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JOSETI

What is this?

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Hello guys!

 

I have a doubt about the "door" that opens and closes in a cycle.

 

Is it the exhaust valve for the pressurization of cabin?

 

Which is the function for this valve? Is it creating a cycle of air? I mean, is it necessary for the air getting in and out?

 

 

Best Regards!


yeEIP.gif

Boeing777_Banner_Pilot.jpg
 

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That is the outflow valve and its job is to regulate cabin pressure by letting a certain amount of cabin air to escape while the engine bleeds pump new air in the cabin.


Alex Jevdic KORD/KHOT/KPWK

A<380 love at first flight

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It appears to be modulating, meaning it is maintaining the max differential pressure. It is a safety feature. Make sure you set you're cruise attitude in the cabin pressure controller on the overhead panel. Then the valve will not modulate like it does in the ideo.

 

VR

Todd


ATP MEL

Commercial SEL

B-747, BE-300, BE-400, DHC8, ERJ 170/190, MU-300

C-17A Globemaster III

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This is the AFT outflow valve that controls the airflow out of the airplane fuselage, The Aft outflow valve is controlled in auto mode by a Cabin Pressure Controllers (CPC). and in manual mode the AFT outflow valve is controlled by the valve switch on FWD overhead panel.

 

In the auto mode the CPC is modulating the AFT outflow valve to control the cabin pressure and control the rate of pressure change.


Mark Scheerman

 

Boeing 737-6/7/8/900 Ground Engineer

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Thx guys for the reply.

 

Another video in CRZ level.

 

 

Best Regards!


yeEIP.gif

Boeing777_Banner_Pilot.jpg
 

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