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#1880
by
DansSLK
on 11 May, 2009 09:08
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Hi folks:
I was looking at the photos Chris Gebhardt took at sts-125 open House pics.
I noticed that there are "YELLOW" bars on the payload Bay doors ( they are probably used to assist with opening those doors when a payload needs to go in at the pad).
1) My question is: How are those bars attached, as the payload bay doors are "covered" with a blanket as part of the protection for the heat of re-entry?
also
2) How is the orbiter secured to the crane (in the VAB) to make sure it does not fall during the "flip" and while it it is being attached to the ET?
Thanks
Oxford750
I'm sure these have been answered before but here you go -
1) Not 100% on the attachment method so i won't comment on that, the function is to allow the doors to operate under 1G.
2) The sling attaches to the orbiter with what are basically pins that mate with sockets on the sides of the orbiter, that means they can flip the lady over and still have a good structural attachment because its not supported from below like in a traditional sling, we have pics on here showing the sling attached and so does the KSC media gallery, they should clear it right up for you.
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#1881
by
Jim
on 11 May, 2009 12:01
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#1882
by
MKremer
on 11 May, 2009 16:03
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I'll ask this here because I didn't know where else to put it.
Will 125 have any helmet camera support, or is there no WVS provision when not docked to the ISS?
If there isn't, I presume the live Ku video will be from the payload bay and inside the crew cabin.
There are several UHF antennas at both ends of the payload bay. WVS was used during the last Hubble mission, no reason it wouldn't be available for this mission.
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#1883
by
oxford750
on 11 May, 2009 16:45
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Thanks folks.
oxford750
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#1884
by
SimDaDim
on 11 May, 2009 18:44
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I remember watching a space shuttle mission back in dec.2006, and then i got hold of some sort of a timeline plan for all the astronauts during their mission. I have also heard roumers that there exists som sort of a action plan with all the steps they are going trough, and often you can here they reference to that when watching the live feed.
Anyone know if there exists any sucht for the STS-125 flight, and if it is possible to get hold of it?
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#1885
by
Jim
on 11 May, 2009 18:55
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I remember watching a space shuttle mission back in dec.2006, and then i got hold of some sort of a timeline plan for all the astronauts during their mission. I have also heard roumers that there exists som sort of a action plan with all the steps they are going trough, and often you can here they reference to that when watching the live feed.
Anyone know if there exists any sucht for the STS-125 flight, and if it is possible to get hold of it?
L2
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#1886
by
AnalogMan
on 11 May, 2009 19:00
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I remember watching a space shuttle mission back in dec.2006, and then i got hold of some sort of a timeline plan for all the astronauts during their mission. I have also heard roumers that there exists som sort of a action plan with all the steps they are going trough, and often you can here they reference to that when watching the live feed.
Anyone know if there exists any sucht for the STS-125 flight, and if it is possible to get hold of it?
NASA usually post Flight Data Files for the mission here:
http://www.nasa.gov/centers/johnson/news/flightdatafiles/index.htmlAs I post, these have not been updated from STS-119 yet (they usually are just before actual launch). These are very detailed checklists and have lots of info.
During the mission NASA post daily "Flight Day Execute Packages" which are documents sent to the astronauts prior to the start of each working day. These contain detailed timelines for that day's work as well as any messages updating on procedures, work-arounds etc.
The STS-125 page has not been set up yet but will probably be at a link similar to this:
http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts125/news/execute_packages.htmlThe STS-119 one is still available if you want to see what these documents look like:
http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts119/news/execute_packages.html
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#1887
by
DaveJ576
on 11 May, 2009 20:25
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I seem to remember reading, some years back, that there was discussion of eliminating RTLS and replacing it with an abort mode that had the shuttle landing at an east coast airport or military airfield. I believe that John Young was involved in this study.
1. Which fields were in consideration for this mode?
2. What would have been the difficulties involved?
3. Why wasn't it ultimately adopted?
This seems like a no brainer as it eliminates the element of RTLS that made everyone's hair gray, the supersonic turnaround.
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#1888
by
Jorge
on 11 May, 2009 20:48
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I seem to remember reading, some years back, that there was discussion of eliminating RTLS and replacing it with an abort mode that had the shuttle landing at an east coast airport or military airfield.
The abort is called East Coast Abort Landing (ECAL). It is not, and was never, intended to replace RTLS. RTLS remains the primary intact abort method for single-engine-out prior to first TAL, and for systems aborts prior to Negative Return. ECAL is a contingency abort for multiple engine failures prior to the single-engine TAL boundary on high-inclination missions only. Its intent is to make some previously unsurvivable multiple engine out scenarios survivable.
I believe that John Young was involved in this study.
1. Which fields were in consideration for this mode?
2. What would have been the difficulties involved?
Many of the scenarios result in entry loads well outside the orbiter's structural certification.
3. Why wasn't it ultimately adopted?
It was adopted, just not as a replacement for RTLS.
This seems like a no brainer as it eliminates the element of RTLS that made everyone's hair gray, the supersonic turnaround.
Actually the powered pitcharound (PPA) is not the most dangerous part of an RTLS. It is the powered pitchdown (PPD)/MECO/ET sep/alpha recovery sequence. This sequence occurs very quickly, ET sep occurs much deeper in the atmosphere than nominal and the risk of recontact after sep is fairly high, and alpha recovery can put the orbiter into an "alpha trap" in which loss of control (and subsequent vehicle breakup) are difficult to avoid.
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#1889
by
DaveJ576
on 11 May, 2009 20:55
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Jorge,
Great info! Thanks!
Do you know which airfields are used for ECAL?
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#1890
by
Jorge
on 11 May, 2009 21:12
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#1891
by
oxford750
on 11 May, 2009 23:54
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Hi folks:
This is a very nice site and I am enjoying it alot.
Does anyone know where I can find a photo or graphic that shows where the camera (NOT one from the camera itself)that sits on the ET is placed . I do know that the camera was in a different spot than what it was for iss missions.
Thanks
oxford750
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#1892
by
Lee Jay
on 11 May, 2009 23:57
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Does anyone know where I can find a photo or graphic that shows where the camera (NOT one from the camera itself)that sits on the ET is placed . I do know that the camera was in a different spot than what it was for iss missions.
I thought it was on the LOX feed line like always since return-to-flight.
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#1893
by
psloss
on 12 May, 2009 00:10
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Does anyone know where I can find a photo or graphic that shows where the camera (NOT one from the camera itself)that sits on the ET is placed . I do know that the camera was in a different spot than what it was for iss missions.
I thought it was on the LOX feed line like always since return-to-flight.
You're correct. Same spot as always since RTF.
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#1894
by
Lee Jay
on 12 May, 2009 00:16
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Does anyone know where I can find a photo or graphic that shows where the camera (NOT one from the camera itself)that sits on the ET is placed . I do know that the camera was in a different spot than what it was for iss missions.
I thought it was on the LOX feed line like always since return-to-flight.
You're correct. Same spot as always since RTF.
Thank you. It occurs to me that I may not actually know exactly where that is. Is this red arrow pointing to approximately the right place?
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#1895
by
Jorge
on 12 May, 2009 00:18
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Does anyone know where I can find a photo or graphic that shows where the camera (NOT one from the camera itself)that sits on the ET is placed . I do know that the camera was in a different spot than what it was for iss missions.
I thought it was on the LOX feed line like always since return-to-flight.
You're correct. Same spot as always since RTF.
Thank you. It occurs to me that I may not actually know exactly where that is. Is this red arrow pointing to approximately the right place?
Yes.
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#1896
by
Lee Jay
on 12 May, 2009 01:50
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There's an ET-breakup "video" (looks like 16mm film, perhaps) on L2. How did they get that footage when the ET is normally so far from the orbiter at breakup?
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#1897
by
Jorge
on 12 May, 2009 02:50
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There's an ET-breakup "video" (looks like 16mm film, perhaps) on L2. How did they get that footage when the ET is normally so far from the orbiter at breakup?
I'd bet it was shot from below, not above. Without seeing the video, can't say for sure.
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#1898
by
Lee Jay
on 12 May, 2009 02:53
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There's an ET-breakup "video" (looks like 16mm film, perhaps) on L2. How did they get that footage when the ET is normally so far from the orbiter at breakup?
I'd bet it was shot from below, not above. Without seeing the video, can't say for sure.
It's about 17 minutes into the ASRM video on L2.
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#1899
by
Jorge
on 12 May, 2009 03:39
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There's an ET-breakup "video" (looks like 16mm film, perhaps) on L2. How did they get that footage when the ET is normally so far from the orbiter at breakup?
I'd bet it was shot from below, not above. Without seeing the video, can't say for sure.
It's about 17 minutes into the ASRM video on L2.
Definitely from below. The orbiter's cameras simply cannot track that smoothly.