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2 The flight crew oxygen system consists of an oxygen cylinder, valves, indicating
components, distribution tubing and oxygen mask/regulator. The crew oxygen
system components are located in the forward cargo compartment and in the flight
compartment .
Fig. 6-1 crew oxygen system
3 Oxygen flows through the pressure reducing regulator and shut off valve to the
masks. Quantity (pressure)indication is provided by a gage in the flight
compartment. In the event of an overpressure, the cylinder is vented to ambient
through the overboard discharge. The cylinder is serviced after removal from
the aircraft.
4 The passenger oxygen system provides an emergency oxygen supply to the
passengers and attendants. This system consists of passenger service units, control
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and indication. The service units contain the mask box, door latch release actuator,
latching mechanism, chemical oxygen generator and oxygen mask.
5 The passenger oxygen system can be activated automatically by high cabin
altitude (low cabin pressure) or manually from the flight compartment.
EXERCISE
A. Find out the explanations of the following words in your “English-Chinese
technical dictionary”
1. diluter demand regulator  P1-44 
2. gage  P1-66 
3. vent  P1-164 
4. latch  P-90 
5. actuator  P1-2 
B. Read the text loudly and clearly.
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LESSON 7
ICE AND RAIN PROTECTION
VOCABULARY
1. rain  rein  n. 雨
2. protect  pr tekt  v. 保護;防護
3. aid  eid  v. 幫助;支援
4. is provided for … 為……而提供(設置)
5. wiper  waip  n. 雨刷
6. repellent  ri pelnt  n. 防雨劑a. 排斥的;防水的
7. vane  vein  n. 葉片
8. toilet  t ilit  n. 衛生間;浴室
9. drain  drein  v. 排放(水;氣;油)n. 排水裝置
10. vision  vi n  n. 視線
11. pitot static  pitou   stætik  皮托靜壓
12. probe  prub  n. 探頭
13. alpha vane  æl   vein  迎角葉片
14. mast  ma:st  桿;支柱(狀)管
15. buildup  bildp  n. 聚集;堆積
16. impact  impækt  n.; vt. 碰撞;沖擊
17. strength  stre  n. 強度
18. fog  f g  n. 霧
19. conductive  kndktiv  a. 導電的
20. coating  kuti  n.涂層;涂料
21. expose  iks puz  vt. 暴露
22. airstream   stri:m  n. 氣流
23. formation  f : mein  n. 形成;產生
24. freeze  fri:z  v. 結冰; 凍結
25. cause  k :z  n. 原因
26. faulty  f :lti  a. 出故障的;有錯誤的
27. loss  l s  n. 損失;減少
28. sink  sik  n. (洗滌)槽(盆)
29. embed  imbed  v. 嵌入;鑲入
30. gasket  gæskit  n. 墊圈;密封墊圈
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31. fitting  fiti n. 裝置;設備
32. are integrated with … 與…結合在一起
TEXT
1 The ice and rain protection system protects the airplane and aids the flight crew
when operating under ice and rain conditions. Ice and rain protection is provided
for :
1) Wing leading edge slats outboard of each engine .
2) Flight compartment windows (heat, wiper, rain repellent).
3) Pitot static and temperature probes .
4) alpha vanes .
5) toilet drains.
Fig 7-1 ice and rain protection system
2 Wing leading slats use hot air from the pneumatic system. Flight compartment
windows are electrically heated. The wipers and rain repellent are used for
providing clear vision. The pitot static probes, alpha vanes, drain masts, and toilet
drains use electric heaters.
3 The wing anti-ice system prevents ice buildup on the wing leading edge slats,
this system consists of air supply ducts, valves, terminal switches, controls and
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indications.
4 The window heat system improves the impact strength of the flight compartment
windows and prevents fog and ice-buildup, this system consists of conductive
coating in the window structure, heat control units, controls and indications.
　
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