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#420
by
kneecaps
on 11 May, 2009 19:03
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Next the SM software will be loaded into GPC 4.
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#421
by
Chris Bergin
on 11 May, 2009 19:04
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This could be the ice they were talking about:
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#422
by
MKremer
on 11 May, 2009 19:04
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From KSC: "Site 1 and Site 4 on MLP are complete with no discrepancies, on each pad surface there is a lot of debris, we don't know what it is but there's a bunch of debris."
Hopefully not the remains of the IMAX camera.
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#423
by
Lawntonlookirs
on 11 May, 2009 19:05
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Lawton - lack of ET live imagery was covered in L2 and in articles well ahead of launch day.
Missed it sorry.
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#424
by
Ford Mustang
on 11 May, 2009 19:07
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This could be the ice they were talking about:
More than likely. Going back in the thread, you can see the F.I.T. going back out and they are shown on OTV-009. That's also the general direction they were shooting.
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#425
by
Ben the Space Brit
on 11 May, 2009 19:08
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From KSC: "Site 1 and Site 4 on MLP are complete with no discrepancies, on each pad surface there is a lot of debris, we don't know what it is but there's a bunch of debris."
Hopefully not the remains of the IMAX camera.
Maybe the MPS transducer "dropped out" more literally than launch control thought [/only_kidding]
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#426
by
psloss
on 11 May, 2009 19:10
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More than likely. Going back in the thread, you can see the F.I.T. going back out and they are shown on OTV-009. That's also the general direction they were shooting.
Think the question is if those were the targets on the LH2 umbilical or if they were different ones. The general location (the LH2 umbilical) was known pre-launch.
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#427
by
renclod
on 11 May, 2009 19:10
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Lost power on S-O-One ?
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#428
by
Ford Mustang
on 11 May, 2009 19:12
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Lost power on S-O-One ?
I believe that was ASA 1, not quite sure what it is/does.
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#429
by
ChrisGebhardt
on 11 May, 2009 19:12
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Briefing participants are arriving. Will start soon.
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#430
by
psloss
on 11 May, 2009 19:14
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#431
by
mixologist07
on 11 May, 2009 19:15
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#432
by
ChrisGebhardt
on 11 May, 2009 19:16
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Gerst: Teams gave us a great vehicle. Tank looked good.
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#433
by
ChrisGebhardt
on 11 May, 2009 19:18
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Moses: Really good launch. Proud of team and how they worked. All the lessons we've learned since RTF paid off today. Some issues, nothing serious, demonstrated team's ability. Ice and weather were late and on top of one another. All showed maturity of team.
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#434
by
kneecaps
on 11 May, 2009 19:19
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I believe that was ASA 1, not quite sure what it is/does.
Stands for "Aerosurface Servoamplifier"
http://spaceflight.nasa.gov/shuttle/reference/shutref/orbiter/avionics/gnc/asa.html
Kyle Herring noting they saw a different current draw in the data from that ASA channel in the liftoff timeframe; too early to know what it means.
In summary the ASAs are the bridge between the GPCs commanding the aerosurfaces and the hydraulically driven hardware.
As with most things on the Orbiter there is redundancy so loss of a single ASA won't cause any loss of control. (Also remember the aero surfaces are not used for control during ascent).
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#435
by
ChrisGebhardt
on 11 May, 2009 19:21
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Moses: Weather at Moron originally predicted "no go." As time passed, weather turned out to be fine at Moron. While we were talking that, cumulus clouds developed near pad. Clouds near pad started dissipating close to launch.
ACA-1 feedback systems failed (one of four system). Looks that the power failed. System bypassed itself so no concern at all for launch. Crew not in any rush to do anything.
H2 out pressure flashed transient (two or three times). Just an alarm. No problem to ascent, just alarms. Teams in Houston did a great keeping the crew informed.
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#436
by
rfoshaug
on 11 May, 2009 19:22
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A launch team loop video of this launch would be very interesting with the issues they had during launch.
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#437
by
rdale
on 11 May, 2009 19:23
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That comes out at 530pm EDT
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#438
by
ChrisGebhardt
on 11 May, 2009 19:23
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Leinbach: Countdown was extremely clean. Went into tanking with no issues being worked or tracked. Ice was the first hiccup in the count. Ice Team was sent back to pad. Pictures showed good data and little concern. He asked the team to go back and talk for five-ten minutes because he thought things were getting a little rushed. Team came back with same recommendation that ice was no problem. We had a great liftoff. Team Atlantis is really happy to have her on-orbit finally and on her way to Hubble.
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#439
by
psloss
on 11 May, 2009 19:24
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As with most things on the Orbiter there is redundancy so loss of a single ASA won't cause any loss of control. (Also remember the aero surfaces are not used for control during ascent).
True, but they are driven during first stage (used for load relief) and you certainly want to maintain the commanded positions for the aerosurfaces during the Max-Q period.
