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
What an understatement
14psi (1 bar) over HOW many square inches, and over how large an unsupported area??? Some pretty impressive external force.
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.
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.
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.
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.
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.
