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Article #7144Re: Lubrication problem (was Re: Galileo Stuck Ribs / Remote Manipulator?)
From: Henry Spencer
Date: Wed, 27 Jan 1993 08:07
Date: Wed, 27 Jan 1993 08:07
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In article <1993Jan14.175452.1@fnala.fnal.gov> higgins@fnala.fnal.gov (Bill Higgins-- Beam Jockey) writes:
>> Who told you that loss of lubricant was the problem? How about a
>> broken or cracked rib, or some other less obvious reason for the
>> jam?
>
>Loss of lubricant during truck travel is the best guess of Galileo's
>engineers...
It's important to note, though, that it remains only a theory, not an
established fact. What's more, this theory seems rather low in predictive
power: the same folks who told us that loss of lubricant was probably
the failure mode also told us that the heating/cooling turn sequence
would probably work the stuck ribs loose. It didn't.
This is not to say that I have any better ideas, but do bear in mind
that the hard evidence is slim and our experience with such failures
essentially nonexistent.
--
"God willing... we shall return." | Henry Spencer @ U of Toronto Zoology
-Gene Cernan, the Moon, Dec 1972 | henry@zoo.toronto.edu utzoo!henry
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Newsgroups: sci.space,sci.astro,alt.sci.planetary Path: arc1-ca.pugleaf.net!sparky!uunet!UB.com!pacbell.com!decwrl!spool.mu.edu!howland.reston.ans.net!usc!cs.utexas.edu!torn!utzoo!henry From: henry@zoo.toronto.edu (Henry Spencer) Subject: Re: Lubrication problem (was Re: Galileo Stuck Ribs / Remote Manipulator?) Message-ID: <C1I6KL.It5@zoo.toronto.edu> Date: Wed, 27 Jan 1993 08:07:31 GMT References: <9JAN199318252344@kelvin.jpl.nasa.gov> <1993Jan13.064524.13581@mr.med.ge.com> <1993Jan14.173050.20146@ke4zv.uucp> <1993Jan14.203635.21807@cbfsb.cb.att.com> <1993Jan14.175452.1@fnala.fnal.gov> Organization: U of Toronto Zoology Lines: 20