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#520
by
DaveS
on 24 Sep, 2010 02:05
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MCC-M is going to have Fyodor listen again for any mechanical motion of the MRM-2 latches.
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#521
by
PahTo
on 24 Sep, 2010 02:06
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Is this the first time any docking mechanism has locked up on the Russian segment? As they were going through/after depress, I heard FY call down that he had some input about the controls in MRM-2. When prompted by MC, he said he'd discuss it later...
(I got the impression he was waiting until after tv time)
Is there any type of manual crank a-la the shuttle payload bay doors?
Thanks!
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#522
by
Chris Bergin
on 24 Sep, 2010 02:08
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Can they scrub the undocking and try again tomorrow, or will it take several days for another attempt?
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#523
by
PahTo
on 24 Sep, 2010 02:13
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I would assume a scrub today would mean another try tomorrow. Heck, they're trying for tonight...
I've also thought about re-pressing the vestibule, then depressing again to shift loads.
I found it interesting that they (apparently) cycled the MRM-2 latches successfully a while ago (90 mins?) but then re-engaged for a thruster firing...
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#524
by
PahTo
on 24 Sep, 2010 02:36
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Undocking set for 04:40 GMT.
Re-opening MRM-2 side.
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#525
by
JimO
on 24 Sep, 2010 02:47
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Here are the numbers Navias reported:
undock 12:40 EDT
drift away for two orbits, to range of 12 km
deorbit burn 3:14:35 AM EDT [duration 4min21sec], slow by 115.2 m/sec
modules separation explosive bolts fire 3:39:46 EDT
entry interfact -- first sensible air drag at 326,000 ft 3:42 AM EDT
deploy parachutes 3:51 AM EDT
land 4:05:27 AM EDT
[2:05 PM in Kazakhstan, about 5.5 hrs before sunset]
The emergency landing zone is 400 km (240 miles) from
the nominal landing zone, and the recovery helicopters and
aircraft are redeploying to the backup operations base
in Arkalyk. The landing point is 50.4 N, 67.2 E.
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#526
by
Chris Bergin
on 24 Sep, 2010 03:07
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#527
by
DaveS
on 24 Sep, 2010 04:09
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Still standing by for word from the RS FCT.
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#528
by
DaveS
on 24 Sep, 2010 04:12
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Maneuver to undock attitude canceled.
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#529
by
psloss
on 24 Sep, 2010 04:13
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A few minutes ago, NASA TV was showing a replay of some downlink of a piece of a "gear mechanism" with "two broken teeth."
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#530
by
psloss
on 24 Sep, 2010 04:13
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Decision is to wave off undocking and landing for the night.
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#531
by
DaveS
on 24 Sep, 2010 04:13
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Undocking have been canceled.
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#532
by
Chris Bergin
on 24 Sep, 2010 04:14
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Yep, cancelled at least 24 hours. Not good on the broken teeth note!
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#533
by
DaveS
on 24 Sep, 2010 04:14
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A few minutes ago, NASA TV was showing a replay of some downlink of a piece of a "gear mechanism" with "two broken teeth."
Did you manage to capture some screenshots? Missed it as I was more focused on the comms.
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#534
by
psloss
on 24 Sep, 2010 04:16
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A few minutes ago, NASA TV was showing a replay of some downlink of a piece of a "gear mechanism" with "two broken teeth."
Did you manage to capture some screenshots? Missed it as I was more focused on the comms.
No, I was hoping someone here might have...but I'm sure we'll see it again if it's related to the problem.
Sounds like they're going to work on opening up the hatches.
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#535
by
GoForTLI
on 24 Sep, 2010 04:20
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#536
by
PahTo
on 24 Sep, 2010 04:20
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I would assume the "broken teeth/mechanism" was seen when they opened the MRM-2 side.
Per earlier question, has a docking mechanism failure happened on the Russian segment during the ISS program?
A few minutes ago, NASA TV was showing a replay of some downlink of a piece of a "gear mechanism" with "two broken teeth."
Did you manage to capture some screenshots? Missed it as I was more focused on the comms.
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#537
by
Space Pete
on 24 Sep, 2010 04:23
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A few minutes ago, NASA TV was showing a replay of some downlink of a piece of a "gear mechanism" with "two broken teeth."
I think that was the hatch latching mechanism on MRM-2. A tool (with teeth) is inserted into the gear socket & rotated to latch/unlatch the hatch. If the teeth are broken on the socket, then it'll make latching the hatch more difficult.
Bummer for the TMA-18 crew though - they said their goodbyes, packed up their stuff, and mentally left the ISS and started to think about Earth. Now they've gotta unpack and go though the whole cycle again.
What is it with this increment anyway? Ever since TMA-19 arrived, it’s just been problem after problem! We didn't really expect Tracy to get away without incident, did we?
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#538
by
PahTo
on 24 Sep, 2010 04:57
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Next undock attempt set for 01:59 GMT tomorrow if I heard correctly.
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#539
by
GoForTLI
on 24 Sep, 2010 05:01
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