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#140
by
ChrisC
on 03 Apr, 2009 03:17
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I riffed who now?
(bows to Chris B and Chris G)
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#141
by
ChrisGebhardt
on 03 Apr, 2009 03:20
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Pre-empting Hubble: MOD reviews STS-125/400 requirements
http://www.nasaspaceflight.com/2009/04/pre-empting-hubble-mod-reviews-sts-125400-requirements/ - By Chris Gebhardt
I'll start a FRR article specific thread shortly.
Great article Chris G. Between you and Chris C, it's almost like a DJ session of well laid down rifs.
From the article:
"Furthermore, should STS-125 incur multiple delays, resulting in a night time launch, ET photography will be satisfied through the use of Atlantis’ ET Umbilical Well camera and associated flash system."
Would they wait for results on why the camera system failed on STS-119 before moving forward with a night launch? There could be an underlying issue that requires attention.
Thanks.
And for the camera, I would say that ET photography is not a mandatory aspect of the mission. It helps for ET foam loss data compilation, but remember that the thruster firings during ET separation illuminate the tank as well. I would not think that NASA would delay a mission because the camera flash didn't work (unless it was a larger issue regarding wiring). Also, remember that they didn't have the flash installed during STS-116. The first time it was used was during STS-123 last year.
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#142
by
DaveS
on 03 Apr, 2009 04:17
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Well, the problem on 119 was that neither the flash or download worked! They couldn't get any ET umbilical well photos. T/S in the OPF have confirmed this.
So even to this day, nobody has seen those umbilical well photos!
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#143
by
AnalogMan
on 03 Apr, 2009 16:37
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Today's latest update on NASA website:
Hubble Space Telescope engineers from NASA's Goddard Space Flight Center had a busy week at the Kennedy Space Center preparing SM4 hardware for its ride to orbit on board the Space Shuttle Atlantis. The replacement Science Instrument Command and Data Handling (SIC&DH) unit arrived on Monday. It was integrated onto the Multi-use Logistics Equipment (MULE) carrier.
The spacewalking flight crew arrived on Wednesday for two days of hardware familiarization activities with Goddard engineers in the Payload Hazardous Systems Facility (PHSF). They examined tool stowage locations, inspected interfaces, and practiced spacewalking procedures with flight tools.
They also had an opportunity to participate in the SIC&DH integration activities, something they will have to do on-orbit as part of the SIC&DH replacement task on SM4. The engineers also had an opportunity to see Atlantis arrive back at launch complex 39A. The Hubble payload is scheduled to be loaded into Atlantis on April 19.http://www.nasa.gov/mission_pages/hubble/servicing/SM4/news/Crew_fam_KSC_042009.htmlAnd photo below:
SM4 spacewalking astronaut Andrew Feustel, wearing EVA suit gloves and using the Pistol Grip Tool, practices installing the replacement SIC&DH in the PHSF during the last crew familiarization activity for SM4
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#144
by
Alpha Control
on 03 Apr, 2009 18:11
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Pre-empting Hubble: MOD reviews STS-125/400 requirements
http://www.nasaspaceflight.com/2009/04/pre-empting-hubble-mod-reviews-sts-125400-requirements/ - By Chris Gebhardt
I'll start a FRR article specific thread shortly.
Very fine article, Chris G. It answered my question about whether or not the HST tasks would be performed anyway if severe TPS damage is found on FD-2. They would go straight into the power down mode.
One question: If the worst case happens, and we have to launch STS-400 and then send Atlantis on a destructive rentry, is there any desire or plan to aquire some engineering data during her reentry that might be useful? Max temps, pressures, and such (I'm not on L2 currently so if there has been talk about it there I won't have seen it).
It may sound too "clinical", regarding what will surely be a sad day, but I was thinking that it could be her last act for science (if it's even possible).
Thanks,
David
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#145
by
violin1238
on 03 Apr, 2009 18:54
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I have a question about the vehicle at launch pad 39a as of now. I have a concern about the Composite Overwrap Pressure Vessels in Atlantis. I hear that Orbiter Atlantis has the Oldest fuel cells of the three orbiters and I am just posing a concern because I'm sure many would not want Atlantis to have her fuel cells burst on a mission assent of 300 nautical miles as opposed to flying to lower orbit of ISS.
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#146
by
rdale
on 03 Apr, 2009 19:02
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There's nothing to worry about, I'd suggest a quick reading of many of the articles on the homepage here.
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#147
by
ChrisGebhardt
on 03 Apr, 2009 19:49
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Pre-empting Hubble: MOD reviews STS-125/400 requirements
http://www.nasaspaceflight.com/2009/04/pre-empting-hubble-mod-reviews-sts-125400-requirements/ - By Chris Gebhardt
I'll start a FRR article specific thread shortly.
Very fine article, Chris G. It answered my question about whether or not the HST tasks would be performed anyway if severe TPS damage is found on FD-2. They would go straight into the power down mode.
One question: If the worst case happens, and we have to launch STS-400 and then send Atlantis on a destructive rentry, is there any desire or plan to aquire some engineering data during her reentry that might be useful? Max temps, pressures, and such (I'm not on L2 currently so if there has been talk about it there I won't have seen it).
It may sound too "clinical", regarding what will surely be a sad day, but I was thinking that it could be her last act for science (if it's even possible).
Thanks,
David
Thanks, David.
And I haven't seen anything on L2 about gaining science data during the potential destructive reentry. That doesn't mean it's not on the drawing board, but I would assume that this would be the last thing on the teams' minds if that situation were to actually become a reality.
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#148
by
nathan.moeller
on 03 Apr, 2009 20:43
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One question: If the worst case happens, and we have to launch STS-400 and then send Atlantis on a destructive rentry, is there any desire or plan to aquire some engineering data during her reentry that might be useful? Max temps, pressures, and such (I'm not on L2 currently so if there has been talk about it there I won't have seen it).
It may sound too "clinical", regarding what will surely be a sad day, but I was thinking that it could be her last act for science (if it's even possible).
Thanks,
David
Seeing as how the entry would be carried out in a destructive, tail-first attitude, there probably wouldn't be much to find out. Plus, most of what they want to know about TPS on the orbiters is already known. The main goal throughout all of this would be to get the STS-125 crew home safely.
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#149
by
dave k
on 04 Apr, 2009 00:59
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A 3d anaglyph of STS-125 after roll out so you will need a pair red/blue glasses to view this. I put this together from a couple of images on the KSC website.
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#150
by
Chris Bergin
on 05 Apr, 2009 07:12
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#151
by
Davejfb
on 05 Apr, 2009 08:03
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#152
by
Chris Bergin
on 05 Apr, 2009 14:41
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#153
by
Davejfb
on 05 Apr, 2009 16:03
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Processing update via L2:
http://www.nasaspaceflight.com/2009/04/processing-on-track-as-mission-heads-to-frr-sims/
Thank you Chris for this update.
A question for you. In your article you used a picture of the harware in the payload bay. Do you have this bigger? Or can i found it on L2? If so do you have a link for me?
Thanks!
It's one of several payload drawings on the MOD FRR presentations for STS-125 (L2 link:)
http://forum.nasaspaceflight.com/index.php?action=tags&tags=STS-125|MOD%20FRR - this one being in the STS-125: MOD FRR: Mission Overview Presentation (Flight Director).
PDFs, so you can blow the images up to very large sizes, but I'll add a bigger one in the thread anyway:
Thanks Chris! Keep up the great work here on the best website there is what has to do with space.
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#154
by
Jason Davies
on 05 Apr, 2009 16:54
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Thanks Chris! Keep up the great work here on the best website there is what has to do with space.
Seconded!
Great roundup article.
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#155
by
Chris Bergin
on 05 Apr, 2009 21:25
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Thanks
Although we're a space
flight site. Space.com is the monster when it comes to space in general. I think we're the only one that a specific to the vehicles and hardware.
Anyway, I digest
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#156
by
robertross
on 05 Apr, 2009 23:00
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I riffed who now?
(bows to Chris B and Chris G)
Yeah, my bad. Corrected that. Sorry guys.
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#157
by
robertross
on 05 Apr, 2009 23:07
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#158
by
SM4_Engineer
on 05 Apr, 2009 23:46
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Pre-empting Hubble: MOD reviews STS-125/400 requirements
http://www.nasaspaceflight.com/2009/04/pre-empting-hubble-mod-reviews-sts-125400-requirements/ - By Chris Gebhardt
I'll start a FRR article specific thread shortly.
Wow, very insightful article! They have really thought through everything carefully. One question that someone may know the answer to is the "group C" powerdown? What parts are involved with that, and what are the other groups (assuming at least an A and B)?
Group C+ powerdown assumes that you start in Group B powerdown and shuts down all possible remaining loads such as fans, lights, transmitters, and really important items such as RCS/OMS heaters.
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#159
by
Ronsmytheiii
on 06 Apr, 2009 20:44
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