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#260 by elmarko on 15 Jun, 2007 19:32
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I'll put this question here because it's related to the Ku video and comms. When they say TDRS-W and TDRS-E, are they talking about 2 individual sats? According to my quick google search there are 8 satellites named A to H, and of course B was lost in STS-51L. So I'm puzzled.
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#261 by Zachstar on 15 Jun, 2007 19:32
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Continue
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#262 by sts1canada on 15 Jun, 2007 19:34
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Just a heads up, the KU should last on TDRS-Z until the time of sunrise as have I posted above, then we should have a small period of NO KU and then KU on TDRS-West, that is if I am reading the KU comm summary in the FD 8 package right.
16 minutes to sunrise, in TDRS-West coverage for another 53 minutes, should have TDRS-West KU in 20 - 25 minutes when this KU pass ends soon.
Richard
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#263 by Zachstar on 15 Jun, 2007 19:34
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Danny is doing great!
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#264 by Jeff Lerner on 15 Jun, 2007 19:34
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I can understand why Danny is so quiet...there is all that data in how fragile the tiles are...he' working very close them trying to pin blabkets togethr, not pierce his suit gloves and not damage any tiles....I'd be quiet also...really focused on what I was doing...
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#265 by Zachstar on 15 Jun, 2007 19:36
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Another done on to the next!
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#266 by Zachstar on 15 Jun, 2007 19:37
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Using the "Punch Tool" (Dental Elevator)
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#267 by sts1canada on 15 Jun, 2007 19:37
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Quote
elmarko - 15/6/2007 3:32 PM
I'll put this question here because it's related to the Ku video and comms. When they say TDRS-W and TDRS-E, are they talking about 2 individual sats? According to my quick google search there are 8 satellites named A to H, and of course B was lost in STS-51L. So I'm puzzled.
Yes TDRS-West is located over the equator around 170 West longitude over the central Pacific Ocean, TDRS-East is located over the equator around 55 West longitude.
Richard
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#268 by elmarko on 15 Jun, 2007 19:39
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Quote
sts1canada - 15/6/2007 8:37 PM
Quoteelmarko - 15/6/2007 3:32 PM
I'll put this question here because it's related to the Ku video and comms. When they say TDRS-W and TDRS-E, are they talking about 2 individual sats? According to my quick google search there are 8 satellites named A to H, and of course B was lost in STS-51L. So I'm puzzled.
Yes TDRS-West is located over the equator around 170 West longitude over he central Pacific Ocean, TDRS-East is located over the equator around 55 West longitude.
Richard
But I can find no reference to them at all on the Internet. Are they the older satellites but with a different name? -
#269 by charlieb on 15 Jun, 2007 19:40
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TDRS off the nose I betcha (oh that sound on the A/Gs....) - and with minor issues with a lower s-band ant reported - bound to be some data hits especially if that antenna is the active on for TDR-W
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#270 by JWag on 15 Jun, 2007 19:43
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elmarko - 15/6/2007 2:39 PM But I can find no reference to them at all on the Internet. Are the older satellites but with a different name?
http://msp.gsfc.nasa.gov/tdrss/tconst.html
http://msp.gsfc.nasa.gov/tdrss/oview.htmlAnd the "utilization" column here .
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#271 by sts1canada on 15 Jun, 2007 19:43
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Passed out of TDRS-Z KU coverage, now in a period of ratty comm as I talked about earlier, this is normal as the station continues to move SOUTH and east away from TDRS-west which is to its northeast right now, as we "bend around Australia" and start to move north and east again towards TDRS-West, comm and KU coverage will improve, BE PATIENT this pattern will happen EVERY ORBIT! that is why I am calling out times to and out of ZOE, so you all know what to expect for KU.
5 minutes to sunrise, KU will resume sometime after sunrise when the complex is more line-in-sight with TDRS-West.
Richard
Richard -
#272 by broakhekke on 15 Jun, 2007 19:47
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Question: Of what material are these staples made of? wouldn't the staples heat up during re-entry? And would this pose a threat to the thermal blanket or tiles?
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#273 by charlieb on 15 Jun, 2007 19:47
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TDR-E LOS was quite a while ago - I think you meant TDR-Z Richard... If you look at the attitude of the Orbiter - the way the nose is pointing 'up', AND the fact that there are solar arrays there too make me believe strongly that they are possibly interferring with the view of TDR-W at that time. KU - there are zones where it will not be allowed to radiate with the EVA on-going too....
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#274 by sts1canada on 15 Jun, 2007 19:48
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The pattern for KU is simple to follow, moving north and east towards TDRS-West & TDRS-East, KU video coverage is good, moving south and east away from TDRS-West (like right now!) and TDRS-East, bad or NO KU! This pattern repeats itself every orbit.
Less than one minute to sunrise, next orbit will be 110!
Richard
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#275 by charlieb on 15 Jun, 2007 19:49
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Probably surgical stainless steel. NO and NO. Tests confirmed that no probs were expected.
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#276 by Chris Bergin on 15 Jun, 2007 19:49
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Quote
broakhekke - 15/6/2007 8:47 PM
Question: the staples heat up during re-entry? And would this pose a threat to the thermal blanket or tiles?
No, they tested them and wouldn't of done this otherwise. Check the news stories in the first post of this thread as we have pretty much everything covered. -
#277 by Zachstar on 15 Jun, 2007 19:49
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Possible Russian CPU restart in 10 mins!
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#278 by charlieb on 15 Jun, 2007 19:51
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Patterns may repeat, but blockages by either vehicle (orbiter or ISS) will cause the Ku-band to cease transmitting via SM Ops software control - nevermind the additional issue of EVA crewmembers in or very near the cargo bay area. RF hazards you know....
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#279 by sts1canada on 15 Jun, 2007 19:53
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If I read the KU coverage properly, we may get some KU in 10 - 15 minutes as we move northeast more in sight of the TDRS-West.
Now in sunrise, 54 minutes left of sun in this pass until sunset at 4:44 PM EDT (8:44 PM GMT), this TDRS-West pass lasts to 4:24 PM EDT.
Richard