Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
How Much Pressurized Air In A 747?  
User currently offlinePPVRA From Brazil, joined Nov 2004, 9105 posts, RR: 37
Posted (9 years 5 months 1 week 6 days 11 hours ago) and read 6200 times:

Ok, so I've heard that a pressurized 747 has about 1 ton of pressurized air in them. Is this true? If not, how much is it? What about for an A380?

Let's use the B744 and A388.

"If goods do not cross borders, soldiers will" - Frederic Bastiat
1 replies: All unread, jump to last
User currently offlineStealthZ From Australia, joined Feb 2005, 5898 posts, RR: 38
Reply 1, posted (9 years 5 months 1 week 6 days 10 hours ago) and read 6188 times:
Support Airliners.net - become a First Class Member!

Pretty simple arithmetic..

If a 747 has an internal volume of roughly 27,000 cubic ft(figures are a rounded sum of the main and lower deck cargo volumes of a 744F and close enough for this exercise.)
A cubic ft of air at 70deg f at Sea level weighs 0.0745lb/cubic foot.

27000 x 0.0745 = 2011lb, near enough to the ton you had heard about.

At cruise altitude and a cabin altitude of 8000ft (1 cu ft of air weighs 0.0554lb)
27000 x 0.0554 = 1495lb, somewhat less than one ton.
Note figures for pax version would be lower still as more of interior volume would be taken up with seats, fittings etc.

Don't have the interior vol details for A380, but you get the picture.


If your camera sends text messages, that could explain why your photos are rubbish!
Top Of Page
Forum Index

Reply To This Topic How Much Pressurized Air In A 747?
No username? Sign up now!

Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)

Similar topics:More similar topics...
Water In Fuel Tanks, How Much? posted Fri May 7 2004 06:07:51 by Fly2hmo
How Much Fuel Can A 747 Carry? posted Wed Mar 17 2004 17:02:45 by Spotterboy
Cooling Of Cabin Air In Engine posted Wed Dec 13 2006 03:34:25 by Jawed
How Much Water Can A Jet Take? posted Sat Dec 2 2006 21:11:45 by Kearney
How Much Space Does A Sea Plane Need To Takeoff? posted Wed Oct 18 2006 22:17:49 by Fll2993
How Much To Fill Up A C152? (UK) posted Sun Aug 27 2006 01:12:14 by RichM
How Much Thrust Could A Low By-pass Tf-39 Make? posted Tue Jul 25 2006 18:24:06 by 747400sp
How Much Fuel Does The AN-225 Hold? posted Sat Jul 22 2006 20:31:45 by KDTWFlyer
How Much Fuel Uses An APU? posted Sun Mar 5 2006 15:17:05 by TheSonntag
How Much RWY Does A 744 Use? posted Wed Feb 15 2006 04:08:57 by Jetmatt777

Sponsor Message:
Printer friendly format