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| Science Forum Index » Space - Station Forum » HTV : 30 days maximum stay at station... |
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| John Doe... |
 Posted: Sat Sep 19, 2009 8:20 pm |
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Guest
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In the jaxa web site, I read a blurb that HTV has a maximum stay of only
30 days at the station and 100 days in orbit. (not sure if the 30 days
in included in the 100 or in addition to).
Anyone know if this is a systems isssue, similar to the 6 month limit
for a Soyuz once the fuel has begin to be used. Or is it just some
paperwork limitation because it is felt HTV has insufficient shielding
in its pressurised section (which appears much smaller than I though). ?
Or is it just 30 days now because its presence nadir of node2 prevents
docking or proper operations of a shuttle, so they want HTV to vacate
the premises before next Shuttle flight ?
In other words, once the USA is devoid of any spaceship capable of using
PMA2, would HTV be able to stay as long as it wants attached to node 2 ? |
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| Brian Gaff... |
| Posted: Sun Sep 20, 2009 3:27 am |
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I thought I heard sixty days in the current design, but I suspect the reason
at the moment is the port usage problem, certainly, otherwise the days in
orbit would be less would they not?
This is the first one and if we say one a year then I do not see its going
to be a good thing if its stuck at one month docked.
What about ATV which docks to the Russian segment, has this got a loiter
restriction?
Brian
--
Brian Gaff - briang1 at (no spam) blueyonder.co.uk
Note:- In order to reduce spam, any email without 'Brian Gaff'
in the display name may be lost.
Blind user, so no pictures please!
"John Doe" <jdoe at (no spam) doe.org> wrote in message
news:00316528$0$1993$c3e8da3 at (no spam) news.astraweb.com...
[quote:1099e81077]In the jaxa web site, I read a blurb that HTV has a maximum stay of only
30 days at the station and 100 days in orbit. (not sure if the 30 days
in included in the 100 or in addition to).
Anyone know if this is a systems isssue, similar to the 6 month limit
for a Soyuz once the fuel has begin to be used. Or is it just some
paperwork limitation because it is felt HTV has insufficient shielding
in its pressurised section (which appears much smaller than I though). ?
Or is it just 30 days now because its presence nadir of node2 prevents
docking or proper operations of a shuttle, so they want HTV to vacate
the premises before next Shuttle flight ?
In other words, once the USA is devoid of any spaceship capable of using
PMA2, would HTV be able to stay as long as it wants attached to node 2 ?[/quote:1099e81077] |
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| Jim... |
| Posted: Sun Sep 20, 2009 4:27 pm |
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Guest
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Brian Gaff wrote:
[quote:b82d37dca8]I thought I heard sixty days in the current design, but I suspect the reason
at the moment is the port usage problem, certainly, otherwise the days in
orbit would be less would they not?
This is the first one and if we say one a year then I do not see its going
to be a good thing if its stuck at one month docked.
What about ATV which docks to the Russian segment, has this got a loiter
restriction?
Brian
[/quote:b82d37dca8]
Looks like the ESA Jules Verne ATV-1 was docked almost 6 months at ISS.
I was thinking it was a relatively long time. Looks like it docked on
4/3/08 and undocked 9/5/08 |
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