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#420
by
mkirk
on 20 Aug, 2009 17:07
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what's the ascent witch list performed at T-11H & hold???
There are several different switch lists performed during the countdown but the Ascent Switch List is performed by the ASP/Cape Crusader folks during the T-11 Hold. Additional Pre-Ingress Switch Verifications are performed during the T-3 Hour Hold and then the ASP will do some Post Ingress Switch adjustements after the crew is on-board in order to get some of the hard to reach switches.
To answer your question "what is it"? This checklist pretty much verifys that every switch, knob, light, & display located in the flight and mid-decks of the spacecraft are in the proper configuration for hand-over to the astronaut flight crew during ingress.
Mark Kirkman
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#421
by
C5C6
on 20 Aug, 2009 17:45
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ty mr kirkman!!!!!!
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#422
by
elmarko
on 21 Aug, 2009 09:03
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This is an odd one but does anyone know where I can find a diagram of the first few orbits of an ISS flight after launch?
I have a few people on another forum asking about it, people wanted to try snagging the UHF comms with their scanners.
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#423
by
GLS
on 21 Aug, 2009 09:45
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This is an odd one but does anyone know where I can find a diagram of the first few orbits of an ISS flight after launch?
I have a few people on another forum asking about it, people wanted to try snagging the UHF comms with their scanners.
TLEs for ISS and Shuttle:
http://spaceflight.nasa.gov/realdata/elements/index.htmljust look at the time and choose the right TLE data.
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#424
by
elmarko
on 21 Aug, 2009 09:47
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I wanted something that required as little work as possible, but thanks I guess :p
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#425
by
GLS
on 21 Aug, 2009 09:53
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maybe getting a satellite tracking program (orbitron comes to mind) and then update the TLEs a couple of times per day.... don't know if celestrak updates shuttle TLEs after they do a burn...
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#426
by
elmarko
on 21 Aug, 2009 09:58
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Aye, I might have a go.
I thought maybe there were some diagrams from any books on ascent guidance or stuff like that.
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#427
by
Hobbs
on 21 Aug, 2009 12:34
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I was wondering if theres an in-depth guide or handbook pertaining to shuttle fuelling and replenishment etc anywhere? Ive been looking everywhere on NSF but have had no luck so far, sporadic Q&A posts are good but dont tend to give you the "complete" picture
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#428
by
padrat
on 21 Aug, 2009 17:03
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What are you looking for? Which fueling? There's a few different types (Hyper, LH2/LOX, PRSD loading) On L2 a while back I made a picture thread on the GSE side of the PRSD system, which services the fuel cells. I'm thinking about making a similar thread on the LH2 system here soon. It would be on L2 of course, due to the high res pics.
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#429
by
Hobbs
on 21 Aug, 2009 23:51
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Ahh sorry that last post was pretty ambiguous looking at it now, what I was after was some detailed documentation/pictures of shuttle ET fuelling and the ground to shuttle interface(TSM, GUCP, beanie cap) so perhaps that would be the ET console handbook and also the ground cryo systems handbook (if such a document exists) mainly interested in just anything to do with the MPS LH2/LOX side of things but also anything else like hypergols etc would be really interesting too.
also having a look for those pictures now padrat..
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#430
by
billshap
on 22 Aug, 2009 07:45
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If the Apollo program could transmit live TV via S-band, why can't the Shuttle? When Ku is unavailable, the Shuttle is limited to sequential stills. If Apollo could send TV via S-band, what changed that the Shuttle cannot?
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#431
by
Jorge
on 22 Aug, 2009 07:54
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If the Apollo program could transmit live TV via S-band, why can't the Shuttle? When Ku is unavailable, the Shuttle is limited to sequential stills. If Apollo could send TV via S-band, what changed that the Shuttle cannot?
It is not S vs Ku band, it is omni vs steerable. The steerable antennas on both spacecraft provide more bandwidth. Apollo had steerable S-band plus omni S-band, shuttle has steerable Ku band and omni S-band. Neither Apollo nor the shuttle could transmit TV using the omni antennas, only the steerable ones.
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#432
by
Davidgojr
on 22 Aug, 2009 19:07
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Why are built in holds of known durations added to the countdown? Why not simply have a countdown of longer duration that includes the holds without stopping the clock?
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#433
by
Jorge
on 22 Aug, 2009 19:18
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Why are built in holds of known durations added to the countdown? Why not simply have a countdown of longer duration that includes the holds without stopping the clock?
Answered previously, do a search.
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#434
by
Jim
on 22 Aug, 2009 20:42
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Why are built in holds of known durations added to the countdown? Why not simply have a countdown of longer duration that includes the holds without stopping the clock?
This is not shuttle unique but common to all launch vehicles.
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#435
by
dcbecker
on 23 Aug, 2009 15:41
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#436
by
Danny Dot
on 23 Aug, 2009 18:35
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Is there a place to look at time to launch assuming the holds all go as planned? If NASA doesn't have one, it would be trivial to build and add to nasa.gov.
Danny Deger
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#437
by
Jim
on 23 Aug, 2009 21:20
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#438
by
Danny Dot
on 25 Aug, 2009 00:49
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OK, can some quickly post the planned holds?
Danny Deger
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#439
by
wizard
on 25 Aug, 2009 01:24
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Is this what you're looking for?
9:41 pm Countdown resumes at the T-3 hour mark
12:21 am Countdown enters a 10-minute hold at the T-20 minute mark
12:31 am Countdown resumes at the T-20 minute mark
12:42 am Countdown enters an ~45-min. hold at the T-9 minute mark
1:27:05 am Countdown resumes at the T-9 minute mark
?
?