home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.space
- Path: sparky!uunet!utcsri!utzoo!henry
- From: henry@zoo.toronto.edu (Henry Spencer)
- Subject: Re: Lunar "colony" reality check, part 2
- Message-ID: <BxxC00.871@zoo.toronto.edu>
- Date: Wed, 18 Nov 1992 18:14:23 GMT
- References: <BxwAKL.M5B.1@cs.cmu.edu>
- Organization: U of Toronto Zoology
- Lines: 15
-
- In article <BxwAKL.M5B.1@cs.cmu.edu> roberts@cmr.ncsl.nist.gov (John Roberts) writes:
- >With so many Earth-based processes relying greatly on gravity, can you be
- >sure that low gravity will be worse than none at all? Experience with
- >chemical processes in microgravity is very limited - not counting rocket
- >engines (which I don't think of as a *process* anyway)...
-
- And actually, the experience with rockets is moderately instructive...
- Great pains have to be taken to make sure that fuel flow works right in
- free fall. Attitude-control engines and minor maneuvering systems typically
- put a flexible diaphragm between pressurizing gas and fuel, and big
- main-propulsion engines often simply can't be started without a preliminary
- shove from a smaller system to settle the fuels to the bottom of the tanks.
- --
- MS-DOS is the OS/360 of the 1980s. | Henry Spencer @ U of Toronto Zoology
- -Hal W. Hardenbergh (1985)| henry@zoo.toronto.edu utzoo!henry
-