On Sep 1, 10:14*am, Jeff Findley wrote:
In article ,
says...



bob haller wrote:
theres lots of systems that can fail without human intervention.
someone just rebooting a system can sometimes fix a system.......

But that's not going to change orbital mechanics, which is what
determines if it stays up or not.

Plus, as far as I know, Progress and ATV could both dock and perform
reboosts even while ISS is unmanned. *So even if ISS was in danger of
"coming down", there is still something we could do about it.

lack of pressurization would likely make any problem worse. lots of
systems may overheat without cooling air.

What lack of pressurization? *You don't have to let all the air out
just because you're leaving, do you? *If you can't keep air in it,
that's going to be REAL hard on the crew you're leaving up there,
isn't it?

If the crew does leave ISS, they'll surely shut all of the hatches
between modules so that if one does become depressurized, it won't
impact the others.

As usual Bob is worrying about the unlikely while simultaneously
thinking NASA and the Russians are both stupid and don't know how to
plan for such contingencies.

Jeff
--
" Ares 1 is a prime example of the fact that NASA just can't get it
* up anymore... and when they can, it doesn't stay up long. "
* *- tinker

you didnt read my paste from nasa of the odds of loss........... look
back a few posts.

Past NASA risk assessment shows a one in 10 chance of losing the
station within six months if there is no crew aboard to handle
critical system failures. That soars to a 50% probability if it
remains crewless for a year, the newspaper says.

its not just obital decay, loss of control where the station tumbles
making docking by anything impossible.

besides the ISS weighs more than any other man made object ever put in
orbit, i think its around a illion pounds....... much would survive re
entry

tumbling it would spread modules all over the ground track and no
doubt cause mass panic. likely ground most air travel. and such a
monumental event would likely end manned space travel for a
generation.

this is beyond russia deciding a man tended station where crews only
visit occasionally is the future plan after iSS is deorbited