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What Is The Vent On The Side Of This DC-10?  
User currently offlineGulfstream650 From United Kingdom, joined Mar 2008, 539 posts, RR: 0
Posted (4 years 4 months 3 weeks 4 days 9 hours ago) and read 5203 times:

There is a vent of some sort on this aircraft to the left of the number 1 engine in this photo. What is it?

Many thanks!


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Photo © Juan Carlos Guerra - FlyAPM




I don't proclaim to be the best pilot in the world but I'm safe
12 replies: All unread, jump to last
 
User currently offlineBladeLWS From United States of America, joined Dec 2005, 403 posts, RR: 0
Reply 1, posted (4 years 4 months 3 weeks 4 days 9 hours ago) and read 5197 times:

I'm gonna say its an outflow valve for the cabin pressure.

User currently offlinec5load From United States of America, joined Sep 2008, 917 posts, RR: 0
Reply 2, posted (4 years 4 months 3 weeks 4 days 9 hours ago) and read 5183 times:

Quoting BladeLWS (Reply 1):
I'm gonna say its an outflow valve for the cabin pressure.

What about an air conditioning intake vent?



"But this airplane has 4 engines, it's an entirely different kind of flying! Altogether"
User currently offlineBladeLWS From United States of America, joined Dec 2005, 403 posts, RR: 0
Reply 3, posted (4 years 4 months 3 weeks 4 days 8 hours ago) and read 5170 times:

Quoting c5load (Reply 2):
What about an air conditioning intake vent?

Those should be on the nose infront of the nose wheel, packs intake and avionics cooling, an intake wouldn't have a valve like that.

[Edited 2010-06-01 19:58:43]

User currently offlineFly2HMO From , joined Dec 1969, posts, RR:
Reply 4, posted (4 years 4 months 3 weeks 4 days 8 hours ago) and read 5156 times:

Quoting BladeLWS (Reply 1):
I'm gonna say its an outflow valve for the cabin pressure.

Me thinks so too.

Quoting c5load (Reply 2):
What about an air conditioning intake vent?

Nope. Intakes are purposely made to be able to, well, intake as much air as efficiently as possible. A random flat hole on the side of the fuselage will not have air flowing into it, and therefore would not work as an intake. Intakes usually look like a teardrop with a flat bottom or like a wedge of sorts, like on the nose of this plane.

A more obvious pic:


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Photo © Alevik



[Edited 2010-06-01 20:12:12]

User currently offlinetdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 5, posted (4 years 4 months 3 weeks 4 days 6 hours ago) and read 5081 times:

Quoting Gulfstream650 (Thread starter):
There is a vent of some sort on this aircraft to the left of the number 1 engine in this photo. What is it?

Definitely an outflow valve...the visible flapper is a dead giveaway.

Quoting c5load (Reply 2):
What about an air conditioning intake vent?

Those are farther forward...you can see two NACA scoop inlets just below and aft of the "V" in "PETETE V" on the nose.

Tom.


User currently offlineCosmicCruiser From United States of America, joined Feb 2005, 2255 posts, RR: 15
Reply 6, posted (4 years 4 months 3 weeks 3 days 20 hours ago) and read 4921 times:

tdscanuck is right. Yes, it's the outflow valve. Same on the MD-11 as well. You can see the pack inlet doors on the lower nose with the third not visible on the other side.

User currently offlineKELPkid From United States of America, joined Nov 2005, 6408 posts, RR: 3
Reply 7, posted (4 years 4 months 3 weeks 3 days 11 hours ago) and read 4699 times:

Quoting tdscanuck (Reply 5):
Definitely an outflow valve...the visible flapper is a dead giveaway.
Quoting CosmicCruiser (Reply 6):
tdscanuck is right. Yes, it's the outflow valve. Same on the MD-11 as well. You can see the pack inlet doors on the lower nose with the third not visible on the other side.

Is it just me, or am I mistaken in the (now disproved) belief that the cabin outflow valve is usually located at the rear of the pressure dome in the fuselage?



Celebrating the birth of KELPkidJR on August 5, 2009 :-)
User currently offlineFly2HMO From , joined Dec 1969, posts, RR:
Reply 8, posted (4 years 4 months 3 weeks 3 days 11 hours ago) and read 4696 times:

Quoting KELPkid (Reply 7):
is usually located at the rear of the pressure dome in the fuselage?

That's how it is usually. However, I don't know of any reason why it HAS to be back there. Maybe somebody can enlighten us.


User currently offlineZANL188 From United States of America, joined Oct 2006, 3546 posts, RR: 0
Reply 9, posted (4 years 4 months 3 weeks 3 days 10 hours ago) and read 4679 times:
Support Airliners.net - become a First Class Member!

Just FYI, this question probably should be in an a.net FAQ. Comes up from time to time.

What's This Little Door On The DC-10? (by Starlionblue May 2 2005 in Tech Ops)

Open Panel On The Port Side On The DC-10 (by Alphafloor Jan 12 2005 in Tech Ops)

[Edited 2010-06-02 18:00:35]


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User currently offlineboeing767mech From United States of America, joined Dec 2000, 1029 posts, RR: 3
Reply 10, posted (4 years 4 months 3 weeks 3 days 10 hours ago) and read 4656 times:

Quoting KELPkid (Reply 7):
Is it just me, or am I mistaken in the (now disproved) belief that the cabin outflow valve is usually located at the rear of the pressure dome in the fuselage?
Quoting Fly2HMO (Reply 8):
That's how it is usually. However, I don't know of any reason why it HAS to be back there. Maybe somebody can enlighten us.

The A330 and A340 has the outflow valves in the belly behind the wing to body fairings.

The 777 has two outflow valves one near the aft pressure bulkhead, and the other in the belly just behind nose landing gear.

The JS3101 and 3201 have the outflow valve on the fwd pressure bulkhead near the co-pilots feet.

I was told by an instructor in a gen fam class on the 767 that they put the outflow valve near the pressure bulkhead to help aid the flow of air in the cabin. Since most of the air comes from overhead ducts and the outflow valves are located below the cabin floor area. But then that was what he explained. All I know is if it is broken I fix it, where ever it is located.

David



Never under-estimate the predictably of stupidty
User currently offlinetdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 11, posted (4 years 4 months 3 weeks 3 days 7 hours ago) and read 4585 times:

Quoting KELPkid (Reply 7):
Is it just me, or am I mistaken in the (now disproved) belief that the cabin outflow valve is usually located at the rear of the pressure dome in the fuselage?

Many aircraft have two, in which case you usually have one forward and one aft.

Tom.


User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 12, posted (4 years 4 months 3 weeks 1 day 1 hour ago) and read 4178 times:

Main Outflow Valve.
regds
MEL.



Think of the brighter side!
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