Author Topic: Expedition 24 thread (June 2 - September 24, 2010) - Includes ETCS Updates  (Read 181638 times)

Offline DaveS

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MCC-M is going to have Fyodor listen again for any mechanical motion of the MRM-2 latches.
"For Sardines, space is no problem!"
-1996 Astronaut class slogan

"We're rolling in the wrong direction but for the right reasons"
-USA engineer about the rollback of Discovery prior to the STS-114 Return To Flight mission

Offline PahTo

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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!

Online Chris Bergin

Can they scrub the undocking and try again tomorrow, or will it take several days for another attempt?

Offline PahTo

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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...

Offline PahTo

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Undocking set for 04:40 GMT.

Re-opening MRM-2 side.

Offline JimO

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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.


Offline DaveS

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Still standing by for word from the RS FCT.
"For Sardines, space is no problem!"
-1996 Astronaut class slogan

"We're rolling in the wrong direction but for the right reasons"
-USA engineer about the rollback of Discovery prior to the STS-114 Return To Flight mission

Offline DaveS

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Maneuver to undock attitude canceled.
"For Sardines, space is no problem!"
-1996 Astronaut class slogan

"We're rolling in the wrong direction but for the right reasons"
-USA engineer about the rollback of Discovery prior to the STS-114 Return To Flight mission

Offline psloss

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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."

Offline psloss

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Decision is to wave off undocking and landing for the night.

Offline DaveS

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Undocking have been canceled.
"For Sardines, space is no problem!"
-1996 Astronaut class slogan

"We're rolling in the wrong direction but for the right reasons"
-USA engineer about the rollback of Discovery prior to the STS-114 Return To Flight mission

Online Chris Bergin

Yep, cancelled at least 24 hours. Not good on the broken teeth note!

Offline DaveS

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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.
"For Sardines, space is no problem!"
-1996 Astronaut class slogan

"We're rolling in the wrong direction but for the right reasons"
-USA engineer about the rollback of Discovery prior to the STS-114 Return To Flight mission

Offline psloss

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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.

Offline GoForTLI

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There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another theory which states that this has already happened. -- Douglas Adams

Offline PahTo

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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.

Offline Space Pete

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? :D
« Last Edit: 09/24/2010 04:24 AM by Space Pete »
Electronic Engineer by day, NASASpaceflight's ISS Editor by night | Read my NASASpaceflight articles here

Offline PahTo

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Next undock attempt set for 01:59 GMT tomorrow if I heard correctly.

Offline GoForTLI

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There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another theory which states that this has already happened. -- Douglas Adams

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