Path: utzoo!attcan!uunet!ingr!b11!xenon!kerl
From: kerl@xenon.UUCP (Dan Kerl)
Newsgroups: sci.space.shuttle
Subject: re: engine cracks
Keywords: media
Message-ID: <149@xenon.UUCP>
Date: 10 Jan 89 15:47:25 GMT
Organization: Intergraph Corp. Huntsville, AL
Lines: 35

Here is NASA's statement on the 'engine cracks', as found on the NASA
MSFC Spacelink BBS...

>12/20/88: STATEMENT ON STS-27 HPOTP BEARING CRACK
>
>
>Analysis of engine performance data from STS-27 revealed a higher
>vibration amplitude in the high pressure oxydizer turbopump on
>Space Shuttle Main Engine number three than had been experienced
>during acceptance testing.  Subsequent boriscopic inspection of
>the pump Saturday revealed an approximately .005-inch wide crack
>in the inner race of one of four bearings in the turbopump.  NASA
>plans to remove the pump from the engine and return it to the
>manufacturer, Rockwell International, Rocketdyne Division in
>Canoga Park, Calif., for disassembly, inspection and analysis, to
>determine the cause of the crack. The impact, if any, to the
>scheduled February launch of STS-29 is not yet known.
>
>

While this does appear to constitute a problem, I doubt that it was as
serious as earlier postings on this subject would have lead me to believe.

I would like to thank Peter for going to the trouble to download things
from the Spacelink BBS to this group. Well Done!
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Dan ('Never been photographed with Deacon E.L. Mouse') Kerl
Intergraph Corp.
   phone: 205-772-6118
Internet: b11!xenon!kerl@ingr.com
    UUCP: uunet!ingr!b11!xenon!kerl
  USnail: M/S CR1105
          One Madison Industrial Park
          Huntsville, AL 35807-4201
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