English-chinese
technical dictionary”.
1. pneumatic  P1-114   P1-115 
2. engine bleed  P1-52 
3. cowl  P1-37 
4. thermal anti- icing  P1-152 
5. isolation valve  P1-84 
6. phase of flight [ P1-112 ]
7. pressure [ P1-117 ]
B. Read the text loudly and clearly.
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LESSON 3
AIR CONDITIONING
VOCABULARY
1. air conditioning    kndini  空气调节
2. environment  invairnmnt  n. 环境,场合
3. crew  kru:  n. 机组
4. heat  hi:t  v. 加热, n. 热
5. cool  ku:t  vi. 冷却n. 凉(爽)
6. pressurization  preraizein  n. 增压
7. bled  bled  是bleed  bli:d  的过去分词,引出,放出
8. manifold  mæniuld  n. 总管(道)
9. separate  sepreit  a. 分离(开)的,不相连的
10. independent  indi pendnt  a. 独立的
11. cooling pack  ku:li   pæk  冷却组件
12. regulate  regjuleit  vt. 调节,管理,控制
13. warm  w :m  a. v. n. 暖,热
14. reduce  ridju:s  v. 减少(小)
15. desire  dizai  v. n. 期望,要求
16. air cycle machine     saikl   m i:n  涡轮冷却器
17. integral  intigrl  a. 整的, 构成整体所必要的
18. consist of …… 包括……; 由……组成
19. common  k mn  a. 共有的; 共同的,共用的
20. shaft  a:ft  n. 轴
21. leave  li:v  v. 离开; 脱离
22. expand  ikspænd  v. 膨胀;扩展
23. expansion  ikspænn  n. 膨胀; 扩展
24. drop  dr p  v. 下降
25. sub-zero  sbziru  a. 零下(的),负的
26. distribution  distribju: n  n. 分配;分布
27. in addition  in din  另外还有;此外
28. trim air line 配平空气管道
29. mix  miks  v. n. 混合
30. chamber  teimb  n. 室; 盒;容器
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31. add  ed  v. ; n. 加(上) ;增加
32. overhead  uvhed  a. 在头上的; 在上面的;高架的
33. riser  rais  n. 立式管道;竖管
34. collector  klekt  n. 收集器;集气管
35. shroud  raud  n. 防护罩
36. filter  filt  n. 过滤器;滤波器
37. discharge  dista:d  n. 排出口
38. redistribution  ri:distribjun  n. 再分配; 重新分布
TEXT
1 The air conditioning system provides a conditioned air environment for the
passengers and crew, heats the cargo compartment, cools the electronic equipment,
and supplies air for the pressurization system.
Fig 3-1 Air conditioning system
2 Air is bled from the pneumatic manifold and conditioned by 2 separate and
independent cooling packs. Air flow into the packs is regulated by the pack valves.
3 Air from the pneumatic manifold is too warm and must be cooled .The purpose
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of the 2 packs is to reduce engine bleed air temperature to the desired temperature.
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 .
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
　
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