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Elektron repair attempt fails
Spare parts installed, Elektron still has bubble-trouble,
planned activation for tomorrow now on hold (that 'could happen', Navias says, despite 'chronic problem' of bubbles in the line). Navias assures listeners that 4 months of oxygen is on board the station -- 'no shortage of oxygen on board the station' -- but that's not the issue and he knows it. Without a functioning Elektron, there is no reliable CSCS option for the Discovery crew. |
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Elektron repair attempt fails
"Jim Oberg" wrote:
Spare parts installed, Elektron still has bubble-trouble, planned activation for tomorrow now on hold (that 'could happen', Navias says, despite 'chronic problem' of bubbles in the line). Navias assures listeners that 4 months of oxygen is on board the station -- 'no shortage of oxygen on board the station' This statement reminds me of a thought attributed to a citizen of a nation busily losing WWII - "_____ noted that though his country kept winning battles, the Great Victories were occurring ever closer to home". -- but that's not the issue and he knows it. Without a functioning Elektron, there is no reliable CSCS option for the Discovery crew. In May 2005, it was announced[1] that there was enough O2 for 'safe haven'. What has changed since then? (Or was that report incorrect?) I can't find any past estimates of O2 reserves googling about in this group - though I know they've been posted when discussing Elektron. Are we winning battles ever closer to home? [1] http://groups.google.com/group/sci.s...68a5e40cff 47 D. -- Touch-twice life. Eat. Drink. Laugh. -Resolved: To be more temperate in my postings. Oct 5th, 2004 JDL |
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Elektron repair attempt fails
Jim Oberg wrote:
on board the station' -- but that's not the issue and he knows it. Without a functioning Elektron, there is no reliable CSCS option for the Discovery crew. With the installation of additional solar panels, what is the excuse NASA is using for not activating the US O2 generator ? Isn't there sufficient electrical power now to run the famous US O2 generator ? Is there really a valid reason for waiting until next year to even start testing it ? Or does NASA really not interested in turning it on to find that it might be as reliable as Elektron or CDRA ? |
#4
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Elektron repair attempt fails
"Derek Lyons" wrote In May 2005, it was announced[1] that there was enough O2 for 'safe haven'. What has changed since then? (Or was that report incorrect?) I can't find any past estimates of O2 reserves googling about in this group - though I know they've been posted when discussing Elektron. There is enough if elektron is functioning, or OGS goes on line. |
#5
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Elektron repair attempt fails
Some plumbing hardware is needed, plus a LOT of crew time, including EVA . But that may be added to 116 and to the on-orbit EVA schedule. |
#6
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Elektron repair attempt fails
"Jim Oberg" wrote in message ... Some plumbing hardware is needed, plus a LOT of crew time, including EVA . But that may be added to 116 and to the on-orbit EVA schedule. Lack of early US O2 generation was always a concern for many of the readers here, especially given the Mir experience with Elektrons. I'd always hoped that the Russians had learned from the Mir failures and made fixes to the Elektron design for ISS, but the fact that we have two failed Elektrons on ISS and assembly isn't even done seems to indicate otherwise. So in this case, the Russians certainly haven't lived up to my expectations. They have, however, been doing a fairly good job of sending up Soyuz and Progress at regular intervals, which is good considering the clear lack of a US crew escape vehicle. Jeff -- "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety" - B. Franklin, Bartlett's Familiar Quotations (1919) |
#7
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Elektron repair attempt fails
John Doe wrote in :
Jim Oberg wrote: on board the station' -- but that's not the issue and he knows it. Without a functioning Elektron, there is no reliable CSCS option for the Discovery crew. With the installation of additional solar panels, what is the excuse NASA is using for not activating the US O2 generator ? The software that runs it (CCS R6) hasn't been uplinked yet, because it's not ready yet. Remember, the launch of the oxygen generator itself was accelerated. That was merely to ensure that it would already be in space and ready to go when the software was ready. -- JRF Reply-to address spam-proofed - to reply by E-mail, check "Organization" (I am not assimilated) and think one step ahead of IBM. |
#8
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Elektron repair attempt fails
Jeff Findley wrote:
I'd always hoped that the Russians had learned from the Mir failures and made fixes to the Elektron design for ISS, but the fact that we have two failed Elektrons on ISS and assembly isn't even done seems to indicate otherwise. Until anyone can make an O2 generator work reliably for a long time in 0G, one should reserve judgement about the Russian experience. If they ever activate the US generator and actually make it the primary O2 generator for the station (aka: same duty cycles as Elektron as opposed to just starting it now and then for a few hours as an experiment), and if that generator does prove to be reliable, only then can you claim that the Russians failed to fix their Elektron. Consider the possibility that RELIABLY extracting O2 and H2 bubbles in a 0G environment is not possible unless you perform the electrolysis in a centrifuge to create artificial "gravity"). |
#9
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Elektron repair attempt fails
"Jorge R. Frank" wrote:
The software that runs it (CCS R6) hasn't been uplinked yet, because it's not ready yet. Had the shuttle not been gounded for years because of Columbia, would this software then be many years late and NASA having to stop assembly process because the software to control the new hardware wasn't ready ? Or is this a case of the software having been ready years ago, but won't be uploaded until more modules are sent up ? |
#10
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Elektron repair attempt fails
John Doe wrote:
Jeff Findley wrote: I'd always hoped that the Russians had learned from the Mir failures and made fixes to the Elektron design for ISS, but the fact that we have two failed Elektrons on ISS and assembly isn't even done seems to indicate otherwise. Until anyone can make an O2 generator work reliably for a long time in 0G, one should reserve judgement about the Russian experience. Horse****. Regardless of the performance of, or even the existence of, anyone elses unit - the performance of Elektron is abysmal. If they ever activate the US generator and actually make it the primary O2 generator for the station (aka: same duty cycles as Elektron as opposed to just starting it now and then for a few hours as an experiment), and if that generator does prove to be reliable, Ah... Now we see your motive. You are cheerleading the all-singing, all-dancing Russian chorus line. only then can you claim that the Russians failed to fix their Elektron. Horse****. The status of Elektron is the same *regardless* of the existence or performance of anyone elses unit. D. -- Touch-twice life. Eat. Drink. Laugh. -Resolved: To be more temperate in my postings. Oct 5th, 2004 JDL |
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