Author Topic: LIVE: STS-120 Flight Day 9 - Transfers, EVA-4 Prep, Continuing Array/SARJ Evaluations  (Read 61602 times)

Offline generic_handle_42

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Seems Dan Tani is a pirate!
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Offline ckiki lwai

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Dan is also joining the Halloween party!
Don't ever become a pessimist... a pessimist is correct oftener than an optimist, but an optimist has more fun, and neither can stop the march of events. - Robert Heinlein

Offline TrueBlueWitt

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The only reason I can think of for removing one EVA is to give the spacewalkers more time to run through simulations and planning for the Repairs on the Solar Array.  If the plan is available tomorrow, they'll want to spend as much time as possible reviewing it. This is more complicated than SARJ inspection... and they have had ZERO tank time.

Offline Chris Bergin

Quote
TrueBlueWitt - 31/10/2007  5:46 PM

The only reason I can think of for removing one EVA is to give the spacewalkers more time to run through simulations and planning for the Repairs on the Solar Array.  If the plan is available tomorrow, they'll want to spend as much time as possible reviewing it. This is more complicated than SARJ inspection... and they have had ZERO tank time.

That is exactly what the idea is. They are still working this plan out, have to write it down as a proceedure, discuss it, go to the crew when it's set etc.etc.
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Offline uko

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omg.. they are still using floppy drives on orbit :O
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Offline psloss

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Norm Hartnett - 31/10/2007  12:35 PM

I had forgotten EVA consumables, that may be the limiting factor. EVA4 was planned as a short one and EVA5 was a full one plus they need consumables for the stage.

The OBSS shouldn’t be an issue since 5 EVAs were planned in any case.

Campout time shouldn’t be an issue since they still have up to two days on Discovery if necessary.

Priorities are one thing and good planning is another, this is looking almost panicky.
Up until the problem with the 4B array, they were planning on doing a full EVA-4 starboard SARJ inspection and the "stage EVA" to configure PMA-2 for its move to Node 2 as EVA-5, so I'm not sure that consumables are limiting, either.

I think the big issue downstream remains getting the 1E flight off in December with the short launch window.  If that flight were to slip into the New Year, that would seem to slacken the 10A stage schedule a little; however there must be consequences from that which make protecting that window such a priority.

Offline JimO

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To raise another half-baked idea again, what are the showstoppers arguing against a third EVA crewmember?

It worked on STS-49, as I recall. It really was needed then, too.

Offline generic_handle_42

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uko - 31/10/2007  12:53 PM

omg.. they are still using floppy drives on orbit :O

Hey, if they work then why change?
-Nick-

Offline Norm Hartnett

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Training time makes sense if the same EVA crew is going out on both EVAs. Fatigue would also be a factor in this case.

One thing that this plan does give is more time for internal outfitting for Node 2 get ahead but that has to be limited since much of that was done already.
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Offline ETEE

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Shame they can't swap SARJs from port to starboard and look at replacing or repairing P6 SAW & SARJ on a future mission
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Offline Kel

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Ronsmytheiii - 31/10/2007  11:26 AM

Quote
rdale - 31/10/2007  12:24 PM

OBSS will still be there on Saturday... He's saying since we already pushed EVA5's tasks to the stage, why not use EVA4 tomorrow for SARJ, then EVA5 on Saturday dedicated to SAW with the OBSS.

Not enough time for a campout for a full eva.

They could still do the "old" bike protocol instead of campout if necessary. But, as someone else mentioned, EVA consumables are most likely an issue.

Offline Kel

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ETEE - 31/10/2007  11:56 AM

Shame they can't swap SARJs from port to starboard and look at replacing or repairing P6 SAW & SARJ on a future mission

Or move P6 to starboard and start up the port SARJ....

Offline ckiki lwai

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Kel - 31/10/2007  6:00 PM

Quote
ETEE - 31/10/2007  11:56 AM

Shame they can't swap SARJs from port to starboard and look at replacing or repairing P6 SAW & SARJ on a future mission

Or move P6 to starboard and start up the port SARJ....
And refold it and deploy it a third time  ;)
Don't ever become a pessimist... a pessimist is correct oftener than an optimist, but an optimist has more fun, and neither can stop the march of events. - Robert Heinlein

Offline Felix

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Offline JesseD

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mwa hah haa!!

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Online DwightM

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JimO - 31/10/2007  8:54 AM

To raise another half-baked idea again, what are the showstoppers arguing against a third EVA crewmember?

It worked on STS-49, as I recall. It really was needed then, too.

Can they fit 3 people in the crew lock?

Offline nathan.moeller

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DwightM - 31/10/2007  12:13 PM

Quote
JimO - 31/10/2007  8:54 AM

To raise another half-baked idea again, what are the showstoppers arguing against a third EVA crewmember?

It worked on STS-49, as I recall. It really was needed then, too.

Can they fit 3 people in the crew lock?

They did it on STS-49 somehow.  But that was the shuttle airlock, not Quest's crewlock.  But what would the third EVA be doing?
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Offline Jim

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DwightM - 31/10/2007  1:13 PM

Quote
JimO - 31/10/2007  8:54 AM

To raise another half-baked idea again, what are the showstoppers arguing against a third EVA crewmember?

It worked on STS-49, as I recall. It really was needed then, too.

Can they fit 3 people in the crew lock?

ItSame size as the shuttle's because it is based on  the shuttle's airlock

Offline MKremer

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nathan.moeller - 31/10/2007  12:19 PM

Quote
DwightM - 31/10/2007  12:13 PM

Quote
JimO - 31/10/2007  8:54 AM

To raise another half-baked idea again, what are the showstoppers arguing against a third EVA crewmember?

It worked on STS-49, as I recall. It really was needed then, too.

Can they fit 3 people in the crew lock?

They did it on STS-49 somehow.  But that was the shuttle airlock, not Quest's crewlock.  But what would the third EVA be doing?

Quest can't fit 3. Not to mention it doesn't have the hardware or umbilicals to handle 3 EMUs at once.

Offline Jim

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MKremer - 31/10/2007  1:23 PM

Quote
nathan.moeller - 31/10/2007  12:19 PM

Quote
DwightM - 31/10/2007  12:13 PM

Quote
JimO - 31/10/2007  8:54 AM

To raise another half-baked idea again, what are the showstoppers arguing against a third EVA crewmember?

It worked on STS-49, as I recall. It really was needed then, too.

Can they fit 3 people in the crew lock?

They did it on STS-49 somehow.  But that was the shuttle airlock, not Quest's crewlock.  But what would the third EVA be doing?

Quest can't fit 3. Not to mention it doesn't have the hardware or umbilicals to handle 3 EMUs at once.

Umbilicals weren't used on STS-49 for the 3rd EV.  If there are 3 EMU's, then it is possible.  See my previous post about room

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