曝光台 注意防骗
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5 The pitot static probes, temperature probe and alpha vanes provide air data
information to the various using system, they are located on the left and right
sides of the forward fuselage. Since all the probes and vanes are exposed to the
airstream, internal heating is provided to prevent ice formation. Freezing could
cause faulty inputs or possible loss of all data.
6 The drain anti-icing system prevents ice buildup on the drains from the toilets
and lavatory sinks. The aft toilet drain heater is embedded in a gasket between the
drain tube and the drain outlet fitting.The lavatory sink drain heater are integrated
with the drain mast.The power supply for the toilet drain heaters is 115 volts ac and
for the lavatory sink drain is 115 volts ac or 28 volts ac.
EXERCISE
A. Find out the explanations of the following words in your "English-Chinese
technical dictionary".
1. drain valve P1-48
2. pitot tube P1-114
3. static pressure P1-143
4. alpha vane P1-7
5. airfoil P1-6
6. gasket P1-67
7. angle of attack [ P1-10 ]
8. leading edge [ P1-81 ]
9. slat [ P1-137 ]
B. Read the text loudly and clearly.
24
LESSON 8
THE POTABLE WATER SYSTEM
VOCABULARY
1. potable water pUtbl w :t 饮用水
2. waste weist n. 废料v. 浪费
3. is composed of …… kmpuzd 由……组成
4. tank tk n. 油箱;水箱
5. quantity kw ntiti n. 数量; 量
6. construct knstrkt vt. 建造;制做
7. bracket brækit n. 支架;托架
8. U. S.gallon gæln = 3.785 公升
imperial gallon = 4.546 公升
9. cylindrical silindrikl a. 园筒形的
10. blanket blækit n. 覆盖层
11. fill line 充注管道
12. overflow line 外泄管道
13. quantity transmitter 水量传感器
14. capacity kpæsiti n. 工作容量;容积
15. reed ri:d n. 簧片
16. diode daiud n. 二极管
17. float flut n. 浮子;浮标
18. magnet mægnit n. 磁铁
19. surround sraund vt. 围绕;包围
20. label leibl vt. 标记为;标明
21. associated suieitid a. 关联的;联结的
22. corresponding k risp ndi a. 相应的;对应的
23. emptiness emptinis n. 空
25
TEXT
1 The potable water system supplies potable water to the galleys and lavatories.
The waste system is for storing and removing waste from the toilets. The water and
waste system is composed of independent but related systems.
2 The potable water system consists of a water tank, quantity indication,
pressurization components,and distribution tubing.The water tank and
pressurization components are located aft of the aft cargo compartment. The
quantity indication is in the aft section of the passenger cabin.
Fig 8-1 potable water system
3 The water tank stores potable water for use by the passengers and crew. The
tank is constructed of fiberglass and attached by struts and mounting brackets to the
airplane structure. The 30 U.S. gallon tank is cylindrical. It is protected from
freezing by a 3-pieces fiberglass blanket. On the upper section of the tank are
connections for the air pressure line, fill line, overflow line, supply line, and a
quantity transmitter. The fill and overflow valve is used to fill the tank to the
capacity determined by a standpipe, this valve is operated by a handle. A drain
valve is located on the bottom of the tank .
26
Fig 8-2 water tank
4The quantity indication shows the amount of water in the tank. The quantity
transmitter consists of 10 reed switches and 3 diodes inside a tube. A float with 3
magnets surrounds the tube. In addition, the indicator consists of 5 lights labelled E,
1/4, 1/2, 3/4 and F, and a push button. The amount of water in the tank determines
the position of the float. The magnets on the float close the associated reed switches.
Using the push button on the quantity indicator, allows the corresponding quantity
lights to illuminate. If the tank is emptiness, the E light is illuminated, if the tank is
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航空工程英语基础（中英文对照）(8)
