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sends it to the IRS.
[6] The DAA perform other tasks not related with the IRS. They convert VOR/ILS
navigation system signals from analog format into ARINC 429 format and send the
data to the electronic flight instrument system (EFIS) for display to the flight crew.
The DAA convert analog information from the fuel summation unit into data
information and send the information on an ARINC 429 data bus to the FMCS. The
DAA also converts the low speed N1 from ARINC 429 format into analog format
and sends the N1 information to the engine indicator. The DAA also converts DME
distance from ARINC 568 to ARINC 429 and sends it to the flight control computer
(FCC) and the electronic flight instrument system (EFIS ).
Fig 20 - 1 Navigation system
EXERCISE
A. Find out the explanations of the following words in your “English-Chinese
technical dictionary”
1. Automatic Direction Finder (ADF) [ p1- 14 ]
2. Very High Frequeney Omnirange
(VHF Omni-directional Range )
3. Instrument Landing System (ILS) [ p1- 81 ]
4. Slant range [ p1- 137 ]
5. Air Traffic Control (ATC) [ p1- 5 ]
6. Inertial Reference System (IRS) [ p1- 73 ]
7. heading [ p1- 73 ]
8. Electronic Flight Instrument System (EFIS) [ p1- 51 ]
9. Low Range Radio Altimeter (LRRA) [ p1- 96 ]
10. absolute altitude [ p1- 1 ]
11. Flight Management Computer (FMC) [ p1- 63 ]
12. great circle route [ p1- 71 ]
13. climb [ p1- 30 ]
14. flight profile [ p1- 63 ]
15. descent [ p1- 42 ]
16. Line Replaceable Unit [ p1- 92 ]
17. printed circuit card [ p1- 117 ]
18. digital -to -analog [ p1- 43 ]
19. memory [ p1- 100 ]
20. Aeronautical Radio Incorporated (ARINC) [ p1- 3 ]
21. data bus [ p1- 39 ]
22. build-in test Equipment (BITE) [ p1- 23 ]
B. Translate the following sentences into chinese.
1. The navigation systems compute and display the airplanes position and
movement over the earths surface.
2. Previously, airplane were navigated by flying from station to station along
the route from the airplanes origin to destination, the pilot used DME, VOR
and ADF to fly to each station.
3. The VOR/ILS system provide displays of relative bearing and magnetic
bearing to a selected VOR station and provide deviation from a preselected
course.
4. The flight management computer continuously calculates the optimum flight
path and engine thrust to save time and fuel.
5. The EFSAU (Integrated Flight Systems Accessory Unit ) is a line replaceable
unit (LRU) located in the electronic equipment compartment.
(VOR) [ p1- 166 ]
LESSON 21
ELECTRONIC FLIGHT INSTRUMENT SYSTEM
VOCABULARY
1. EFIS =Electronic Flight Instrument System
[ ilek’tr nik ] [instrumnt ] 電子飛行儀表系統(tǒng)
2. color [kl ] n. 顏色; 彩色
3. pitch [ pit ] n. ; v. 俯仰
4. roll [ roull ] n. ; v. 橫滾
5. weather [weð ] n. 氣象; 天氣
6. radio altitude [ æltitju:d ] 無線電高度
7. decision height [ disi n ] [ hait ] 決斷高度
8. include [ inklu:d ] vt. 包含; 包括
9. EADI == Electronic Attitude Director Indicator
[ætitju:d ] 電子姿態(tài)指引儀
10. EHSI == Electronic Horizontal Situation Indicator
[sitjuein] 電子水平狀態(tài)指示器
11. symbol generator [simbl d enreit 符號發(fā)生器
12. transfer switch [trænsf:][swit] 轉(zhuǎn)換開關(guān)
13. LCD == Liquid Crystal Display 液晶顯示器
[likwid][kristl][displei]
14. reset [ ri:set ] n ; vt. 復(fù)位
15. TCAS == Traffic alert and Collision Avoidance System
[træfik][l:t] [kli n][  idns] 空中交通報警和防撞系統(tǒng)
16. TFC == Traffic
17. concentric [ k nsentrik ] a. ; n. 同心的; 同軸的
18. overall [ ouvr :l ] a. 全部的; 總的
19. range [ reind ] n. 作用距離; (有效)范圍
20. enable [ ineibl ] vt. 能夠(做); 可以(做); 起(啟)動
21. supplement [ spliment ] vt. 補(bǔ)充
22. VOR == Very High Frequency Omni-directional Range 甚高頻全向信
標(biāo)
23. ADF == Automatic Direction Finder 自動定(測)向儀
24. APRT == Airport 機(jī)場
25. RTE == route 航路
26. WPT == waypoint 航路點
27. flight plan [flait ] [ plæn ] 飛行計劃
28. mach [ ma:k ] n. 馬赫
29. airspeed [ spi:d ] n. 空速
30. ILS == Instrument Landing System 儀表著陸系統(tǒng)
31. radio altimeter [ æltimit ] 無線電高度表
32. autothrottle [ :tour tl ] n. 自動油門
　
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