Slashdot Mirror
ISS May Have A Leak
Rio writes "The International Space Station is experiencing a slow, steady drop in air pressure, and American and Russian flight controllers are investigating possible causes of the leak. The Local 6 News report says Mission Control notified astronaut Michael Foale and cosmonaut Alexander Kaleri about the leak just before their bedtime late Monday afternoon. Mission Control first noticed the drop in pressure Jan. 1 and said the data showed a daily decline of about 2 millimeters of mercury. As of Monday, the pressure had declined a total of nine millimeters. That is equivalent to about one-quarter of a pound per square inch, said NASA spokesman James Hartsfield."
Damn Slashdot... I was about to come out in my penguin outfit to show my Linux Pride.
/^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i
Two spoons, chalk, washing up bowl, rubber patch, glue.
This is payback from the Martians.
Well, either they'll find out what went bump last November, or everyone will die and we'll be subjected to another Tom Hanks space movie.
they have duct tape, right? If they don't they'll REALLY be in trouble.
Esoteric reference.
one small use for toothpaste...
They say "There are no immediate concerns for the safety or health of the crew", but what are they doing about it?
When is it time to take action?
Do they have a way to leave?
They have a supply of Oxygen and Nitrogen to repressurize the station, but how long will that last?
It would be nice to sit in on the decision-making, just to observe...
--
Use Vobbo for Video Blogs
just before their bedtime late Monday afternoon
Astronauts have a bedtime?!? Screw that, there's goes my plans for the future.
Would a leak this size be visible from outside of the station? I.E. would you see a small stream of gas? And since the ISS is broken into compartments, they should be able to seal each compartment and iron the leak down to a single compartment. Then its a matter of finding the leak itself.
If my answers frighten you, stop asking scary questions.
Just submerge it in water and look for the bubbles.
Or in this case space and look for the air.
They'll run out of air within the next couple hundred days. But that's only if they have no reserve tanks and fail to patch the leak.
Buzz: Homer, you broke the handle.
Race: With that hatch open, we'll burn up on re-entry! That's it: if I go, I'm taking you to hell with me.
Homer: Wait a minute, Race. Wait a minute...wait!
[breaks off a support rod]
Aha! Now I'll bust that pretty face of yours!
[tries to swing it, but it catches in the door]
Aw, stupid bar.
Buzz: Wait, Homer. If that bar holds, we just might make it back to earth.
Homer: Oh. [voice rising] I'll bash you good!
--
Use Vobbo for Video Blogs
Oh, and before you go to sleep, one last thing. You're running out of air. Pleasant dreams.
Mission Control notified astronaut Michael Foale and cosmonaut Alexander Kaleri about the leak just before their bedtime
How are they supposed to get a good night's sleep after they've just been told that their home is leaking oxygen?
The leak... does that suck or does that blow...?
Help save the critically endangered Blue Iguana
"Mission Control notified astronaut Michael Foale "
They have a leak and they bring in Mike Foale? Why do they need a motivational speaker? Or are things that bad. Further more what kind of rockets have we developed to get Cris Farley up there? Or did he go up by himself in a soyuz?
Well, if they can't seal the leak, they'll need to send the astronauts home until Shuttle is back in service, which could be 2 years plus. Hopefully, they'll find the leak and fix it.
One possible cause of the leak is from a meteorite impact. I have a tiny bit of experience with this from my grad school days. During the design stage of the American module, there was some concern about what would happen if there was an impact from debris. Tests showed that if the impact object was the right size, the entire damaged section could "unzip" and the and essentially blow up, likely killing the astronauts and disabling ISS. The design was tweaked, and it was showed that the section would not unzip, instead it would leak (probably not as slow as what is described, though-- think hours to reach vacuum, not months or seconds).
I have no idea if that's what happened-- it might be a completely unrelated issue. But just wanted to point out that a tremendous variety of possible events are considered, and NASA really wants to assure that none of these could result in a catastrophic event.
Pool on the roof must have a leak! ;-)
SETI finds something?
Would it be too much trouble to just light a match and see where the smoke goes? It worked on Stargate: SG1!
-- 'The' Lord and Master Bitman On High, Master Of All
Just light a cigarette, and follow where the smoke goes to figure out where the leak is.
Then, patch it with chewing gum, and have a beer (or shot of vodka) to celebrate the success.
They do allow cigarettes, gum, and alcohol on the ISS, don't they? Of course! All of the movie space stations do!
"Alcohol, Tobacco, Firearms, and Explosives" should be a convenience store, not a government agency.
Can't they shut off sections of the space station...I mean, don't they have independant life support systems in multiple modules???
It sounds kinda easy to me...find some way of sealing off a section and put the equipment in that room (if it's portable)...come back in a day...if the pressure hasn't dropped in 24 hours, you know it's not THAT module...even moreso, if it happens in more than 1 section, it might be shared systems...
I know they probably have a better way to deal with this, but isn't there multiple backups? Wouldn't this be a good use of those backups? I just don't see the concern...they have a russian capsule that can be used as an escape pod...in the worse case, they'll just leave the station for a while...
I've always been under the impression that they don't NEED anyone aboard the station to dock, but it helps...
Mission Control first noticed the drop in pressure Jan. 1 and said the data showed a daily decline of about 2 millimeters of mercury.
Mission Control: "Well guys, we have some good news and some bad news. The good news is, you're having to deal with two fewer millimeters of mercury per day."
Astronauts: "That's good. Mercury's bad...right?" Mission Control: "Did we say mercury? We meant mercury as in 'air pressure'. G'nite!"
No comment.
Now they just need to figure out who is going to take the soapy water outside and apply it all of the seams to find the leak.
You remember correctly.
h tm
"A Soyuz capsule will always be docked at the ISS, capable of carrying two people in a medical emergency, or three people in other emergencies. A crew will take a fresh Soyuz capsule to the station every six months."
http://science.howstuffworks.com/space-station11.
"I am highly trained Russian Astronaut! This is a very sophisticated piece of scientific equipment. Don't touch nothing!"
A little more detail - Denver is the "mile-high city," so figure it's at around that height. Figure sea-level air pressure at 100 kPa (14.5 psi); air pressure at 1 mile is somewhere in the area of 50 kPa (7.25 psi). At a rate of 2 mm of mercury a day they only have about a year before they reach Denver pressure, though I assume they'd want to do something about it well before that....
fencepost
just a little off
1) Noise detection equipment.
2) Take up smoking - use a modified bong to prevent excessive discharge of ash.
I'm an astro-nut. If I could control where most of my taxed income went, I'd almost certainly have it tunnelled off to Air Force black projects, NASA and science education.
That being said, the ISS has long since become a turkey. It's time to cut that thing loose and build us something usefull. In particular, real telescopes that will let real science be done. This space station is nothing more than a big money black hole.
I'd much rather have a space based inferometer placed at one of the Earth's lagrange points. We could learn a lot from something like that! What are we learning from ISS? Russia has no money... nobody else will cooperate with us... people can't stay up in space for a long time (hello mir?) and our space program is woefully inadequate. Great. Billions of dollars for this? I could've told you this years ago...
Bryan
Mission Control notified astronaut Michael Foale and cosmonaut Alexander Kaleri about the leak just before their bedtime
You know, Alexander, this may be our last night alive together..
Uh huh.
Well... There's been something I've been meaning to ask you...
Uhm... Ok?
I've noticed... When you're alone in the shower... Uh... You look so lonely...as the water slowly rolls down your back...cheeks glistening in the glow of the fluorescent light.
Get off me freak!
Your numbers are off. Normal sea-level pressure is 760mm Hg. If they lose 2mm/day, after a year they'll only have 30mm Hg left, which, according to the Google calculator, is 0.58 PSI.
Take a leak in the room where the air pressure is at the lowest, follow stream, apply duct tape at the spot where the fluids have left the room.
After that resume hanging out in weightlessness until the next problem.
Reporter: It's a lovely day for a launch, here, live at Cape Canaveral, at the lower end of the Florida Peninsula, and the purpose of today's mission is truly, really electrifying.
Other reporter: That's correct, Tom. The lion's share of this flight will be devoted to the study of the effects of weightlessness on tiny screws.
Reporter: Unbelievable, and just imagine the logistics of weightlessness. And of course, this could have literally millions of applications here on Earth -- everything from watchmaking to watch repair.
Reporter: Now let's look at the crew a little.
Other reporter: They're a colorful bunch. They've been dubbed, "The Three Musketeers". Heh heh heh.
Reporter: And we laugh legitimately. There's a mathematician, a different kind of mathematician, and a statistician.
God, your post is so ignorant that I have to wonder why you bothered composing it.
1. No "international" = no "space station".
If there hadn't been international cooperation, we wouldn't have a space station in orbit right now. Compared to the Russians, what NASA knew about space stations could be written on a postage stamp.
Lest you forget, Skylab wasn't exactly a screaming success (heck, one of its solar panels failed to deploy: you could hardly call that an auspicious start). Its longest period of occupancy was 84 days and it was deployed as one unit and nothing like as modular as the ISS.
On the other hand, Mir far outlived its operational life (and would have done so by an even greater margin if the bean counters hadn't tried to cut so many corners), and was occupied almost constantly for 15 years. During that time, docked with 31 spacecraft, 64 cargo vessels, 9 shuttle missions visited it and it was home to 125 cosmonauts/astronauts from 12 different countries. It was, of course, modular, like the ISS. Oh, and before Mir, the Russians also had the Salyut series of space stations up and running throughout the 1970s and 1980s.
When Russia came on board, the ISS gained a lot of expertise; the sort of expertise that money just can't buy. If you think you can find one person at NASA who thinks that putting up a space station as complex and as expensive as the ISS could have been done by the US alone then you're deluding yourself.
2. NASAs main partners in the ISS are Canada, ESA, Russia and Japan, but most of their modules have yet to be deployed.
There is no "British" space agency involvement in the ISS. However, there is ESA (European Space Agency, of which Britain plays a very small role) involvement in the ISS. This involvement includes the Columbus Laboratory, the Automated Transfer Vehicle, Nodes 2 and 3, the European Robotic Arm, and the Data Management System for the Russian Service Module. However, most (if not all) of these elements have yet to be deployed, so I fail to see how they can be responsible for a pressure leak when they're sitting on the ground.
The same is true for the Japanese involvement, the Japanese Experiment Module (JEM) also known as Kibo, which is currently undergoing testing at the Kennedy Space Centre prior to launch. Sorry to break it to you, but if their module isn't up there, I can't see how you can hope to "share the blame for this latest debacle" with the Japanese either.
By the way, the single biggest contractor on the ISS is Boeing. Last time I checked, Boeing was an American company.
3. A "sole space agency" is in charge. It's name is NASA.
The ISS may be international, but NASA is its lead partner. All others play second fiddle to it and that's never been in doubt. If there's someone "in charge of making sure everything [runs] right" that someone is NASA.
So that's D'oh!, D'oh! and thrice D'oh!
Seriously, if you could get off your xenophobic high horse for a second (and get some basic facts right too) then perhaps you might have a point (ie, that someone screwed up, again) albeit a rather weak one. But trying to turn this story into a "USA rules, rest of you just suck" gloat is pathetic, particularly when you're so off-base.
"Accept that some days you are the pigeon, and some days you are the statue." - David Brent, Wernham Hogg
It is official; Netcraft confirms: ISS is dying
One more crippling bombshell hit the already beleaguered ISS community when NASA confirmed that ISS atmosphere has dropped yet again, now down to less than a fraction of 95% percent of all atmospheres. Coming on the heels of a recent Netcraft survey which plainly states that ISS has lost more atmosphere , this news serves to reinforce what we've known all along. ISS is collapsing in complete disarray, as fittingly exemplified by falling dead last in the recent "Space Stations: What's hot and what's not".
You don't need to be a Kreskin to predict ISS's future. The hand writing is on the wall: ISS faces a bleak future. In fact there won't be any future at all for ISS because ISS is dying. Things are looking very bad for ISS. As many of us are already aware, ISS continues to lose atmosphere.
All major surveys show that ISS has steadily declined in cool factor. ISS is very sick and its long term survival prospects are very dim. If ISS is to survive at all it will be among russian dilettante dabblers. ISS continues to decay. Nothing short of a miracle could save it at this point in time. For all practical purposes, ISS is dead.
Fact: ISS is dying
Just cut the air vents for a couple of hours, chuck some M&M's in the air and see where they go. Then just slap some silicon adhesive in there.. it'll hold
Smeghead every day of the week.
I did screw up the numbers, and it is around half a year. I was working in kPa and did the conversion from 1mm Hg to kPa but forgot to double the result.
fencepost
just a little off
One atmosphere at sea level equates to 760mm of mercury. So a 2mm drop is a 0.26 percent drop in atmospheric pressure, assuming the atmospheric pressure of the ISS is set to that of sea level.
(I have no data on the standard operating atmospheric pressure of the ISS. Perhaps someone else can supply that so we can make a more direct measurement of the percentage fall.)
"Accept that some days you are the pigeon, and some days you are the statue." - David Brent, Wernham Hogg
Spray the inside of it with fix-a-flat and spin it around.
He who knows not and knows he knows not is a wise man. He who knows not and knows not he knows not is a fool.
Until the leak is found and resolved, all the astronauts need to keep the air pressure up is eat some beans...
Those who can, do. Those who can't, consult.
This looks like a job for:
Bicycle Repairman!
Mission Control Alerts Station Crew to Slow Air Leak By Marcia Dunn AP Aerospace Writer posted: 08:00 pm ET 05 January 2004
Would it be bad news if instead something finds SETI?
That depends on whether that something has developed ray guns.
According to Google, 9mm of mercury is 1200 Pascals, whereas 0.25psi is 1700 Pascals.
This is the last thing that NASA needs right about now. No matter what the root cause of the leak is, it will still cast a negative shadow on the space agency. The public can be a fickle bunch.
I hate sigs.
1. who remembers a few months back when they thought they heard something "hit" the station?
i would start looking in that direction.
2. there are a number of posts about watching objects(insert with balloons, pepsi, dr peper,,,) float thru the station and use that for an indicator of air flow.
as with other manned space programs the ISS has CO2 scrubbers(remember apollo 13) that keep the air clean. i was under the impression that the air is circulated thru these and that a flow already exists because of this. i also recall reading that with skylab this flow effect caused lose items to commonly be found at one end of the station.
3. newtons laws of motion and inertial navagation.
even though the ISS is in a fixed orbit, it still makes use of an inertial navagation system. it is required to keep the station from tossing and tumbling out of control when the astro/cosmo-nauts move around. each of their movements create a reaction which causes an equal and opposite reaction on the station. a computer is constatly making corrections to maintain pitch and attitude of the station. a log these corrections will show these reactions to be somewhat random with an almost noise quality.
with a contiuous leak of a known size in the iss, a constant known vector(except for location) is created. once the noise is removed the location should be able to be calculted from the log information.
in short, break out the slide rules!
If there's one thing my hollywood education has taught me its that Dr. Pepper is the best way to find a leak in a space station/vehicle.
Somebody crack open a can and be ready for some slow motion.
Thank you Red Planet...or Mission to Mars...or whatever the hell that movie was.
No datacenter is secure if it has windows.
What's the point of an experimental space station if not to learn about things that can happen to a space station and its inhabitants, and what to do about it? I think we can learn something from this.
:P.
Of course, provided they actually solve it
Didn't NASA learn anything from losing the Mars Climate Orbiter?
"Houston, pressure is down again, we've lost three hogsheads of air in the last lunar month."
"Sorry, ISS, can you translate that into firkins per square thread?"
GCHQ Quantum Insert installed. If only our tongues were made of glass, how much more careful we would be when we speak
They plan around the lifeboat capacity. Even when they used to move the Soyuz between docking ports on Mir (i.e. to free up the only port that a shuttle orbiter could use) everyone had to go aboard the Soyuz for the maneuver, just in case they couldn't re-dock. If they couldn't, they'd abandon the station until another crew could be launched to re-man it.
Of course, they've always able to re-dock so far. There hasn't yet been an unscheduled abandonment of a space station.
The Soyuz-TMA spacecraft serving as the current lifeboat is the one that Foale and Kaleri were launched in. But a Soyuz has a finite shelf-life. Occasionally Russia launches a short-duration crew to bring up a new Soyuz (with fresh batteries and other supplies) and take back the old one. That's just part of sustaining the long-duration mission and its crew.
ISS has more docking ports so they don't have to juggle them like they did on Mir. (And there are no scheduled shuttle orbiter arrivals before late this year anyway.) But if they had to move the Soyuz for any reason, it would still be the same thing - all aboard and leave no one behind.
This is a procedure NASA learned from the Russians, among many things they learned from each other. Remember, when they started working together on the Shuttle-Mir dockings in the mid- to late 90's, NASA had the experience with big shuttle orbiters, but no long-duration platforms. Russia had the experience with space stations, but wasn't able to bring as much cargo up, and almost nothing (in comparison) back down. Each had what the other needed so that worked pretty well, besides all the symbolism it made for the end of the Cold War.
So, what are they going to do now? My guess is the first thing will be to close all the hatches to try to isolate and identify the module (or docking port between modules) with the leak. They have a finite supply of gas with which to repressurize the station - so this can't go forever without becoming a danger of shutting off a module. In a worst case scenario (which can't be ruled out yet but also isn't likely yet either), they'd have to abandon the station and take the Soyuz on re-entry back to Earth. So they have to look for it and try to fix it ASAP.
At any given time, if Foale is forced to make a life-and-death decision as commander, even he could initiate abandonment of the station. He was aboard Mir when the Progress collision occurred in June 1997. They had to close the hatch to the Spektr module (where all of Foale's on-orbit personal belongings were), losing that module and the power from its solar panels. He's seen worse than this. But I wouldn't be surprised if he didn't sleep well tonight.
a couple articles from 2002 when NASA figured contingency plans in the case of an emergency or budget shortfall.
here here and here
Or at least so says this page on "Cockpit Pressurization Schedules" from the flight manual...gotta love FOIA.
Facts do not cease to exist because they are ignored. - Aldous Huxley
PV = nRT
Pressure goes to 0.
Volume becomes essentially infinite.
Temperature probably remains about constant.
So the gas doesn't freeze, or liquify, but just disperses.
For a slow expansion of a fixed quantity of air in a confined volume (which is not at all like what is happening on the ISS), the gas would probably liquify on the walls of the container, but I doubt it would freeze: It's not cold enough, even in space. I think it would have to be within a few micro-Kelvins of absolute zero, and even then might not freeze, due to quantum uncertainty.
Space (far from the sun) is about 3 degrees Kelvin, due to the cosmic background radiation.
HCG 50a = 2MASX J11170638+5455016
11h17m06.4s +54d55m02s