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#500
by
Bubbinski
on 14 Jun, 2007 04:26
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Replay of SRB video coming up in 5 minutes, followed by Flight Day 5 package. COOL.
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#501
by
ZeeNL
on 14 Jun, 2007 04:28
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jmjawors - 14/6/2007 6:18 AM
ZeeNL - 13/6/2007 10:51 PM
For predicting passes...
I've found NASA.gov's own tracker to be unfailingly accurate. Add it to the list as well. 
Got a link?
Of course it is always nice to track the orbit on your own computer.
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#502
by
JimO
on 14 Jun, 2007 04:32
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Mike S. hiccupped at my question on ground-based EMI because, when we chatted later off-line, he told me the raw data was HIGHLY classified. Then he made ME hiccup when he said they were also considering off-planet external EMI sources -- other satellites. He grinned and it was clear he was NOT going to provide any more background information.
My bringing the topic up was based on the inaguration in recent months of two major new space debris monitoring radar nets, one French and one Chinese, and the possibility that they would be pinging the ISS/shuttle now, at high power, simply our of curioisity -- it might be the first docking mission that their best antennas have a chance of seeing. Early shuttle flights ran into Soviet radar EMI on their internal comm circuits, and Chinese voice coming over their a/g.
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#503
by
Norm Hartnett
on 14 Jun, 2007 04:36
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rdale - 13/6/2007 9:23 PM
Bubbinski - 14/6/2007 12:18 AM
I would hope the computers come back on line, and being in tech support I agree with Norm....what changed? I would also add, what error messages were they getting on boot up? Can they replicate it on the ground?
If you watched the presser they mentioned that the Russians need to wait for ISS to pass over Russia at the right times for them to get all the details down that they need. And it was mentioned that occurs overnight / early tomorrow morning. So they really haven't been able to fully troubleshoot - to even think to start mentioning a possible end to ISS and Space Shuttle missions is quite surprising to me...
Yes I am hoping we will hear some translation of the debuging process. There was some very interesting chit chat going on in the background just prior to the EVA. It is going to be tough on the Russian crewmen, they will be up all night. Oh well. That's IT for you.
I agree. It is way to early to start thinking about abandoning ship but they did have last night to debug too so it is not an easy one.
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#504
by
ZeeNL
on 14 Jun, 2007 04:37
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JimO - 14/6/2007 6:32 AM
Mike S. hiccupped at my question on ground-based EMI because, when we chatted later off-line, he told me the raw data was HIGHLY classified. Then he made ME hiccup when he said they were also considering off-planet external EMI sources -- other satellites. He grinned and it was clear he was NOT going to provide any more background information.
My bringing the topic up was based on the inaguration in recent months of two major new space debris monitoring radar nets, one French and one Chinese, and the possibility that they would be pinging the ISS/shuttle now, at high power, simply our of curioisity -- it might be the first docking mission that their best antennas have a chance of seeing. Early shuttle flights ran into Soviet radar EMI on their internal comm circuits, and Chinese voice coming over their a/g.
Holy cow! So I guess some polite questions are going out to other nations to stop radar activities pointed at the complex for a while.
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#505
by
Polecat
on 14 Jun, 2007 04:38
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I do not see China being happy to alter anything, unless Russia ask.
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#506
by
jmjawors
on 14 Jun, 2007 04:42
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ZeeNL - 13/6/2007 11:28 PM
Got a link? Of course it is always nice to track the orbit on your own computer.
I'm sure this is far simpler than what you're used to, but the times they provide have always been exactly accurate when I've used it:
http://www.jsc.nasa.gov/sightings/index.html
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#507
by
JimO
on 14 Jun, 2007 04:42
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The external EMI stuff is cute, but I doubt very relevant.
The odds are the problems are associated with the new truss element, but tracing EMI is a devlishly frustrating task -- I spend three shuttle missions during planning shifts (crew asleep)seeking the cause of one type of 'noise' in the Ku-band radar, and I suspected it was associated with "impossible" signal leakage across power buses from an instrumentation package, but never could prove it and we just learned to live with it.
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#508
by
gruff68
on 14 Jun, 2007 04:48
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JimO - 13/6/2007 11:32 PM
"Mike S. hiccupped at my question on ground-based EMI"...
Boy, did he! He really had that "deer in the headlight" look.
:laugh:
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#509
by
ZeeNL
on 14 Jun, 2007 04:51
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jmjawors - 14/6/2007 6:42 AM
ZeeNL - 13/6/2007 11:28 PM
Got a link? Of course it is always nice to track the orbit on your own computer.
I'm sure this is far simpler than what you're used to, but the times they provide have always been exactly accurate when I've used it:
http://www.jsc.nasa.gov/sightings/index.html
Thanks for the link. STSPLUS is nice because you can see when the complex is in daylight or when it is in TDRS coverage. Orbitron is nice for the better pictures. How accurate they are depends on the data you feed those programs.
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#510
by
Space101
on 14 Jun, 2007 04:51
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Uninformed question here...while the source maybe hard to impossible to trace, is there a possible solution to filter it, so that in effect, it wouldn't matter if there was EMI contamination, as it was being filtered out, or would that filter potentially be detremetal to ISS systems?
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#511
by
Norm Hartnett
on 14 Jun, 2007 04:52
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JimO - 13/6/2007 9:42 PM
The external EMI stuff is cute, but I doubt very relevant.
The odds are the problems are associated with the new truss element, but tracing EMI is a devlishly frustrating task -- I spend three shuttle missions during planning shifts (crew asleep)seeking the cause of one type of 'noise' in the Ku-band radar, and I suspected it was associated with "impossible" signal leakage across power buses from an instrumentation package, but never could prove it and we just learned to live with it.
It was a great question and his reaction showed that they thought so to and were already asking it. I am not so sure about it being a 3/4 electrical/data problem but thats where the smart money is.
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#512
by
yinzer
on 14 Jun, 2007 04:52
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Hmm... aren't the French and Chinese space surveillance radars very similar in concept to NAVSPASUR; i.e. you could look at when the computer took a dump, and if the station isn't in the beam pattern, it's probably not that radar?
That said, "If it worked before, and you changed something, and it doesn't work now, chances are you broke it" is practically the first law of troubleshooting. I wish them all good luck.
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#513
by
Bubbinski
on 14 Jun, 2007 04:56
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Just to change the subject a minute here are a few snapshots of the SRB video. I didn't get many shots, but VLC is a great media player that's much easier to work with than Windows Media Player on this.
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#514
by
ApolloLee
on 14 Jun, 2007 05:45
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I think we're being a tad overdramatic on this computer front, saying it could mean the end of ISS and the shuttle program.
A day or so ago, many on this board went ballistic on the media making it sound like the torn insulation means the shuttle may burn up, or the same said with those reports of tps hits yesterday.
Yet now, I'm seeing some of the same behavior on this board.
Let's take a chill pill and let them analyze this before we prognosticate gloom and doom.
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#515
by
Earth_Bound_Misfit
on 14 Jun, 2007 05:55
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ApolloLee - 14/6/2007 4:45 PM
Yet now, I'm seeing some of the same behavior on this board.
Guilty here, sorry fellas.
It appears their looking at local EMI as a possible culprit.
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#516
by
psloss
on 14 Jun, 2007 10:45
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Norm Hartnett - 13/6/2007 12:02 AM
That new external data line bothers me. Too exposed, possibly unterminated, stuff like that is what I look for.
I missed the press briefing, but another change is that the P6 array is probably no longer providing power with this 2B wing now partially folded up.
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#517
by
psloss
on 14 Jun, 2007 11:13
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Via the Russian translator, the report is that Moscow is now getting full telemetry from the Russian computers.
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#518
by
psloss
on 14 Jun, 2007 11:17
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Now have a lane "up" to one control and one terminal computer.
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#519
by
psloss
on 14 Jun, 2007 11:20
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Russian station crew being advised to take a break, get some rest...
Of course it is always nice to track the orbit on your own computer.