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A320 Ram Air/Ventilation  
User currently offlineMb339 From Italy, joined Jun 2001, 238 posts, RR: 3
Posted (12 years 11 months 2 days 4 hours ago) and read 5612 times:

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.

3 replies: All unread, jump to last
 
User currently offlineBuzz From United States of America, joined Nov 1999, 697 posts, RR: 21
Reply 1, posted (12 years 11 months 2 days 3 hours ago) and read 5602 times:

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.


User currently offlineTheairbusguy From France, joined Sep 2001, 37 posts, RR: 0
Reply 2, posted (12 years 11 months 2 days 2 hours ago) and read 5592 times:

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.



User currently offlineTheairbusguy From France, joined Sep 2001, 37 posts, RR: 0
Reply 3, posted (12 years 11 months 2 days 2 hours ago) and read 5585 times:

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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