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- Newsgroups: sci.space
- Path: sparky!uunet!usc!cs.utexas.edu!torn!utzoo!henry
- From: henry@zoo.toronto.edu (Henry Spencer)
- Subject: Re: DC-1 and the $23M NASA Toilet
- Message-ID: <C0pMyM.F8H@zoo.toronto.edu>
- Date: Mon, 11 Jan 1993 22:11:07 GMT
- References: <1ii451INN71d@phantom.gatech.edu> <erd.05oy@kumiss.cmhnet.org>
- Organization: U of Toronto Zoology
- Lines: 32
-
- In article <erd.05oy@kumiss.cmhnet.org> erd@kumiss.cmhnet.org (Ethan Dicks) writes:
- >... the Skylab toilet was just a large outhouse in orbit. The system
- >was a very low tech, based on the astronauts filling up plastic bags and
- >chucking them into the waste storage area.
-
- Sorry, not correct: the biomedical investigators wanted those bags,
- complete with contents. They weren't thrown out.
-
- Besides, this misses the point. *All* of these systems are basically
- just aimed at collecting the wastes into a convenient form, which goes
- into a holding area pending disposal (on the ground) or medical study.
- The significance of the Skylab toilet was that it got solid wastes into
- convenient bags quickly and reliably. That is *not* easy, and it was
- the big problem with the earlier stick-on-baggie scheme.
-
- >The toilet on the shuttle was supposed to be a major breakthrough in
- >orbital waste management. The collected human byproducts were supposed
- >to be dessicated in the vacuum of LEO and (devoid of significant volume)
- >discharged into orbit.
-
- Sorry, not correct. The old shuttle toilet stores the solid wastes until
- landing, when it is removed and cleaned out. Urine is separated to be
- dealt with differently (dumped, I think); this is what has been done by
- all such systems, including the Skylab one.
-
- The motive for the new design was that the old one, apart from being
- noisy and unreliable, simply had a limited storage capacity. The new
- one basically goes back to the get-it-into-a-bag scheme, with the bags
- dealt with (by storing them until landing) separately.
- --
- "God willing... we shall return." | Henry Spencer @ U of Toronto Zoology
- -Gene Cernan, the Moon, Dec 1972 | henry@zoo.toronto.edu utzoo!henry
-