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#120
by
Zachstar
on 11 Jun, 2007 19:06
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Moving to the Airlock. Ready to attach the next SAFER.
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#121
by
Zachstar
on 11 Jun, 2007 19:12
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3/4 Bolts complete!
Ground will continue with 4th
Edit: CanadaArm2 to ungrapple the S3/S4 Truss soon.
Don't expect much Ku for a bit! Approaching the ZOE
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#122
by
Lee Jay
on 11 Jun, 2007 19:18
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Norm Hartnett - 11/6/2007 11:48 AM
According to the web to desaturate the CMGs they will have to balance momentum loss from the CGMs with the RCS system. They can't do that with the arm holding the truss element. I don't think they can do it during EVA either so they will have to desaturate during the pause between latching and the EVA or after the EVA.
Does anyone know when they are going to deal with this, or if they even need to at this point?
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#123
by
Johnny Rönnberg
on 11 Jun, 2007 19:20
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to all thats is posting updates, it can never be to much information.
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#124
by
Zachstar
on 11 Jun, 2007 19:22
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SSRMS Ungrappled the S3/S4
Whohoo! Bigger ISS!
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#125
by
Norm Hartnett
on 11 Jun, 2007 19:22
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Lee Jay - 11/6/2007 12:18 PM
Norm Hartnett - 11/6/2007 11:48 AM
According to the web to desaturate the CMGs they will have to balance momentum loss from the CGMs with the RCS system. They can't do that with the arm holding the truss element. I don't think they can do it during EVA either so they will have to desaturate during the pause between latching and the EVA or after the EVA.
Does anyone know when they are going to deal with this, or if they even need to at this point?
Chris, anyone, is there anything on L2 on this subject?
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#126
by
Zachstar
on 11 Jun, 2007 19:25
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CG Image Showing SSRMS Moving away from the Truss.
Edit: Procedure Complete.
Edit2: Sunset!
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#127
by
Chris Bergin
on 11 Jun, 2007 19:32
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Norm Hartnett - 11/6/2007 8:22 PM
Lee Jay - 11/6/2007 12:18 PM
Norm Hartnett - 11/6/2007 11:48 AM
According to the web to desaturate the CMGs they will have to balance momentum loss from the CGMs with the RCS system. They can't do that with the arm holding the truss element. I don't think they can do it during EVA either so they will have to desaturate during the pause between latching and the EVA or after the EVA.
Does anyone know when they are going to deal with this, or if they even need to at this point?
Chris, anyone, is there anything on L2 on this subject?
If we get something I will copy it over. We've been following the OPO side of things with Team 4 and the OMS decision.
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#128
by
Zachstar
on 11 Jun, 2007 19:34
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Go for crew lock depress.
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#129
by
Speedracer
on 11 Jun, 2007 19:39
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Nice view of the moon rising across the CanadArm-2
Note to front page editor: Misspelling of Atlantis (Altantis') on lead story.
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#130
by
Zachstar
on 11 Jun, 2007 19:39
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4/4 Bolts! Welcome to the station S3/S4!
8 Psi
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#131
by
Namechange User
on 11 Jun, 2007 19:43
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It's not really momentum loss, it attitude hold. The station uses CMG's to do this and thrusters on the Russian segment if necessary. Orbiter does not have CMG's obviously so if we are in control of the stack and have to hold attitude we use the vernier thrusters. These produce approx 25 lbs of thrust each.
Last I heard there was no plan to put Atlantis in control.
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#132
by
Chris Bergin
on 11 Jun, 2007 19:44
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Speedracer - 11/6/2007 8:39 PM
Note to front page editor: Misspelling of Atlantis (Altantis') on lead story.
I was just testing you - well done, you passed :bleh:
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#133
by
Zachstar
on 11 Jun, 2007 19:48
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5 PSI
Sunrise in 5 mins.
Image of newly installed truss and CanadaArm2
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#134
by
JimO
on 11 Jun, 2007 19:50
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If a 4th EVA is needed, does it extend mission duration one day or two?
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#135
by
Norm Hartnett
on 11 Jun, 2007 19:50
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OV-106 - 11/6/2007 12:43 PM
It's not really momentum loss, it attitude hold. The station uses CMG's to do this and thrusters on the Russian segment if necessary. Orbiter does not have CMG's obviously so if we are in control of the stack and have to hold attitude we use the vernier thrusters. These produce approx 25 lbs of thrust each.
Last I heard there was no plan to put Atlantis in control.
With the CMGs saturated attitude hold is not possible with them unless they are desaturated. This requires that the shuttle uses vernier thrusters for attitude hold but that was not desirable during the 3/4 mounting. Is it ok to use thrusters during EVA or were the CMGs desaturated during the pause in operations following CMG attitude control failure?
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#136
by
Zachstar
on 11 Jun, 2007 19:53
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The Shuttle DAP was on at the time. So thrusters were on.
The SSRMS had brakes on so it was safe.
2 PSI
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#137
by
Speedracer
on 11 Jun, 2007 19:54
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Chris Bergin - 11/6/2007 3:44 PM
Speedracer - 11/6/2007 8:39 PM
Note to front page editor: Misspelling of Atlantis (Altantis') on lead story.
I was just testing you - well done, you passed :bleh:
Thnak you
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#138
by
Zachstar
on 11 Jun, 2007 19:55
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Image of the new addition to the ISS S3/S4.
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#139
by
Zachstar
on 11 Jun, 2007 19:56
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Our first view of the hatch!
to all thats is posting updates, it can never be to much information.
