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#20
by
AnalogMan
on 18 May, 2009 10:53
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EVA 5 Summary timeline (my annotations in red). I've checked the timings from today's execute package and there are no changes to the original task durations shown.
Edit: PAO announced a 20min extension to the EVA after I posted this, so reckon on stretching the NOBL task shown from 30mins to 50mins.
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#21
by
MikeMi.
on 18 May, 2009 10:57
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Whats about NOBL 7? This option will be take to consideration if time permits or has it already been dropped?
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#22
by
shaula1247
on 18 May, 2009 10:59
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Just heard a comment from PAO that we now had a 6:05 duration for todays EVA and NOBL7 was still in there on an "if time permits" basis.
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#23
by
tva
on 18 May, 2009 11:01
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A reboost was always planned, until a few weeks ago. It costs nothing. Risk is not a factor. So why not do it?
Could it be the shortage of proppellant ? You need some of it to the de-orbit burn at the end of this mission.
Or may be the structure currently holding the HST in the PB (FSS+SCM) can not endure the loads of the reboost ? The HST has a significant mass and could exercise a great ammount of torque.
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#24
by
psloss
on 18 May, 2009 11:03
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Or may be the structure currently holding the HST in the PB (FSS+SCM) can not endure the loads of the reboost ? The HST has a significant mass and could exercise a great ammount of torque.
The structure is not an issue. This is the same thing used on the past servicing missions, and I think all of them had a reboost.
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#25
by
MikeMi.
on 18 May, 2009 11:05
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Water dump in progress..
Like Fred Haise in "Apollo 13" movie said "Its like a new constellation of urine!"
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#26
by
AnalogMan
on 18 May, 2009 11:08
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Just heard a comment from PAO that we now had a 6:05 duration for todays EVA.
The NOBL 5 task is nominally 30mins, and the original NOBL 8 (dropped yesterday) was 45mins. The extra 20 mins now added to the EVA overall duration still means not all the NOBL 8 task is planned for - but of course if they get ahead of the timeline ....
Edit: And of course there may be significant time savings through shared set-up & tool use.
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#27
by
shaula1247
on 18 May, 2009 11:10
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Yep, we can hope.
Meanwhile, the scene of action awaits although it remains to be rotated to bring the worksite forward. Crew has go ahead to rotate.
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#28
by
psloss
on 18 May, 2009 11:16
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EVA purge in work. Listening to the calls, it sounds like the crew is trying to get out the door early.
From listening to some of the discussion yesterday, it sounded like the "limit" on the EVA was mostly due to making sure the crew got to sleep on-time vs. an EVA duration/consumables issue. (They need to sleep shift to sync with de-orbit at end-of-mission and the timeline is already pushed forward an hour due to the length of EVA-2.) Starting early would give them more EVA time while still allowing the post EVA activities to fit into the schedule.
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#29
by
shaula1247
on 18 May, 2009 11:18
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Preparations seem to be about an hour ahead of the timeline
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#30
by
shaula1247
on 18 May, 2009 11:20
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Crew about ready to commence rotation of the telescope. Unfortunately we have no pictures just now.
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#31
by
Nomadd
on 18 May, 2009 11:26
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With WFC3 being able to work with far shorter exposures than WFPC2 I wonder if they're considereing planning observations to keep the aspect to the direction of travel down to keep drag minimum. With improved gyros there's an excellent chance she'll be just fine in ten years.
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#32
by
shaula1247
on 18 May, 2009 11:28
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Crew has commenced 40 minute prebreathe. Clock started at 22 past
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#33
by
shaula1247
on 18 May, 2009 11:43
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There is now an 8 minute comms gap and this appears to have triggered a mass exodus of the orbit 1 crew. Coffee or comfort I guess
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#34
by
shaula1247
on 18 May, 2009 11:53
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Telescope has been rotated.
Crew also has go to perform the maneuver scheduled for 18:30 early at their convenience.
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#35
by
shaula1247
on 18 May, 2009 12:02
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A period of ratty comm coming up. EVA has been given the goahead to commence depress on time at 1802 if comms are unreliable at that point.
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#36
by
Ronsmytheiii
on 18 May, 2009 12:08
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Go for depress cue card
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#37
by
shaula1247
on 18 May, 2009 12:09
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Confirmation of commencement of depress. Depress has begun.
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#38
by
Ronsmytheiii
on 18 May, 2009 12:12
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5.0, depress valve to off
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#39
by
Ronsmytheiii
on 18 May, 2009 12:14
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Go to depress to zero
