home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky sci.space:15804 alt.sci.planetary:304
- Newsgroups: sci.space,alt.sci.planetary
- Path: sparky!uunet!utcsri!torn!watserv2.uwaterloo.ca!watserv1!mks.com!andrew
- From: andrew@mks.com (Andrew Hamilton-Wright)
- Subject: Re: Lunar "colony" reality check
- Message-ID: <1992Nov12.143119.18710@mks.com>
- Organization: Mortice Kern Systems Inc., Waterloo, Ontario, CANADA
- References: <1992Nov11.143433.18514@news.weeg.uiowa.edu> <1drh9aINN91n@gap.caltech.edu> <BxKJ3t.Dux@acsu.buffalo.edu>
- Date: Thu, 12 Nov 1992 14:31:19 GMT
- Lines: 29
-
- In article <BxKJ3t.Dux@acsu.buffalo.edu> v071pzp4@ubvmsb.cc.buffalo.edu (Craig L. Cole) writes:
-
- >I'm no expert at deep sea diving or anything, but don't they use the helium
- >to increase to total atmospheric pressure in their submerisibles? So that
- >the pressure inside and outside the craft are more equal?
- >
- >This is the opposite of space -- these guys are trying keep there craft
- >from imploding due to pressure. Increasing the pressure inside the craft
- >reduces the loads on the craft's strucutre.
-
- True, and the mix gas at very high pressures is He to avoid Nitrogen
- Narcosis (intoxification - Leads to one of my Favourites : Martini's
- Law - Sixty feet down = 1 Martini)
-
- But this brings up another point I have always wondered about: Does
- the sudden decompression of the capsule during ascent (The previously
- mentioned drop in pressure from near atmospheric to the .3 atm mentioned)
- cause any (temporary) medical effects similar to the 'bends' found in
- diving when returning from a high pressure environment to a low?
- These effects are driven by the presure ratios involved.
- (Said effects would include temporary numbness, shortness of breath,
- (which I am sure occurs anyway) and possible pain in the joints)
-
- -andrew
- --
- /|| // // ,'/""\' Andrew Hamilton-Wright andrew@mks.com (519)884-2251
- / ||/// //\' `\\\ Database(Admin), Mortice Kern Systems Inc.
- / |/ /_// \\___/ 56 Scottsdale, Guelph,Ont.
- o/ "Everything is possible except skiing through a revolving door"
-