ISS Progress 21 to be used as a "closet"?

ISS Progress 21 to be used as a "closet"?

http://www.nasa.gov/mission_pages/st...2_docking.html

So how long do the Russians plan to leave ISS Progress 21 docked to ISS?
How long can a Progress stay in orbit and not present a problem, say related
to it's propulsion system or other system(s)?

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)

"Jeff Findley" wrote in message
...
ISS Progress 21 to be used as a "closet"?

http://www.nasa.gov/mission_pages/st...2_docking.html

So how long do the Russians plan to leave ISS Progress 21 docked to ISS?
How long can a Progress stay in orbit and not present a problem, say
related to it's propulsion system or other system(s)?

Oops. I meant ISS Progress 22, not 21.

Another short article about this Progress, but not indication of how long it
will be attached to ISS.

http://www.nasaspaceflight.com/content/?id=4578



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)

"Jeff Findley" wrote in
:

ISS Progress 21 to be used as a "closet"?

This isn't news. Progresses are generally kept docked to the station
(whether it's Salyut, Mir, or ISS) until they either fill up with trash,
are depleted of consumables, or the next Progress is ready.

http://www.nasa.gov/mission_pages/st...edition13/exp1
3_progress22_docking.html

So how long do the Russians plan to leave ISS Progress 21 docked to
ISS? How long can a Progress stay in orbit and not present a problem,
say related to it's propulsion system or other system(s)?

Longer than a Soyuz. Soyuz is limited to six months due to the H2O2
monopropellant used in the descent module. Progress doesn't have a descent
module so it doesn't have that problem.


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JRF

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