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  STS-120: Tear in solar array (Page 2)

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Author Topic:   STS-120: Tear in solar array
Robert Pearlman
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posted 11-03-2007 06:31 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
Tani has begun moving the station's robotic arm with the orbiter boom and spacewalker Scott Parazynski in tow, translating toward the site of the damaged array.

Robert Pearlman
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posted 11-03-2007 06:41 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by fireflyer21:
Those in the southeastern US should get a good visual pass of the station/shuttle in the next 15 minutes, around 6:40 am central.
Saw it! Really impressive, especially when you consider what is going on in space at the moment its passing overhead...

Robert Pearlman
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posted 11-03-2007 06:44 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
The view from Discovery's payload bay...

Parazynski reporting tremendous views from his perspective. "Words can't do it justice... at least not mine," he said.

Robert Pearlman
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posted 11-03-2007 06:51 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote

And the view from Parazynski's helmet cam...

Robert Pearlman
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posted 11-03-2007 06:59 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote

NavySpaceFan
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posted 11-03-2007 06:59 AM     Click Here to See the Profile for NavySpaceFan   Click Here to Email NavySpaceFan     Edit/Delete Message   Reply w/Quote
I hope the pics he's taking turn out. Amazing!!!!

fireflyer21
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posted 11-03-2007 07:00 AM     Click Here to See the Profile for fireflyer21   Click Here to Email fireflyer21     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Robert Pearlman:
Saw it! Really impressive, especially when you consider what is going on in space at the moment its passing overhead...
I saw it for about 30 seconds. Not the longest pass ever, but I agree that it was extra special.

Those helmet cam views are amazing!

Chris

Robert Pearlman
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posted 11-03-2007 07:02 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
First view of the solar array...

NavySpaceFan
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posted 11-03-2007 07:11 AM     Click Here to See the Profile for NavySpaceFan   Click Here to Email NavySpaceFan     Edit/Delete Message   Reply w/Quote
Did I hear that right? Did COL Melroy call the camera a POS?

Robert Pearlman
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posted 11-03-2007 07:12 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
Upon his first view of the damage site, Parazynski reported that the hinge "runs intact."

"Hinge damage is isolated to the inboard side and extends halfway between the middle guide wire and out to the inboard edge."

Robert Pearlman
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posted 11-03-2007 07:19 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote

Parazynski confirmed that the flat circuit connector, the array's power line, is intact.

"The FCC does look intact, miraculously, at both damage sites."

Robert Pearlman
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posted 11-03-2007 07:21 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by NavySpaceFan:
Did COL Melroy call the camera a POS?
She said WVS = Wireless Video System.

Robert Pearlman
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posted 11-03-2007 07:26 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote

Robert Pearlman
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posted 11-03-2007 07:40 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote

STS-120 commander Pam Melroy summarized Parazynski's report of the damage: "Both hinge wires from the large and the small damage site, the guide wire and one or more grommets all knotted together."

"That appears to be what happened here," replied Parazynski.

"It sounds like you have some surgery to do, Dr. Parazynski," said Melroy.

"I think so. I think the patient is prepped," Parazynski confirmed.

Tani and Stephanie Wilson are now moving Parazynski closer to the array to begin repairs, beginning with the installation of the number 3 cufflink.

NavySpaceFan
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posted 11-03-2007 07:41 AM     Click Here to See the Profile for NavySpaceFan   Click Here to Email NavySpaceFan     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Robert Pearlman:
She said WVS = Wireless Video System.
Just re-wound my TiVo, in reference to the camera, she said: "Put the Papa Oscar Sierra on top the krulac (sp?) bag."

Robert Pearlman
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posted 11-03-2007 07:47 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote

Robert Pearlman
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posted 11-03-2007 07:50 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
Parazynski is now positioned near the first workstation and is preparing to install the first cufflink (no. 3):

Jay Chladek
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posted 11-03-2007 07:53 AM     Click Here to See the Profile for Jay Chladek   Click Here to Email Jay Chladek     Edit/Delete Message   Reply w/Quote
The first cufflink seems to fit, I am impressed.

Robert Pearlman
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posted 11-03-2007 07:56 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote

"Peggy and Zambo, nice handiwork!" radioed Parazynski of Whitson's and Zamka's preparation of the hinge stabilizers, a.k.a. "cufflinks".

"Yeah, that was a really nice job, it took them all day," replied Melroy, "and now they will be out there forever, which is kind of fun."

Robert Pearlman
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posted 11-03-2007 07:58 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote

Robert Pearlman
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posted 11-03-2007 08:02 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote

Robert Pearlman
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posted 11-03-2007 08:05 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote

Robert Pearlman
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posted 11-03-2007 08:10 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
The first cufflink (no. 3, see chart on previous page) is now installed.

Tani is now moving Parazynski closer to the tangled guide wire(s) and grommet(s), where an attempt will be made to clear the snag, if not cut the frayed wire clear.

Jay Chladek
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posted 11-03-2007 08:10 AM     Click Here to See the Profile for Jay Chladek   Click Here to Email Jay Chladek     Edit/Delete Message   Reply w/Quote
I loved Wheel's comment just now:

"Do you need a moist towelette doctor?"

Robert Pearlman
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posted 11-03-2007 08:17 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
"Now, do you see a lot of loose hinge wire kind of curling around there?" asked Melroy.

"I think that's not hinge wire, I think that is the guide wire that has become frayed. It's almost like it's been stripped," replied Parazynski.

"Oh, wow!" Melroy exclaimed. "That's really frayed."

Robert Pearlman
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posted 11-03-2007 08:21 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote

Robert Pearlman
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posted 11-03-2007 08:30 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote

Parazynski is preparing to trim one of the frayed hinge wires near the large tear.

Robert Pearlman
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posted 11-03-2007 08:37 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote

Robert Pearlman
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posted 11-03-2007 08:45 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
"Okay, it is cut," reported Parazynski, referring to the hinge wire, "and it's really slick. The grommet is retaining the hinge wire. The panel did fold back as we anticipated. No contact with me. There is about 8 inches remaining outside of the hinge doubler and it's pointed up towards me, so I have really easy access to it with my vice grips."

Robert Pearlman
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posted 11-03-2007 08:48 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote

With the hinge wire cleared, Parazynski has now turned his focus to cutting a snagged guide wire.

Robert Pearlman
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"Houston, do we have a go to cut the guide wire?" radioed Melroy.

"Discovery, you have a go to cut the guide wire," replied capcom Steve Swanson.

"A bit of a reach here," Parazynski said while attempting to cut the wire.

"That's what those monkey arms are for," replied Melroy, referring to Scott "Longbow" Parazynski's long arms. "Not too many people in the [astronaut] office could do what you are doing today, Scott."

"3, 2, 1, snip," reported Parazynski.

"Okay, it's retracting," said Wheelock, "nicely done."

Robert Pearlman
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posted 11-03-2007 09:20 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
After cutting the guide wire, Parazynski summarized the status of the snag:

"We have a segment of about 15 inches of guide wire with two hinge wire segments still attached to it. Obviously, the first one we have already cut out, so there is a grommet with perhaps four to five inches of hinge pin associated with it. Below that is a significant fray of wire, several jumbled pieces of wire, so it's not going anywhere off of that side of it."

"At the small damage site, the guide wire is still trapped in the grommet with a fray. I could try to work it out with vice grips and the hockey stick and see if I could free it, that would be my next best choice, or I could just trim the pieces off of this grommet, but I think we are done here."

Flight controllers responded that trimming was the way to go.

"It will look good in a shadow box someday," joked Parazynski, referring to the wires. "Okay, will do!"

With the trimming complete, Parazynski proceeded with installing the second cufflink.

Robert Pearlman
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posted 11-03-2007 09:25 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote

Robert Pearlman
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posted 11-03-2007 09:28 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
Four hours and 24 minutes into today's spacewalk, Parazynski has installed two (numbers 3 and 1) of the five cufflinks, and is now proceeding with the shorter no. 2 cufflink installation.

Robert Pearlman
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posted 11-03-2007 09:36 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
Cufflink no. 2 is now installed.

Robert Pearlman
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posted 11-03-2007 09:38 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
Three down, two to go: next cufflink in work...

Robert Pearlman
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posted 11-03-2007 09:43 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote

Robert Pearlman
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posted 11-03-2007 09:48 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
Four cufflinks installed, one to go, and then the array will be deployed...

Robert Pearlman
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posted 11-03-2007 09:55 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
All five cufflinks installed!

Robert Pearlman
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posted 11-03-2007 09:57 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote


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