前缘巡航释压活门

张杰 · 发表于 2010-4-13 15:39:44

各位机务大哥大姐，小弟请问一下B737--NG飞机主轮舱中的“前缘巡航释压活门”的主要作用是什么？谢谢！

liu733102 · 发表于 2010-4-13 16:06:27

前缘巡航释压活门shi shenme

smileboy0123 · 发表于 2010-4-14 13:15:34

巡航时防止襟翼意外伸出损坏机构

行者无疆 · 发表于 2010-4-26 16:22:22

帮你查了下手册，自己看吧，不会再让我给你翻译过来吧，呵呵

Purpose

The LE cruise depressurization valve prevents LE flap and slat extension during cruise.

Functional Description

The flap lever position switch that operates when the flap lever is up provides power for the LE cruise depressurization valve solenoid. The FSEU provides a ground for the solenoid.

The FSEU gets the inputs from these components for operation of the LE cruise depressurization valve:

LE flap and slat proximity sensors

Flap lever position sensor

Alternate flaps ARM switch

PSEU for air/ground information.

The FSEU sends a signal to close the LE cruise depressurization valve closes when all of these conditions occur for five seconds:

Flap lever at up

All LE flaps retracted

At least 7 LE slats retracted.

The LE cruise depressurization valve does not operate if any of these conditions occur:

Flap lever not up

Alternate flaps arm switch is in the ARM position

Airplane is on the ground.

You can use the FSEU BITE to send a command to operate the LE cruise depressurization valve.