mb339
Posts: 235
Joined: Fri Jun 01, 2001 8:37 pm

A320 Ram Air/Ventilation

Mon Oct 29, 2001 12:53 am

I have 2 questions about A320's systems.

-What is the function of RAM air's button?

-Why there is a ventilation panel? Is not the cabin ventilate by air conditioning system?

Thanks in advance.
 
Buzz
Posts: 694
Joined: Sun Nov 21, 1999 11:44 pm

RE: A320 Ram Air/Ventilation

Mon Oct 29, 2001 1:09 am

Hi Mb339, Buzz here. I haven't used that Ram air button either. but it opens up an airscoop near the LH air cond pack ram air inlet and permits ram air to enter the air cond distribution ducts.

I imagine you'd only use it on warm days, low altitude , to clear too much cigarette smoke from the cabin (grin). I don't think it's enabled when the airplane is pressurized. Airbus must have worried about oil fumes from the engine bleed air supply. We get some oil fumes from the APU every so often (bad oil seals) but i can't recall anybody needing to use it.

g'day
Buzz Fuselsausage: Line Mechanic by night, DC-3 Crew Chief by choice.
 
theairbusguy
Posts: 37
Joined: Mon Oct 01, 2001 3:48 am

RE: A320 Ram Air/Ventilation

Mon Oct 29, 2001 2:19 am

ram air is used when the 2 air conditionning packs are disfonctionning, the switch send an information to an electrical actuator and open this ram air.
it provide fresh air to the aircraft.

 
theairbusguy
Posts: 37
Joined: Mon Oct 01, 2001 3:48 am

RE: A320 Ram Air/Ventilation

Mon Oct 29, 2001 2:29 am

the ventilation panel allow to control the air flow off the packs, the cabin and cockpit temperature, the 21 packs command (on/off) and the 2 hot airs push buttons.
you can also adjust temperature using the FAP (used by cabine's crew), but the range is less than the selector in the cokpit.

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