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Posted by cole smith on August 28, 2006, 10:37 am
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Exactly my point. When compared to the cost of shuttle delays, I can't
imagine the costs on the Russian side being comparable.
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> But... if the risk of losing this entire Shuttle window is considered,
> and for some MONEY to double-up recovery forces, the Russians
> probably could be talked around into doing exactly that.
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Posted by John Doe on August 28, 2006, 3:00 pm
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cole smith wrote:
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>
> Exactly my point. When compared to the cost of shuttle delays, I can't
> imagine the costs on the Russian side being comparable.
One needs to look at safety first. Shuttle still has serious launch
limitations. And Soyuz, for this time, also has launch limitations. It
can be argued that in both cases, these are "political" limitations
(for Shuttle, so they can take pretty pictures, for Soyuz so they can
spot the landed capsule faster).
In terms of mechanics, where is this Soyuz supposed to dock ? Pirs or
Zarya ? If it is Pirs, does NASA allow it while the shuttle is already
docked ?
If they dock at Pirs, would NASA then allow the older Soyuz to undock
from Zarya while shuttle is docked ? (eg: do the springs push Soyuz far
enough away from the complex without the use of any thursters ?)
Or does NASA insist that there be absolutely no overlap between the 2
missions ?
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Posted by Gushter on August 28, 2006, 12:51 pm
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> 200 days for TMA-8 would be around October 17 by my reckoning. Seems
> like there is still some wiggle room.
It is more complicated than this since they want to have a reserve of a
few weeks (launch aborts, etc. or even vehicle failure in a worst case
scenario).
I find it really amazing though how complicated all space-related
preparations are (one-thousand safety checks, day recovery, night
recovery and what not). The shuttle processing time is way too long.
If a private company could borrow the Soyuz production and
infrastructure, optimize the whole process using lean methods and
economies of scale, reduce the cost by increasing the risk to a market
acceptable level (not the extra, extra risk averse NASA) then may be we
could see a lot more cost efficient space exploration or tourism.
G.
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Posted by Mike Ross on August 28, 2006, 2:31 pm
Please log in for more thread options On Sun, 27 Aug 2006 20:30:39 -0500, "Jorge R. Frank"
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>Soyuz is also used as the emergency crew return vehicle for the ISS crew.
>Each Soyuz is only certified for a 200-day orbital lifetime, so they must
>be changed out every six months or so.
What are the limiting factors there? Can that lifetime be extended on
a waiver, after a review of system status etc.?
Mike
--
http://www.corestore.org
'As I walk along these shores
I am the history within'
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Posted by John Doe on August 28, 2006, 3:48 pm
Please log in for more thread options Mike Ross wrote:
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> What are the limiting factors there? Can that lifetime be extended on
> a waiver, after a review of system status etc.?
If you are in a remote area, no medical facilities anywhere near, no
medication at all, do you REALLY want to wait until the milk is past its
due date before drinking it ?
Yeah, chances are that it won't do you any harm. But what if it does ?
Do you really want to take that risk ?
Question: does the shuttle carry lots of bungy cords ? Perhaps they
could bring the soyuz back in its cargo bay :-)
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> and for some MONEY to double-up recovery forces, the Russians
> probably could be talked around into doing exactly that.