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Posted by Fred J. McCall on August 20, 2007, 10:55 am
:
:> Just another 'Stupid Usenet Tricks 101' tactic on your part
:
:URL?
:
Duke of?
--
"Ignorance is preferable to error, and he is less remote from the
truth who believes nothing than he who believes what is wrong."
-- Thomas Jefferson
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Posted by Fred J. McCall on August 19, 2007, 5:56 am
:
:>
:>> On Sat, 18 Aug 2007 16:43:33 -0400, in a place far, far away, "Michael
:>> such a way as to indicate that:
:>>>
:>>>Be that as it may, these guys make odds that generally win for
:>>>themselves.
:>>>My (uninformed) sense is that shuttle missions have been meeting with
:>>>more
:>>>regular damage requiring repairs or burials than when the vehicles were
:>>>new.
:>>>Most of them have around the same mileage, don't they?
:>>
:>> No, they haven't. It's actually less, but they can't reduce it to
:>> zero. The only reason that it seems like more now is because we're
:>> paying a lot more attention to it than we used to.
:>>
:>> And the "mileage" of the orbiters is irrelevant. The problem is
:>> caused by the external tanks, which are new every flight, since they
:>> must be expended.
:>>
:>
:> What about the tiles?
:>
:
:What about the *stuff* that keeps coming off and effecting the tiles?
:
That 'stuff' is new with every flight. Any tiles that take damage are
replaced with new ones after every flight.
So tell us again how 'mileage' on the Shuttle somehow matters...
--
"Ignorance is preferable to error, and he is less remote from the
truth who believes nothing than he who believes what is wrong."
-- Thomas Jefferson
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Posted by Fred J. McCall on August 19, 2007, 4:27 pm
:
:>
:> :
:> :>
:> :>> On Sat, 18 Aug 2007 16:43:33 -0400, in a place far, far away, "Michael
:> :>> such a way as to indicate that:
:> :>>>
:> :>>>Be that as it may, these guys make odds that generally win for
:> :>>>themselves.
:> :>>>My (uninformed) sense is that shuttle missions have been meeting with
:> :>>>more
:> :>>>regular damage requiring repairs or burials than when the vehicles were
:> :>>>new.
:> :>>>Most of them have around the same mileage, don't they?
:> :>>
:> :>> No, they haven't. It's actually less, but they can't reduce it to
:> :>> zero. The only reason that it seems like more now is because we're
:> :>> paying a lot more attention to it than we used to.
:> :>>
:> :>> And the "mileage" of the orbiters is irrelevant. The problem is
:> :>> caused by the external tanks, which are new every flight, since they
:> :>> must be expended.
:> :>>
:> :>
:> :> What about the tiles?
:> :>
:> :
:> :What about the *stuff* that keeps coming off and effecting the tiles?
:> :
:>
:> That 'stuff' is new with every flight. Any tiles that take damage are
:> replaced with new ones after every flight.
:>
:> So tell us again how 'mileage' on the Shuttle somehow matters...
:
:I never mentioned *mileage*.
:
So you merely took the side of the guy who did.
Same difference...
--
"Some people get lost in thought because it's such unfamiliar
territory."
--G. Behn
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Posted by Fred J. McCall on August 20, 2007, 2:55 am
:
:>
:> :
:> :>
:> :> :
:> :> :>
:> :> :>> On Sat, 18 Aug 2007 16:43:33 -0400, in a place far, far away,
:> "Michael
:> in
:> :> :>> such a way as to indicate that:
:> :> :>>>
:> :> :>>>Be that as it may, these guys make odds that generally win for
:> :> :>>>themselves.
:> :> :>>>My (uninformed) sense is that shuttle missions have been meeting
:> with
:> :> :>>>more
:> :> :>>>regular damage requiring repairs or burials than when the vehicles
:> were
:> :> :>>>new.
:> :> :>>>Most of them have around the same mileage, don't they?
:> :> :>>
:> :> :>> No, they haven't. It's actually less, but they can't reduce it to
:> :> :>> zero. The only reason that it seems like more now is because we're
:> :> :>> paying a lot more attention to it than we used to.
:> :> :>>
:> :> :>> And the "mileage" of the orbiters is irrelevant. The problem is
:> :> :>> caused by the external tanks, which are new every flight, since
:> they
:> :> :>> must be expended.
:> :> :>>
:> :> :>
:> :> :> What about the tiles?
:> :> :>
:> :> :
:> :> :What about the *stuff* that keeps coming off and effecting the tiles?
:> :> :
:> :>
:> :> That 'stuff' is new with every flight. Any tiles that take damage are
:> :> replaced with new ones after every flight.
:> :>
:> :> So tell us again how 'mileage' on the Shuttle somehow matters...
:> :
:> :I never mentioned *mileage*.
:> :
:>
:> So you merely took the side of the guy who did.
:
:Just like YOU did.
:
Well, no. You don't read very well, do you?
:
:> Same difference...
:
:Duh.
:
Brightest thing you've said so far...
--
"Some people get lost in thought because it's such unfamiliar
territory."
--G. Behn
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Posted by Brian Thorn on August 19, 2007, 10:19 am
wrote:
>What about the *stuff* that keeps coming off and effecting the tiles?
It is foam insulation from the External Tank. This was widely reported
following the Columbia accident in 2003.
NASA has already reduced foam shedding from the External Tank by well
over 90% since Columbia. The places where foam has been falling off
the worst are the nooks and crannies, the little bumps and crevaces in
the structure of the Tank that are hard to model in a computer... the
bipod ramp lost foam that caused the Columbia accident. Return to
Flight lost a big chunk of the PAL ramp but caused no damage. NASA has
been working on changing the Ice/Frost Ramps. The support brackets on
the Liquid Oxygen feed line have caused problems on the last two
flights.
A major impact on the tiles is going to cause damage. It doesn't
matter if it is an aging tile from 1984 or one factory-fresh.
Brian
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