Author Topic: LIVE: STS-120 Flight Day 9 - Transfers, EVA-4 Prep, Continuing Array/SARJ Evaluations (Read 61608 times)

punkboi · « **Reply #20 on:** 10/31/2007 07:14 am »

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nathan.moeller - 30/10/2007 11:16 PM
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generic_handle_42 - 31/10/2007 12:49 AM Nice shot of two of the SAWs.
Indeed. You can't even see the tear.

Are you sure that's not the 2B SAW that was being shown? :bleh:

PR event with the Italian Space Agency currently taking place:

triddirt · « **Reply #21 on:** 10/31/2007 07:49 am »

From the Execute Package.

triddirt · « **Reply #22 on:** 10/31/2007 07:53 am »

Nice shot with terminator and the beautiful ISS

ckiki lwai · « **Reply #23 on:** 10/31/2007 09:15 am »

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triddirt - 31/10/2007 9:49 AM

From the Execute Package.

:laugh:

I hope the press won't find this one :laugh:

triddirt · « **Reply #24 on:** 10/31/2007 09:39 am »

Getting Busy in Harmony.. It's already starting to look lived in

triddirt · « **Reply #25 on:** 10/31/2007 09:49 am »

Photo Op for the MCC Team

ckiki lwai · « **Reply #26 on:** 10/31/2007 10:21 am »

PAO mentioned that the tear is 2,5 foot long!
It didn't look that big on the pictures.

Andy_Small · « **Reply #27 on:** 10/31/2007 10:50 am »

Loved the comm check from Clay!

Andy_Small · « **Reply #28 on:** 10/31/2007 10:52 am »

PAO Event starting from US Lab

All crew members

ckiki lwai · « **Reply #29 on:** 10/31/2007 10:53 am »

Scott says guide wire seemed to be intact

edit: He also says a few feet from the bottom the array is reachable

Andy_Small · « **Reply #30 on:** 10/31/2007 10:58 am »

asking Pam about the SAW. If there was anything diffrent they could do

Pam says the sun made it hard to see. But they aborted when they saw it

ckiki lwai · « **Reply #31 on:** 10/31/2007 11:02 am »

Pambo: We were blinded by the sun [...] we stopped only a couple bays before [...] and after the sun was gone we saw the tear and aborted so it must have happened fairly quickly

edited after seeing it another time

ETEE · « **Reply #32 on:** 10/31/2007 11:45 am »

Nearly 45 minute PAO event went very smoothly. The only crew members who didn't speak were Anderson and Wilson.

Kel · « **Reply #33 on:** 10/31/2007 11:56 am »

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generic_handle_42 - 31/10/2007 1:09 AM

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jbk024 - 31/10/2007 1:57 AM

Thanks Nick - I was familiar with ergometer, but wasn't sure how much of a constraint a 65 rpm limit represented. Any idea on the normal non-constrained rate?

I think the rate is only limited by how fast you can pedal. But a quick google search revealed a presentation from some of the microgravity research missions containing a reference to 2-3 hertz. Some quick math turned that into ~115-173 rpm, which puts you at a constrained state of ~40-50% of the normal rate.

This was the presentation I found: http://www.lerc.nasa.gov/WWW/MMAP/PIMS/MEIT/MEIT_pdfs/Section_9.pdf

Search for the word "ergometer".

Also, anyone with greater knowledge of the ergometer could tell me if I'm on the right track.

Not even Lance Armstrong could crank bike pedals at 173 revolutions per minute

65 rpm is relatively slow (most cyclists are in the 80-100 rpm range). The Hz limitations would refer to the resistance being applied by the ergometer (similar to gears on a regular bike) combined with the rate. So, the exercise contraints for the bike ergometer on the shuttle are to pedal slow and easy.

ckiki lwai · « **Reply #34 on:** 10/31/2007 12:15 pm »

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Kel - 31/10/2007 1:56 PM

Not even Lance Armstrong could crank bike pedals at 173 revolutions per minute

That's a bit more then 2 revolutions a second, it depends on how tough it is to do a revolution, but looks doable

Chris Bergin · « **Reply #35 on:** 10/31/2007 12:31 pm »

MMT working very strongly on the Array. We're starting to get the MMT presentations (on L2) but will write it all up into an article.

Also working a lot on the MMOD strike.

Nice image:

Lee Jay · « **Reply #36 on:** 10/31/2007 12:31 pm »

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ckiki lwai - 31/10/2007 7:15 AM

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Kel - 31/10/2007 1:56 PM

Not even Lance Armstrong could crank bike pedals at 173 revolutions per minute

That's a bit more then 2 revolutions a second, it depends on how tough it is to do a revolution, but looks doable

3 revs/sec = 180RPM. My personal spin-out speed is around 110 RPM, and most sprinters top out around 130 RPM or so. I seriously doubt any human can spin at 3 Hz (180 RPM), and even if they could they'd produce no torque in the process.

When Lance is spinning like crazy on those climbs and time trials (spinning faster than everyone else in the group), he's usually around 105 RPM. Most people exercise around 65-85 RPM. Certainly no astronauts are going to be spinning anywhere near 180 RPM.

SimonFD · « **Reply #37 on:** 10/31/2007 12:32 pm »

I know 20-20 hindsight is wonderful but you'd think, given the trouble they had putting the array back in its box previously, they would have waited until they could see properly before extending the last half!
The fact that they proceeded without visibilty seems very strange when all other activities are planned and scripted down to the minutest detail.

Ah well...Let's hope they can unhitch the (seemingly) caught cable and all will be ok.

(unwanted images of SkyLab keep flashing in my head!)

Chandonn · « **Reply #38 on:** 10/31/2007 12:41 pm »

CNN is reporting there are now 2 rips in the array. I thought we were still counting 1?

stockman · « **Reply #39 on:** 10/31/2007 12:43 pm »

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Chandonn - 31/10/2007 9:41 AM

CNN is reporting there are now 2 rips in the array. I thought we were still counting 1?

there are two. The big one that is very noticable and just to one side of it on another fold there is a small one. There is a good high res photo of that somewhere on this site that maybe someone can copy over.

..

sorry, the photo is on L2