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#280
by
madmardy
on 28 May, 2007 08:19
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Does anybody know
Where they keep the recovery convoy purge and cooling trucks when they are not being used?
Well actually all the main convoy trucks
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#281
by
Jim
on 28 May, 2007 13:45
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There is a storage building between the SLF and OPF. Some of the vehicles stay at the SLF parksite
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#282
by
madmardy
on 28 May, 2007 18:46
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cheers for that, i checked it out on google earth and low and behold there they are parked out side the building you mentioned. Not sure why i didn't look there before
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#283
by
Endeavour118
on 29 May, 2007 14:21
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What Is Clear Caution and Warning Memory?
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#284
by
MKremer
on 29 May, 2007 15:25
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#285
by
Jorge
on 29 May, 2007 15:39
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Endeavour118 - 29/5/2007 9:21 AM
What Is Clear Caution and Warning Memory?
Caution and Warning is the system that alerts the crew (using fault messages, alarms, etc) when there's a problem (parameters out-of-limits, hardware failure, etc). During launch countdown, there are certain events that "normally" trip a C&W alarm. For troubleshooting purposes later on during the flight, you don't want those events cluttering up C&W memory. So at T-2:30, the crew clears all messages from the FAULT SUMM display (first making sure that all the errors were the expected ones), and clears C&W memory by flipping a switch on the center panel between the CDR and PLT.
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#286
by
mkirk
on 29 May, 2007 15:41
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Endeavour118 - 29/5/2007 9:21 AM
What Is Clear Caution and Warning Memory?
This would be a good question for one of those DPS (data processing system) weenies to answer but I take a shot at it for now.
All of the caution & warning messages that have been annunciated during the countdown are cleared at T-2 minute 30 seconds by the flight crew. This prevents the old messages that are still stored in the buffer from being confused with new warnings that may occur during the final minutes of the count and ascent.
Specifically the pilot (seated in the right seat) will call up the fault summary pages for the PASS (primary) general purpose computers (GPC) and BFS (backup) GPC to ensure that all of the displayed warnings were the ones everyone expected to see – things like cabin pressure messages that occurred during the cabin leak check. Once that is done the pilot will type in “SPEC 99 PRO” on the keyboard for both the PASS and BFS GPCs – this clears the software memory buffer. The pilot will then move the caution and warning switch, located on the center console, to the clear position – this clears the hardware caution and warning memory.
Mark Kirkman
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#287
by
mkirk
on 29 May, 2007 15:44
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Oops Sorry-
It looks like Jorge did beat me to the answer on that.
See like I said it was a good topic for one of those DPS pukes.
Mark Kirkman
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#288
by
mkirk
on 29 May, 2007 17:42
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Yeah my bad, I missed the left verses right class...
I went back and fixed it.
Mark Kirkman
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#289
by
joncz
on 31 May, 2007 01:05
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What does the gauge at top right in the white room measure? It's showing 21.32%
I can think of two things and immediately dismiss them:
-- Humidity: On the coast in Florida?!? Besides, 21% is unhealthy low for electronics.
-- O2: Why would they need hundredths of a percent of O2 percent?
The number has been right at 21.32% for as long as I've seen white room shots since the rollout.
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#290
by
Lee Jay
on 31 May, 2007 01:13
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I don't actually know the answer, but I'd guess it's O2, and needed because a purge gas like Nitrogen is available there and could dilute the O2 right out of the air in there if there was a leak or other failure of some sort.
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#291
by
MKremer
on 31 May, 2007 01:18
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Lee Jay - 30/5/2007 8:13 PM
I don't actually know the answer, but I'd guess it's O2, and needed because a purge gas like Nitrogen is available there and could dilute the O2 right out of the air in there if there was a leak or other failure of some sort.
Yeah, it's O2 percentage. The interesting thing about watching that gauge is noting how the # of people and activies in the white room cause it to vary - I've seen it down into the mid-19's with the room full of people doing prep's and 19's/low 20's during crew entry for launches.
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#292
by
Jim
on 31 May, 2007 12:11
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It measures the O2 content in the orbiter crew compartment
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#293
by
STS-500Cmdr
on 31 May, 2007 16:50
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Ya know i was thinking of asking that question about the meter in the white room glad to see someone else had the same thought and asked. This maybe a stupid question and i may be answering my own question here-but, the white bag over the hatch with ATLANTIS down the side-what is that for? I always been under the idea thats to keep dust and whatnot off of it and out of its mechanism--am i correct? And i always notice when we see the white room--not in this shot like above but the shot we always see when the astronauts are getting onboard, getting the parachutes on, etc--on the right wall of the white room i always see a kind of flat, curved metal thing hanging from the wall--looks a bit like one of those sun tan things. Do you know what im talking about?
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#294
by
Jim
on 31 May, 2007 17:09
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The hatch cover is to protect the hatch and the TPS
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#295
by
gordo
on 02 Jun, 2007 19:17
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Looking at a few pics of rollout and just before launch, a rather large structure is left down the crawlerway about 100ft in front of the pad. I thought it might have been the MLP engine work platform, but looks a bit big...what it is and how does it get there?
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#296
by
Jim
on 02 Jun, 2007 19:27
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It is the SSME work platform. It towed under the MLP.
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#297
by
madmardy
on 02 Jun, 2007 21:23
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I'm not sure whether this has been covered before
but whats the difference between the roles of booster and main engines in MCC?
as in the STS-93 video they seem to be doing very similar things
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#298
by
Mark Dave
on 02 Jun, 2007 21:29
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For the SME platform, how is it moved into place to service the engines? I've seen it sitting in the MLP exhaust hole when the stack is being moved on the CT,but never seen it being removed or put there.
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#299
by
Jim
on 02 Jun, 2007 21:36
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It is towed by a tractor/forklift etc
