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#120 by Avron on 27 Aug, 2006 14:55
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Chris, what where they testing last night? H2 ET vent?
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#121 by Chris Bergin on 27 Aug, 2006 15:09
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Avron - 27/8/2006 3:42 PM
Chris, what where they testing last night? H2 ET vent?
Among other things, such as the SRBs etc. -
#122 by Avron on 27 Aug, 2006 15:20
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Are you saying that they have started the SRB test? or are they just reviewing data?
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#123 by Avron on 27 Aug, 2006 15:26
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astrobrian - 27/8/2006 10:36 AM
Loved that quote from yesterday, with lightning I guess it's an accelerated case of ESD. you just cant be too safe with it when it concerns lives. As for Ernesto, I have a boss with that name, will let him know he caused all this on Monday
full quote... I like it as well... "we know just enough, to know , that we don't know, enough, to be able to press on.." -
#124 by DaveS on 27 Aug, 2006 15:29
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Avron - 27/8/2006 5:07 PM
They can test the SRBs without draining the PRSD reactants. But what they can't test is the Pyrotechnic Initiator Controllers(PICs). To test those, they have to drain the PRSD reactants and go into the aft engine compartment.
Are you saying that they have started the SRB test? -
#125 by Chris Bergin on 27 Aug, 2006 15:36
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Apparently the problem wasn't the lighning bolt itself, but the field it created around the stack.
Any clever electricians around?
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#126 by shuttle_buff on 27 Aug, 2006 15:36
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Does anybody find it interesting that the lightening bolt struck the tower lightening rod (I guess that's what it is).
If I understand the concept, this is no supposed to happen.
The idea is lightening rods bleed off atmospheic energy in the area to prevent a strike. I have a picture somewhere of a lightening strike on the pad (many years ago) and shows the strike going around the rod and touching an area close to by the SRB skirt.
That's the way is supposed to work!
shuttle_buff -
#127 by Austin on 27 Aug, 2006 15:37
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I've noticed that with each delay, the NET launch time move up (earlier). Does anyone know at what point we begin to lose optimal lighting conditions that the afternoon provides?
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#128 by punkboi on 27 Aug, 2006 15:39
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shuttle_buff - 27/8/2006 8:23 AM Does anybody find it interesting that the lightening bolt struck the tower lightening rod (I guess that's what it is). If I understand the concept, this is no supposed to happen. The idea is lightening rods bleed off atmospheic energy in the area to prevent a strike. I have a picture somewhere of a lightening strike on the pad (many years ago) and shows the strike going around the rod and touching an area close to by the SRB skirt. That's the way is supposed to work! shuttle_buff
Most videos I've seen (some are on L2, I believe) shows most lightning bolts hitting the rod. I think that's what's suppose to happen.
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#129 by DaveS on 27 Aug, 2006 15:40
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Austin - 27/8/2006 5:24 PM
The current lighted launch window ends on Sept. 14. Then there's only 3 left in the entire year, 2 in October and 1 in December.
I've noticed that with each delay, the NET launch time move up (earlier). Does anyone know at what point we begin to lose optimal lighting conditions that the afternoon provides? -
#130 by Austin on 27 Aug, 2006 15:41
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DaveS - 27/8/2006 8:27 AM
QuoteAustin - 27/8/2006 5:24 PM
The current lighted launch window ends on Sept. 14. Then there's only 3 left in the entire year, 2 in October and 1 in December.
I've noticed that with each delay, the NET launch time move up (earlier). Does anyone know at what point we begin to lose optimal lighting conditions that the afternoon provides?
Thanks, Dave -
#131 by astrobrian on 27 Aug, 2006 15:43
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I have always thought the rod itself was designed to take the strike so the lightning doesnt strike whatever the rod is there to protect.
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#132 by astrobrian on 27 Aug, 2006 15:45
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Austin - 27/8/2006 10:24 AM I've noticed that with each delay, the NET launch time move up (earlier). Does anyone know at what point we begin to lose optimal lighting conditions that the afternoon provides?
Station orbit plays a big role in when they launch. The orbit of the ISS dictates launch times, the ones we are seeing are in the optimal light period
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#133 by Chris Bergin on 27 Aug, 2006 15:51
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Word from people at KSC: Potential of a rollback and the window being lost due to Hurricane threat. Best option is to try and make Monday (although that doesn't look hopeful, given what everyone is saying, including other media).
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#134 by shuttle_buff on 27 Aug, 2006 15:53
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While I know it's still early, the 11:00a (Eastern) storm update just a few minutes ago shows Hurricane Ernesto now coming even closer to the cape than before.
If the ground speed keeps up, a Tuesday launch could now be influenced by Ernesto.
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#135 by punkboi on 27 Aug, 2006 15:59
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Chris Bergin - 27/8/2006 8:38 AM Word from people at KSC: Potential of a rollback and the window being lost due to Hurricane threat. Best option is to try and make Monday (although that doesn't look hopeful, given what everyone is saying, including other media).
By window, do you mean Tuesday's launch attempt?
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#136 by psloss on 27 Aug, 2006 16:04
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punkboi - 27/8/2006 11:46 AM
Probably the daylight/before Soyuz window -- that closes on September 7th and they'd have probably a week of work after getting back out to the pad. It could take a little while for the weather to improve after the storm passes...
By window, do you mean Tuesday's launch attempt?
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#137 by shuttle_buff on 27 Aug, 2006 16:04
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I think Chris means the entire launch window (Aug 27 to Sep 7) being lost. I'm not up on how much of an overall delay a rollback creates?
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#138 by mkirk on 27 Aug, 2006 16:04
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Monday is officially off the table!
Mark Kirkman -
#139 by DaveS on 27 Aug, 2006 16:04
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punkboi - 27/8/2006 5:46 PM
Nope. He means the entire Aug. 27-Sept. 7 window. It takes about 9 days(best case) to ready a shuttle for launch countdown following a weather-related rollback and subsequent re-rollout to pad. Then take in account the 3 days it takes to go through a launch countdown.
By window, do you mean Tuesday's launch attempt?
That's a total of 11 days. There's not that much time left in the window.
