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View Full Version here: : Interesting: World's largest vacuum chamber.

Omaroo
12-02-2009, 12:44 PM
Very cool indeed. I'd imagine that there would be some SERIOUS pressure on the walls and seals of this thing. Amazing engineering!

http://www.nasa.gov/multimedia/imagegallery/image_feature_1281.html
Lee
12-02-2009, 12:54 PM
Wouldn't like to get caught in there when she's activated......
DJDD
12-02-2009, 12:56 PM
impressive.
I wonder what pressure they will attain will be and what type of vacuum pumps will be used?
ving
12-02-2009, 03:45 PM
god!

i was expecting a picture of my head! ;)
TrevorW
12-02-2009, 05:21 PM
Gee that sucks

!!!!
Jen
12-02-2009, 06:12 PM
:lol::lol::lol:
Glenhuon
13-02-2009, 10:50 PM
Always thought that was in Canberra. Parliament House :)

Bill
Omaroo
14-02-2009, 06:59 AM
Hmmm... wrong crowd. LOL

:whistle:
astroron
14-02-2009, 09:19 AM
To enclose the acoustic chamber, a door of vast proportion is being built as well. The door, weighing in at 675,000 pounds, (must be built in place due to its size:eyepop:
What an understatement:P
BerrieK
14-02-2009, 11:26 AM
Spaceship in a bottle!!

But with more concrete and much louder.
strongmanmike
14-02-2009, 06:24 PM
At first glance I thought it was GW's brain :P
Archy
14-02-2009, 07:19 PM
maximum one atmosphere pressure if it is a vacuum chamber
Archy
Omaroo
14-02-2009, 07:50 PM
14psi (1 bar) over HOW many square inches, and over how large an unsupported area??? Some pretty impressive external force.
Archy
15-02-2009, 03:00 PM
Now you're talking force: a different thing altogether.
Originally you wrote "serious pressure" in response to that I wrote the pressure would be one atmosphere.
Omaroo
15-02-2009, 04:48 PM
My apologies - a colloquialism....:)
DJDD
15-02-2009, 05:25 PM
still like to know what pressure they attain and over what time period.
anyone read anything about that?
Archy
16-02-2009, 06:06 PM
one Atmosphere: 14.7 psi
DJDD
16-02-2009, 07:43 PM
perhaps I misread the article.
I thought it was a vacuum chamber...?

if so, 1 atmosphere is not much of a vacuum...
Omaroo
17-02-2009, 07:30 AM
Vacuum chambers are evacuated by pumps. These are never fully able to attain a true vacuum and there are always pleny of molecules floating around. I think that DJDD was asking what partial pressure they are able to achieve and for the volume of the chamber, how long it takes to get there.
DJDD
17-02-2009, 09:15 AM
I have worked on ultra-high vacuums (http://en.wikipedia.org/wiki/Ultra-high_vacuum) and even evacuating small volumes (less than 1 cubic meter) would take all night. And then when vacuum was broken you would have to go through that all again!

I do not think the vacuum chamber in this article will get down to those pressures but would be interested to know.