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Astronauts To Repair Cooling System On ISS
GWMAW writes "NASA Astronauts will conduct a spacewalk on Thursday to repair part of the cooling system of the International Space Station. The cooling system is essential for maintaining the temperature inside the station. There are two 'loops' in the system, one that uses water and draws heat from the inside of the station, and one uses ammonia and dumps the heat into space. Ammonia is used because it freezes at a much lower temperature than water. On Saturday the pump that controls the flow of ammonia through the system shut down."
That's about as cold as it gets...
Typical Slashdot, a bit behind. This is the press release they sent out on Tuesday.
Aug. 03, 2010
Stephanie Schierholz
Headquarters, Washington
James Hartsfield
Johnson Space Center, Houston
MEDIA ADVISORY: M10-107
NASA MOVES SPACE STATION REPAIR SPACEWALK TO FRIDAY, SETS BRIEFINGS
HOUSTON -- The first of two spacewalks by NASA astronauts to replace a
failed ammonia pump on the International Space Station has been
delayed by 24 hours to Friday, Aug. 6. A second spacewalk is planned
for Monday, Aug. 9, to complete the repairs.
Flight controllers and station managers made the decision Monday night
after reviewing proposed timelines, final procedures for the repair
work, and the results from a spacewalk dress rehearsal conducted in
the Neutral Buoyancy Laboratory near NASA's Johnson Space Center in
Houston.
Expedition 24 Flight Engineers Doug Wheelock and Tracy Caldwell Dyson
are scheduled to perform the spacewalks. The two NASA astronauts will
replace an ammonia coolant pump that failed July 31.
NASA Television coverage of both spacewalks will begin at 5 a.m. CDT.
Wheelock and Caldwell Dyson are expected to begin the spacewalks from
the Quest airlock at 5:55 a.m. Friday's spacewalk will be the fourth
for Wheelock and Caldwell Dyson's first.
Approximately two hours after the conclusion of each spacewalk, NASA
TV will broadcast a briefing from Johnson. The briefing participants
will be Mike Suffredini, International Space Station program manager;
Courtenay McMillan, Expedition 24 spacewalk flight director; and
David Beaver, Expedition 24 spacewalk officer.
Reporters may ask questions from participating NASA locations, and
should contact their preferred NASA center to confirm participation.
Johnson will operate a telephone bridge for reporters with valid
media credentials issued by a NASA center. Journalists planning to
use the service must contact the Johnson newsroom at 281-483-5111 no
later than 15 minutes prior to the start of a briefing. Phone bridge
capacity is limited and will be available on a first-come,
first-serve basis.
Engineers and flight controllers continue to review data on the
failure, which resulted in the loss of one of two cooling loops
aboard the station. This caused a significant power down and required
adjustments to provide the maximum redundancy possible for station
systems. The systems are stable, and the six crew members aboard are
not in any danger.
Wheelock and Caldwell Dyson originally were scheduled to perform a
spacewalk to outfit the Russian Zarya module for future robotics work
and prepare the station for the installation of a new U.S. permanent
multipurpose module. However, because of the importance of restoring
redundancy to the station's cooling and power systems, the two new
spacewalks will be dedicated to the pump module replacement.
For NASA TV streaming video, schedules and downlink information,
visit:
http://www.nasa.gov/ntv
For more information about the station and the Expedition 24 crew,
visit:
http://www.nasa.gov/station
-end-
Serious? Seriousness is well above my pay grade.
From the article: "[...] the Russian module of the system could take control for a period of time until repairs could be made."
Take control?... Open the pod bay doors!!!
Couldn't they just stick a cat up in the ammonia part of the cooling system? Those fuckers produce tons of the stuff and they seem to want to distribute it around as much as possible.
Monstar L
...given the current geomagnetic storms, isn't this thursday a bad time to be outside in orbit?..
today's secret phrase is:
Gay Creatures in Outer Space!
Tracy, the female Astronaut will give it a good cleaning, just like she did when fixing the oxygen generator.
Male Astronauts just can't _really_ clean something if their life depended on it, and it does in this particular case.
Speaking of ammonia, the crew on the ISS are in a pretty interesting relationship dynamic.
I mean everyone up there's drinking the recycled pee of their crewmates.
Shhh! Don't tell kids who're aspiring Astronauts!
visit my pal the xkcd explainer!
I think its great that mundane repairs are being done on a real, fair dinkum space station, and there is nothing interesting to say about it.
http://michaelsmith.id.au
Why is loops in quotes? If the concept of a control loop is too complex/obscure for the slashdot crowd, just call it a sub-system a la Star Trek.
For more giggles, watch last monday's The Daily Show.
The interview largely focuses on fecal decapitation in space ;-)
People replying to my sig annoy me. That's why I change it all the time.
I mean everyone up there's drinking the recycled pee of their crewmates.
As are we all. Our water supply is finite too, you know.
http://michaelsmith.id.au
Science: Astronauts To Repair Cooling System On ISS
When will Microsoft finally produce an internet server that doesn't need to be fixed all the time?
Can't they just open a window like everyone else?
I would wish I spoke for everyone when I say good luck fixing the colling system. I personally hope that the spacesuit doesn't come off during the walk, because, at the rate the ISS has been going with failures, that's probably what's gonna happen.
so what local is the the ISS? i mean these guys are licensed, dues paying contractors right?
I know this is a kdawson story and all, but what is there really to discuss here? Okay, so a part in space broken down and will be repaired. Seems like a pretty routine thing to me. I can understand if this were some unorthodox procedure or novel technology that had never been tried before, but that doesn't appear to be the case here.
Back on topic: um... good luck guys!
That's exactly what I thought. There was a story that it was broken, no shit they're gonna fix it!
"Most people, I think, don't even know what a rootkit is, so why should they care about it?"
That is just *so* uncool.
Please do not read this sig. Thank you.
In major cities like Los Angeles or New York, the water coming out of your tap has already been artificially recycled numerous times.
Just imagine how many times all of the pee from all of the creatures that have ever existed on Earth has been recycled naturally. Yeah, our bodies are 90% water...water that was once something or someone's piss.
An uninsulated space suit in a vacuum wouldn't feel very cold on the inside as long as the suit doesn't touch anything on the outside.
What were the physics involved in the Apollo 13 mission when they were getting very cold after turning off the heaters in the spacecraft, using the LEM as a lifeboat?
Reclaiming the water from your own urine isn't even that hard. It's a pretty basic wilderness survival skill, for that matter.
Check out my world simulator thingy.