Few 320 system questions.
Thread Starter
Join Date: Oct 2011
Location: Everywhere
Posts: 20
Likes: 0
Received 0 Likes
on
0 Posts
Few 320 system questions.
Just looking for clarification, what are the differences between the TWO "RAT MAN ON" - on the hyd overhead panel section, and then "MAN ON" on the emerg elec power section.
Also, the ram air inlet is basically closed in flight, and will be opened automatically if needed to?
It has to be closed on ground if there is heavy rain by pushing override on the extract Push Button, is this correct?
Also when enroute and smoke in encountered both blower and extract have to be set to override I believe.
What exactly does this do?
Also, the ram air inlet is basically closed in flight, and will be opened automatically if needed to?
It has to be closed on ground if there is heavy rain by pushing override on the extract Push Button, is this correct?
Also when enroute and smoke in encountered both blower and extract have to be set to override I believe.
What exactly does this do?
Join Date: Oct 2009
Location: UK
Posts: 1,270
Likes: 0
Received 0 Likes
on
0 Posts
Hi,
Either button will drop the RAT and run the Blue Emergency Hydraulic pump.
The "MAN ON" switch (on the electric panel) additionally brings the emergency electrical generator on line.
You could open it manually in flight, when de-pressurised, to provide cabin ventilation without any packs.
You are confusing two different systems.
On the ground & in heavy rain, pushing the override on the extract Push Button will put the Avionics Bay cooling system into the "closed circuit configuration" (closes the skin valves) and prevents rain water entering the plumbing.
Forces the air in the Avionics bay overboard without mixing any of it with cabin air.
If you find any of the switching confusing - then welcome to the club!
The same switch position can have opposite effects depending on another logic gate triggered by a different sensor.
The pictures on the systems pages help.
Just looking for clarification, what are the differences between the TWO "RAT MAN ON" - on the hyd overhead panel section, and then "MAN ON" on the emerg elec power section.
The "MAN ON" switch (on the electric panel) additionally brings the emergency electrical generator on line.
Also, the ram air inlet is basically closed in flight, and will be opened automatically if needed to?
It has to be closed on ground if there is heavy rain by pushing override on the extract Push Button, is this correct?
On the ground & in heavy rain, pushing the override on the extract Push Button will put the Avionics Bay cooling system into the "closed circuit configuration" (closes the skin valves) and prevents rain water entering the plumbing.
Also when enroute and smoke in encountered both blower and extract have to be set to override I believe.
What exactly does this do?
What exactly does this do?
If you find any of the switching confusing - then welcome to the club!
The same switch position can have opposite effects depending on another logic gate triggered by a different sensor.
The pictures on the systems pages help.
Last edited by rudderrudderrat; 30th Dec 2011 at 09:15. Reason: still can't spell
