provides the major portion of engine thrust.

FAN (NO. 2), A device consisting of one or more          風(fēng)扇（NQ．2），

revolving blades attached to a rotary hub and operated     安裝在由馬達(dá)驅(qū)動(dòng)的旋轉(zhuǎn)輪殼上的一片或多片旋轉(zhuǎn)槳

by a motor. Fans are usually used to provide cooling or  葉所組成的裝置。通常用來(lái)提供冷卻或空氣循環(huán)。

air circulation.

FAN AIR, The portion of airflow through a turbofan       風(fēng)扇氣流，

engine which passes only through the fan.                  在渦輪風(fēng)扇發(fā)動(dòng)機(jī)中，僅僅通過(guò)風(fēng)扇的那部分氣流。

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英漢對(duì)照民用航空詞典                                     BOEING

FAN COWL, A covering around the fan section of the    風(fēng)扇整流罩，

engine that can be opened for access to the             在發(fā)動(dòng)機(jī)風(fēng)扇周圍的可卸蓋殼，打開(kāi)后可以夠到發(fā)動(dòng)

components on the engine.                             機(jī)部件。

FASTENER, A mechanical device such as a bolt, nail,   緊固件，

rivet or screw that is used to tie two objects together. 用來(lái)將兩個(gè)物體連接起來(lái)的機(jī)械裝置。如螺栓，釘子，

                                                      鉚釘，或螺釘。

FATIGUE OR FATIGUE FAILURE, The failure of a          疲勞或疲勞斷裂，

material because of bending, flexing or severe vibration 因彎曲或劇烈振動(dòng)力所造成的材料斷裂。

forces.

FAULT ISOLATION MANUAL (FIM), A manual which          故障隔離手冊(cè) （FIM），

contains procedures for isolating and correcting        內(nèi)含隔離并排除飛機(jī)故障程序的手冊(cè)。供航空公司維修

reported airplane faults. Used by airline mechanics.  機(jī)械員使用。

FAULT REPORTING MANUAL (FRM), A manual used           故障報(bào)告手冊(cè)（FRM），

by flight crews to aid in reporting airplane system     機(jī)組使用的一本手冊(cè)。用以幫助他們報(bào)告飛機(jī)系統(tǒng)的故

malfunctions.                                         障。

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