请问发动机压气机排气阀的类型

deathgod85 · 发表于 2013-3-8 07:14:20

气动活塞式？气动蝶型阀？还是电子控制的

lanjun · 发表于 2013-3-8 07:59:40

这个排气阀应该叫VBV，手册描述如下
The variable bleed valve (VBV) system lets a part of the low pressure compressor (LPC) discharge air go to the secondary airflow. During a fast deceleration, the VBV system prevents an LPC stall. At low engine speed and during the thrust reverser operation, the VBV system keeps unwanted materials (such as water or gravel) out of the high pressure compressor (HPC). This prevents damage to the engine and improves engine stability.

The VBV doors control the LPC discharge air that goes into the secondary airflow.

The VBV system has these parts:

VBV actuator (2)

Actuation ring

Bleed doors (10) and master bleed doors (2).
VBV是活塞式的
The VBV actuator is a piston type actuator. The HMU sends servo fuel pressure to the head and rod side of the piston to move the piston to the commanded position. Each actuator has a fuel manifold mount flange to connect with the hydromechanical unit (HMU). There is one LVDT connector for each actuator. The LVDT of the left actuator connects to EEC channel B. The LVDT of the right actuator connects to EEC channel A.

yubg320 · 发表于 2013-3-8 10:59:07

排气阀当然有开关型的（只有全开和全关两种状态）和可调性的，目前基本都是电控的，但驱动力有液压，也有气动的

xuezhiyuyun · 发表于 2013-3-8 22:50:29

液压活塞的吗1楼？

nali · 发表于 2013-3-9 02:59:16

液压液压液压

zhangweilin · 发表于 2013-7-18 11:48:35

我也想知道！

online2008521 · 发表于 2013-7-18 16:33:21

我也想知道！

葉孤城 · 发表于 2013-7-18 22:47:13

电控气动的吧，好像是的。

xiaoxiong · 发表于 2013-7-23 22:08:32

电控气动的吧，好像是的。

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rabon · 发表于 2013-10-2 21:22:38

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[GE] 请问发动机压气机排气阀的类型

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中国民航大学

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南京航空航天大学