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大頭 asked in 汽車與交通航空器 · 1 decade ago

請問有關飛機起落架的問題

請問飛機起落架控制桿英文叫做 Landing Gear Lever, 在起落架控制桿旁還有另一個類似按鈕的東西叫做Lock OVRD Switch, 功能介紹是寫: Releases landing gear lever lock if solenoid fails to release lock after liftoff.這句解釋是什麼意思呢?

1 Answer

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  • Mason
    Lv 7
    1 decade ago
    Favorite Answer

    通常飛機的起落架有安全裝置,以免在地面上不小心把起落架控制桿往上扳,起落架若真的往上收後果不堪設想。所以有安全鎖的裝置,讓飛機在地面上時無論如何不能將起落架收起。當然起落架要正常收起,要有很多因素都正常,如飛機離地,感應飛機不在地面的感應器(GROUND SENSOR)運作正常,液壓系統正常,起落架的系統運作正常等。有的時候飛機起飛之後,起落架的控制桿因為某種原因沒辦法往上扳,這時可以試試按著OVRD(OVERRIDE)按鈕,另一手再去把起落架控制桿往上扳。但是有的時候起落架收不起來的原因是因為起落架的角度沒收對,進不去輪倉,如果強迫收起來說不定會造成輪胎,或者起落架的受損,造成落地的危險,所以按那個鈕收起落架還是要小心點。Releases landing gear lever lock if solenoid fails to release lock after liftoff.的意思就是說飛機起飛之後有個感應器(solenoid)故障,造成起落架控制桿被鎖住無法上扳,就去按鈕來鬆開那個鎖。起落架控制桿看飛機的設計,有的只有上與下兩個位置,有的有上、下、與OFF三個位置,下圖為B757的面板,是屬於後者,底下也有相關的英文解釋。

    圖片參考:http://www.757.org.uk/systems/images/lgl.gif

    The landing gear lever has three positions, UP, OFF and DN.When placed in the UP position, the landing gear retracts.The OFF position removes hydraulic pressure from the landing gear system, and is used after retraction is complete.When the lever is placed in the DN position, the landing gear extends.The Alternate Gear Extend switch (marked ALTN GEAR EXTEND) is located below the landing gear lever.In the OFF position this allows the landing gear to operate normally. When placed in the DN position the landing gear extends by the alternate extension system.Finally to the right of the landing gear lever is the Landing Gear Lever Lock Override Switch (marked LOCK OVRD). Pushing this switch releases the landing gear lever lock.

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