-
Live: STS-117 Flight Day 8 - EVA 3 (OMS Pod blanket repair - Plus More)
by
Chris Bergin
on 15 Jun, 2007 11:29
-
-
#1
by
kneecaps
on 15 Jun, 2007 11:47
-
whitewatcher
The truss structure could act like a huge antenna of course. Chaging the stations' shape leads to a change in their resonance frequencies.
Are there galvanic separations between the segments of the power supply?
What about grounding scheme?
I recall (without checking), that the US segment uses a pretty standard single point, floating ground arrangement. I remember that the Russian side of things isn't so clear cut....
-
#2
by
Zachstar
on 15 Jun, 2007 11:49
-
-
#3
by
Chandonn
on 15 Jun, 2007 11:49
-
Just re-reading some of the news reports last night I noticed that a symptom of the computer failure would lead to CMG saturation. I recall we were having saturation problems on this flight BEFORE S3/4 was actually mated. I'm wondering if there may be an existing problem. Perhaps the new ethernet cable may be the culprit after all.
EDIT: early morning typos...
-
#4
by
ardy
on 15 Jun, 2007 11:50
-
I see the "assistant paper punch operator" cleaning up after the binding of the days books. :-)
-
#5
by
Zachstar
on 15 Jun, 2007 11:55
-
For Ku reference for today.
Station Attitude.
-
#6
by
MKremer
on 15 Jun, 2007 11:57
-
The new cable was installed externally to pass-through connectors, but I haven't read any mention that the internal side is actually connected to anything yet.
-
#7
by
whitewatcher
on 15 Jun, 2007 12:00
-
Chandonn - 15/6/2007 1:49 PM
Just re-reading some of the news reports last night I noticed that a symptom of the computer failure would lead to CMG saturation. I recall we were having saturation problems on this flight BEFORE S3/4 was actually mated. I'm wondering if there may be an existing problem. Perhaps the new ethernet cable may be the culprit after all.
That's exactly what came to my mind when the problem occured for the first time. If it's a kind of ethernet cable, why not try and pull the connector .... ? Even if it's not the source of the problem, it could be a necessary condition to it. Do you get the idea?
-
#8
by
Chandonn
on 15 Jun, 2007 12:01
-
MKremer - 15/6/2007 7:57 AM
The new cable was installed externally to pass-through connectors, but I haven't read any mention that the internal side is actually connected to anything yet.
I meant that an as example, since it was mentioned previously. I'm just wondering if there may be something else at work that we're overlooking; some condition existing prior to the install.
-
#9
by
seruriermarshal
on 15 Jun, 2007 12:02
-
So they don't repair computer ?
-
#10
by
Chris Bergin
on 15 Jun, 2007 12:06
-
seruriermarshal - 15/6/2007 1:02 PM
So they don't repair computer ?
Not yet, some level of success with troubleshooting rebots, but not completed. Waiting for updates.
-
#11
by
seruriermarshal
on 15 Jun, 2007 12:10
-
Chris Bergin - 15/6/2007 7:06 AM
Not yet, some level of success with troubleshooting rebots, but not completed. Waiting for updates.
I hear because new solar array .
-
#12
by
Chris Bergin
on 15 Jun, 2007 12:14
-
seruriermarshal - 15/6/2007 1:10 PM
Chris Bergin - 15/6/2007 7:06 AM
Not yet, some level of success with troubleshooting rebots, but not completed. Waiting for updates.
I hear because new solar array .
Welcome to the site...yes, we're fully aware of what's going on
http://www.nasaspaceflight.com/content/?cid=5135=====
Thread deleted back following the false wiggle alarm
-
#13
by
seruriermarshal
on 15 Jun, 2007 12:17
-
Chris Bergin - 15/6/2007 7:14 AM
Welcome to the site...yes, we're fully aware of what's going on
http://www.nasaspaceflight.com/content/?cid=5135
=====
Thread deleted back following the false wiggle alarm
Thank you , I'm a new member in the forum .
-
#14
by
Chris Bergin
on 15 Jun, 2007 12:20
-
Thanks to Anik in Moscow:
"There will be "big" press-conference at Mission Control Center (MCC-M) for our media at 14:00 UK, where RSC Energia president Nikolay Sevastyanov and the flight director of Russian segment Vladimir Solovyov will tell about situation with computers aboard Zvezda and Zarya."
-
#15
by
DaveS
on 15 Jun, 2007 12:26
-
Chandonn - 15/6/2007 1:49 PM
Just re-reading some of the news reports last night I noticed that a symptom of the computer failure would lead to CMG saturation. I recall we were having saturation problems on this flight BEFORE S3/4 was actually mated. I'm wondering if there may be an existing problem. Perhaps the new ethernet cable may be the culprit after all.
EDIT: early morning typos...
The CMGs saturate all the time even when the orbiter is not there! That's simply the nature of the CMGs.
The first sign of the computers starting to act up was when the S3 truss came in contact with the S1 truss, not earlier.
This has nothing to do with the CMGs.
-
#16
by
triddirt
on 15 Jun, 2007 12:34
-
Media hype alert(s)...
Just caught a CNN flash that according to "Russian sources" a "Fatal Flaw" may be present in the Russian computers..
The AP story in the morning paper (fish wrap) was using the words "massive computer failure"
Sigh..
-
#17
by
seruriermarshal
on 15 Jun, 2007 12:35
-
triddirt - 15/6/2007 7:34 AM
Media hype alert(s)...
Just caught a CNN flash that according to "Russian sources" a "Fatal Flaw" may be present in the Russian computers..
The AP story in the morning paper (fish wrap) was using the words "massive computer failure"
Sigh..
AP always do that .
-
#18
by
Zachstar
on 15 Jun, 2007 12:39
-
Crew wake about to start.
-
#19
by
Zachstar
on 15 Jun, 2007 12:41
-
Ground calls to say they will play "wakeup" in about 5 mins. :bleh:
Heard a sleepy response.
Weird start to a weird day!
)