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- Path: sparky!uunet!portal!cup.portal.com!BrianT
- From: BrianT@cup.portal.com (Brian Stuart Thorn)
- Newsgroups: sci.space
- Subject: Re: Let's be more specific (was: Stupid Shut Cost arguement
- Message-ID: <73255@cup.portal.com>
- Date: Sat, 9 Jan 93 10:07:39 PST
- Organization: The Portal System (TM)
- References: <1993Jan4.214819.14834@iti.org>
- <1993Jan5.215441.21415@ke4zv.uucp> <ewright.726343877@convex.convex.com>
- <1993Jan7.034841.19216@ptdcs2.intel.com>
- <ewright.726515610@convex.convex.com>
- Lines: 58
-
- >It wouldn't take a crippling accident to ground the Shuttle fleet
- >for several months. History has shown that. It could be something
- >as simple as a crane running into the side of the orbiter stack
- >or a problem with the APUs.
-
- I can think of only one incident during which this happened,
- that being the May-September, 1990 problems with Atlantis and
- Columbia. Neither Orbiter was spaceworthy at that time, for
- two unrelated causes. Bear in mind that Discovery was entirely
- flightworthy at the time but was being held back to meet the
- October, 1990 launch window for Ulysses.
-
- A crane running into the side of the orbiter stack would result
- in only that particular orbiter being unavailable. The other
- three orbiters and the other KSC launch pad would be uneffected.
- There are many spare APUs in addition to the three installed in
- each orbiter. A problem with one caused a delay in the launch of
- STS-2, and again with STS-31, but only for about two weeks each.
- A flaw in the External Tank could conceivably bring down the
- fleet, but after fifty-two successful flights, this seems unlikely.
- A bad landing would most likely be an 'act of God' accident, not
- a design flaw that would shut down the fleet for years.
- The propulsion systems seem to me the only real threat to the
- system, and these would cause a crippling accident, beyond the
- realm of this discussion.
-
- >If an orbiter hits one of the wild pigs, which live just yards from
- >the Shuttle runway, it could put the vehicle out of action for more
- >than a year, resulting in delays or cancellations of many payloads.
-
- Sure, and an earthquake could open a canyon in the runway after
- de-orbit burn. Pegasus could pitch-up and smash into the NB-52,
- Titan IV could explode on ignition and wipe out Complex 41, DC-X
- could go wild and splatter itself on Alamagordo... When was the
- last time a 767 ran into a wild pig at Orlando International,
- another runway surrounded by marshland? How about a 747 hitting
- a stray dog at you-name-it suburban airport? Let's stick to the
- probable, please.
-
- >And when (not if -- given enough Shuttle missions, it will happen)
- >there is another fatal accident, Congress and the White House will
- >shut the program down for at least another two years *if not permanently*.
-
- I disagree. Congress and the White House will either kill Shuttle
- completely or get it flying again within the year. I don't think
- ANYONE will sit still for another 32-month standdown. If Freedom
- were up and operating, I think the standdown would be a minimum.
-
- Let's just hope the next accident happens when we have a good
- replacement system well along in the development phase.
-
- -Brian
-
- -------------------------------------------------------------------------
- Brian S. Thorn "If ignorance is bliss,
- BrianT@cup.portal.com this must be heaven."
- -Diane Chambers, "Cheers"
- -------------------------------------------------------------------------
-