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2. MEL
3. MM
4. BITE
D. Answer the questions 1～14 that are given for lesson 34 reading
material.
LESSON 35
AUTOTHROTTLE
VOCABULARY
1. A/T = autothrottle [ :tou'r tl ] n. 自動油門
2. workload [ 'w:kloud ] 工作負擔
3. design [ di'zain ] v. 設計;計劃
4. target airspeed 目標空速;預定空速
5. regim [ rei' i:m ] n. 范圍;領域
6. DFCS = Digital Flight Control System
數字飛行操作(控制)系統
7. take place [ teik ][ pleis ] 發生; 出現
8. several [ 'sevrl ] a. ; n. 幾個; 若干
9. over [ 'ouv ] prep. 遍及; 自始至終;在…范圍內
10. flight profile 飛行剖面
11. takeoff roll 起飛滑跑
12. maintain [ men'tein ] vt. 維護;保持
13. aft stop 后止動裝置(器)
14. LVL CHG = level change 高度層變化
15. flare [ fl ] n.; v. 改平;拉平
16. retart [ ri'ta:d ] vt. ;n. 放慢;拉回油門
17. disengage [ disin'geid ] vt. 斷開;釋放
18. MCP = Mode Control Panel 方式控制面板
19. interlock circuit [ int'l k ] 聯(互)鎖電路
20. thumb [ m ] n. (大)拇指
21. while [ hwail ] conj. (然)而; 可是
22. finger tip [ 'fig [ [ tip ] 手指尖
23. AFDS = Autopilot Flight Director System
[' :t'pailt] [di'rekt] 自動駕駛儀飛行指引系統
24. function [ 'fkn ] n. 作用;功能
25. FMA = Flight Mode Annunciator 飛行方式顯示(指示)器
26. index [ 'indeks ] n. 標志; 定位標(志)
27. prepare [ pri'p ] v. 準備;預備
28. unless [ n' les ] conj. 除非…否則;
unless 經常用來代替if not
29. advance [ d'va:ns ] v. 推進; 前進
30. predict [ pri'dikt ] vt. 預報; 預測
31. takeoff rating [ 'reiti ] 起飛(推力)額定值
32. adjustment [  'd stmnt ] n. 調節;調整
33. overcome [ ouv'km ] v. 克服
34. rigging tolerance [ 'rigi ] [ 't lrns ] 裝配誤差(公差)
35. CAS = Computed airspeed 計算空速
36. servomotor [ 's:vou'mout ] n. 伺服馬達
37. unable [ 'n'eibl ] a. 不能;無能力的
38. adjust [ 'd st ] vt. 調節(整)
39. VNAV = Vertical navigation 縱向導航
40. terminate [ 't:mineit ] v. 終(中)止; 結束
41. against [ 'genst ] prep. 相對于; 倚著;貼著
42. capture [ 'kæpt ] n. ; vt. 截獲;捕獲
43. squat [ skw t ] v. ; n. 著陸
44. residual [ ri'zidjul ] a. 剩余的;殘留的
TEXT
[1] The autothrottle (A/T) provides automatic control of engine thrust
from takeoff to touchdown, thus, reducing pilot workload. The
autothrottle is a computer-controlled electromechanical system which
controls engine thrust within engine design parameters. Throttle position
for each engine is controlled to maintain a specific engine thrust (N1) ,or
a target airspeed, for all flight regimes. It is designed to operate primarily
in conjunction with DFCS (Digital Flight Control System ) and the
FMCS (Flight Management Computer System), interfacing also takes
place with the IRS and several other systems and components.
[2] The A/T operates over the full flight regime, from takeoff through
touchdown. The A/T and DFCS work together to maintain the airplane's
flight profile. The DFCS system normally selects the A/T mode. If the
DFCS is off ,the pilot can select the desired autothrottle mode. During
the initial takeoff roll, the A/T controls thrust (N1), then holds that thrust
untill reaching a safe altitude. When climbing, the DFCS normally
maintains the airspeed and the A/T maintains the thrust. During cruise,
the A/T maintains the airspeed while the DFCS maintains the altitude.
When descending, the throttles normally return to the aft stop and the
DFCS maintains the airspeed if LVL CHG or vertical path is selected.
During the approach the DFCS maintains the vertical flight path and the
A/T maintains the selected airspeed. At flare, the throttles are retarded to
the aft stop. If a Go-Around is made, the A/T maintains thrust. At
touchdown the A/T automatically disengages.
Fig. 35-1 full flight regime A/T mode
[3] The DFCS mode control panel (MCP) is located on the P7 glare
shield. The MCP provides the pilots with a central control for the
automatic flight control functions of the airplane. The MCP provides
control of the autothrottle, autopilot and flight director. Three illuminated
push-type switches and a light are directly related to A/T operation, they
are A/T ARM SWITCH, N1 SELECT SWITCH, SPEED SWITCH, and
A/T ARM LIGHT. The A/T engage (ARM/OFF) switch is two position,
solenoid held. The switch is held in ARM, if the A/T engage interlock
　
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