Astronauts Attach Mannequin to Outside of ISS 194
lhouk281 writes "According to Space.Com, astronauts have attached a mannequin to the outside of the International Space Station to study the effects of radiation on the human body. The mannequin contains actual bone surrounded by simulated organs and synthetic skin, with sensors studded throughout." There's another story that has detail on how the spacewalk went: a suit malfunction caused the spacewalk to end prematurely.
actual bones (Score:4, Funny)
Re:actual bones (Score:5, Funny)
Re:actual bones (Score:3, Funny)
"No, wait, I want to stay inside to keep an eye on the station!"
Obligatory Jack Handy Reference (Score:2, Funny)
Re:actual bones (Score:1)
Re:actual bones (Score:5, Informative)
I'm not sure what you're suggesting with ground-up bones... an ossified version of particle board?
Dude... (Score:5, Funny)
*ducks*
Re:Dude... (Score:5, Funny)
Re:Dude... (Score:3, Funny)
(and in this case my SIG doesn't apply)
Re:Dude... (Score:3, Informative)
It has to do with what force is acting on the gas to make it go from a pressurized area into a vacuum. Does the vacuum exert some kind of attractive force on the gas to pull it out? If so, then it would suck. Or is the force caused by the atoms of the gas colliding and pushing the other atoms away? If so, then it would blow.
Just
Re:Dude... (Score:2)
Mannequin attached to outside of space station...? (Score:4, Funny)
Far Side cartoon (Score:5, Funny)
Re:Mannequin attached to outside of space station. (Score:5, Funny)
I could almost swear they are trying to reenact a couple of Kraftwerk albums.
Showroom dummies, outside the Spacelab, to study Radio-Activity?
Re:Mannequin attached to outside of space station. (Score:2, Interesting)
Since when did Jamie and Adam become astronauts?
Hmm... (Score:4, Interesting)
Re:Hmm... (Score:4, Informative)
I believe thats a myth.
There just isn't enough pressure in the human body to make it explode in a vacuum like you see in sci-fi films.
Re:Hmm... (Score:2, Interesting)
Re:Hmm... (Score:5, Interesting)
Re:Hmm... (Score:2)
Who would have thought that the sun heated the earth through convection eh?
Re:Hmm... (Score:5, Interesting)
The sun is about 6000K: you are about 300K. Since radiation goes as the fourth power of temperature, the sun is about 20^4 times as good a radiator as a human body.
You would, of course, eventually freeze in space. But it would be many hours after you suffocated.
Re:Hmm... (Score:5, Interesting)
Obviously if you just abruptly depressurised a person, they'd form nitrogen bubbles in their blood and contract the bends, and probably die. But what if... And this is a big morbid what if... What if you slowly depressurised a person while having an oxigen mask securely (but comfortably) attached to their face? Could you eventually bring a human body down to zero atmospheres and they'd be able to stay alive?
If not, what would be the lowest limit?
Re:Hmm... (Score:5, Interesting)
One of the problems with long term decompression is that blood vessels near the surface expand greatly... suck on the inside of your arm for an example - it happens bodywide. Not a problem for a few minutes, but it will end up bruising tissue badly after long term exposure.
Re:Hmm... (Score:5, Interesting)
The other problem would be evaporation. Your sweat would boil off in a vacuum, which would leave you extremely cold and with very dry skin.
And if you're in space, prepare yourself for the ultimate in sunburn.
Needless to say, I won't be volunteering for tests.
Re:Hmm... (Score:3, Insightful)
Re:Hmm... (Score:3, Informative)
Re:Hmm... (Score:2)
Re:Hmm... (Score:2)
Re:Hmm... (Score:5, Informative)
Some points to consider:
1. the molecules don't 'know' whether there is a vacuum or not. They just feel an electrostatic force due to each other's proximity.
2. temperature and heat are two different things.
3. The boiling point is the temperature at which the vapour pressure of the liquid equals the ambient pressure.
When a liquid reaches boiling point, evaporation goes much faster (since it can occur throughout the liquid not just at the surface which leads to great heat loss, which means that the temperature cannot rise any further. So at lower pressures, the boiling point is lower.)
4. It's saturday and sunny out (at least around here it is), so instead of arguing about physics, it's far more fun to go outside.
Re:Hmm... (Score:2)
Re:Hmm... (Score:2, Interesting)
Could we have equipment out in space that used vacuum tubes without the glass envelope? If space itself is a vacuum is it possible that electron tubes could be simply fabricated in the 'open' as part of electronics equipment? Maybe it's time to revive the old tube-type computer designs from the 50's.
Re:Hmm... (Score:2, Interesting)
And yeah, it's probably a good idea to assume you'd be breathing pure oxigen so you could keep the O2 pressure as low as possible to help the body adjust.
Designed? (Score:2)
Re:Hmm... (Score:2)
YOu also have to make sure that you let all air out of your lungs, otherwise they migh pop - another scuba diving related danger!
Not sure if you would be able to live for extended period in a vacuum but with a oxygen supply. Nasa had an incident with a suit getting decompressed and the guy was O
True, but Radiation's still surprisingly effective (Score:5, Interesting)
But interestingly, I discovered just last week if you take a spaceship out of direct sunshine, it starts to lose heat pretty substantially. One of the first space stations (I forget which) had its heatshield buggered up by over-early deployment and it started to overheat dramatically. An astronaut pushed an umbrella arrangement out an airlock to provide cover from the sun, and the temperature "immediately began to drop" (ok, a little obvious) and was within the expected range within a day. I saw this on "The Planets" TV show which was excellently researched, so I'd assume this was pretty valid.
In summary, radiation of heat seems to still provide a pretty good cooling mechanism in space, despite being much slower than conduction.
So while you'll be relieved to know you'll asphyxiate in comfort and warmth, you'll eventually become a corpsicle if you stay out of the sun(light).
cheers, Sal
--
Sal
Writings: saltation.blogspot.com [blogspot.com]
Wravings: go-blog-go.blogspot.com [blogspot.com]
Re:True, but Radiation's still surprisingly effect (Score:2)
Re:True, but Radiation's still surprisingly effect (Score:2, Informative)
the human's proportion of surface area to volume is much much higher than a space ship. as you make objects larger, the surface area tends to increase in square proportion, the volume in cubic proportion. so the ratio of surface-area to volume decreases as things get bigger. cats freeze quicker than humans, humans freeze quicker than elephants (not least 'cos they're buggers to get into the fridge).
i could be a smartarse at this point, and point out that the spaceship, bein
Re:True, but Radiation's still surprisingly effect (Score:2)
Re:True, but Radiation's still surprisingly effect (Score:2)
Re:True, but Radiation's still surprisingly effect (Score:2, Funny)
nb: the same applies to humans under 1meter tall
--
Sal
Writings: saltation.blogspot.com [blogspot.com]
Wravings: go-blog-go.blogspot.com [blogspot.com]
Niven... (Score:2)
Tm
Re:Hmm... (Score:5, Informative)
The space mannequin's "skin" is a coat of multi-layer insulation containing thermo-luminescence dosimeters, detectors that glow in proportion to the amount of radiation they receive. Those detectors are distributed about every inch (2.5 centimeters) throughout the torso to give scientists a depth-dose profile of radiation exposure. (...) Encapsulating the Phantom torso is a protective canister of carbon fiber-reinforced plastic.
A spaceship filled with a dummy (Score:2, Interesting)
So, they're making a mini spaceship and putting a dummy inside it. I guess the carbon fiber and plastic won't take away much of the radiation, but it still seems a bit weird. Why not just dress them up in a real space suit (or, given the form of the dummy, a cut-down version)?
Re:A spaceship filled with a dummy (Score:3, Informative)
Itself replete with radiation sensors, the canister's interior supports an oxygen environment to better mirror its human space suit counterparts.
Also, this is just the torso, not an entire dummy. No arms or legs.
RANDO (Score:4, Informative)
Actually the phantom is made up of several slices, about 30, stacked on top of each other on a central rod. (Think of the old baby toy.) The main material of the phantom is called RANDO(R) [phantomlab.com]. It's embedded with bits of bone and polyurethane to simulate organs. I believe the "natural bone" is ground up and reshaped into bone like structures.
To answer your question, there's really nothing to "blow up" during depressurisation. All of the phantom slices are solid with lots of cut-outs for radiation detectors.
- charboy
it'll be... (Score:4, Interesting)
Re:it'll be... (Score:4, Insightful)
Re:it'll be... (Score:5, Interesting)
Actually space debris and meteoroids hit ISS quite often. So far they have been very small and as you say hopefully it remains that way. ISS is designed to withstand impacts up to a certain size and probability by placing an additional wall outside the pressurised module to absorb and diffuse the impact. Learn more about the general policy in Protecting the Space Station from Meteoroids and Orbital Debris [nap.edu]. Or see a short explanation of the Meteorid / Debris Protection System [aerostudi.com] for Node 2.
- charboy
Re:it'll be... (Score:2)
Pretty Wacky.... (Score:2, Funny)
I thought the fact that space was incredibly dangerous to the human body was already quite well proven (look at the scenes in all the sci-fi movies whenever anyone gets ejected into space, it isnt a pretty picture!)
Re:Pretty Wacky.... (Score:2)
Amm... You think that's air you're breathing? Eh?
Re:Pretty Wacky.... (Score:2, Interesting)
There's tons of value to be had. Space is an extremely hostile place for a human being to live. The effect of radiation on bone marrow alone is something to fear.
If we don't do experiments like this, we won't have clues needed to propose, test, and develop treatments for injuries or possible accidents that may occur in future human space exploration..
Cheaper Alternative (Score:3, Funny)
One careful owner mannequin (Score:2)
One careful owner mannequin, now in space. Previously used only in car pool lanes around KSC.
*sigh* (Score:5, Funny)
Unless the real reason is to create space zombies for the purposes of space exploration. Think about it: no need to pack along food, no need to pack along oxygen...perfect for GW Bush's planned invasion of Mars.
Re:*sigh* (Score:2)
--riney
Dummy discovers external radiation effects (Score:5, Insightful)
I'm just wondering how they would make claims from this - "See, the radiation at 2.5cm below the middle of the first left rib is X, therefore it will cause a mild nausea".
Sure, artificial organs would give a slightly better idea of the radiation penetration, but why would such knowledge be useful?
Re:Dummy discovers external radiation effects (Score:2)
Because it's fun?, Besides, `knowledge is power' and how can you say that power is not useful?
Re:Dummy discovers external radiation effects (Score:2, Insightful)
I would have thought radiation would be the last of your worries if you found yourself in open space. The low pressure and lack of oxygen would be a bigger problem.
radiation effects are well documented (Score:5, Insightful)
Re:radiation effects are well documented (Score:2)
Oddly enough, I did a similar science fair project in 4th grade, only it wasn't a plant, it was a fish. Then I got to meet the nice school psychologist.
Re:Dummy discovers external radiation effects (Score:2)
The effects of "radiation" (Score:5, Funny)
Or, more specifically: "Put the fear of God into cosmonaut Josif by telling him if he forgets to put down the seat on the vacuum-toilet one more time, we're putting him out there next".
And next week, in the interest of furthering science and our understanding of the universe, the ISS will be installing a plank.
Re:The effects of "radiation" (Score:2)
It gives us some idea of what Bush and co. are likely to do when they finally catch Bin Laden.
Cool idea (Score:5, Interesting)
Re:Cool idea (Score:2)
Space.. the final frontier... (Score:5, Funny)
One was American, One was Russian and the other was English.
NASA allowed each of them to take 200 pounds of baggage each.
The American decided to take along his wife, the Englishman decided to take along books to learn how to speak German, and the Russian decided to take along cigarettes.
Two years later, when the space shuttle landed, there was a big crowd waiting to welcome them home.
First came the American and his wife and each of them had a baby in their arms.
Next came the Englishman speaking fluent German. They both gave their speeches and got a rousing round of applause.
Suddenly, out came the Russian with a cigarette in his mouth. He walked up to the podium, snarled at the crowd, and asked "Has anyone got a match?"
TRUE STORY (Score:3, Funny)
Many people at NASA thought it was a casual remark concerning some rival Soviet Cosmonaut. However, upon checking, there was no Gorsky in either the Russian or American space programs. Over the years many people questioned Armstrong as to what the "Good luck Mr. Gorsky" statement meant, but Armstrong always just smiled. Just last year, (on July 5, 1995 in Tampa Bay FL) while answering questions following a speech, a reporter brought up the 26 year old question to Armstrong. This time he finally responded. Mr. Gorsky had finally died and so Neil Armstrong felt he could answer the question.
When he was a kid, he was playing baseball with a friend in the backyard. His friend hit a fly ball which landed in the front of his neighbor's bedroom windows. His neighbors were Mr. & Mrs. Gorsky. As he leaned down to pick up the ball, young Armstrong heard Mrs. Gorsky shouting at Mr. Gorsky. "Oral sex! You want oral sex?! You'll get oral sex when the kid next door walks on the moon!"
Oh, bullshit. (Score:5, Informative)
Suit Malfunction? (Score:5, Funny)
There is a graphic novel in there somewhere. (Score:2)
Bombarded by radiation, the manniquin of bone and synthetic flesh became imbued with a kind of life...and a malevolent intelligence.
Manequin 3: space (Score:4, Funny)
Ah.... (Score:5, Funny)
Such a shame...testing on a mannequin just isn't the same, but I guess you just make do with what you have.
Perhaps you would like to volunteer? (Score:2)
Nothing critical, just a SUIT MALFUNCTION (Score:3, Funny)
On the bright side it did not cause the spacewalker to end prematurely.
-
That must be creepy... (Score:5, Funny)
Anyone else think one of the astronauts ordered a real doll [realdoll.com] and when the other astronauts caught him with it they put it outside? Then when NASA asked about the body outside the space station they just answered "Uhh well we're ummmmm testing the affects of radiation on the human body, yeah that's it."
Why use a mannequin? (Score:3, Interesting)
Is that why air is such a precious commodity in space? They need it to blow up their girlfriends? Must get mighty lonely up there
Re:Why use a mannequin? (Score:2, Insightful)
Well, if they used a human body the only data they'd get would be when they got it back and cut it up. That would only let them see how much damage the radiation had done.
Their mannequin is stuffed full of sensors that will record the radiation levels a body would be exposed to. These circumstances can be reproduced repeatedly in the lab wit
Re:Why use a mannequin? (Score:2)
Re:Why use a mannequin? (Score:2)
Re:Why use a mannequin? (Score:2)
Who says they didn't? It's not like you and I are able go up there and check. This mannequin is nothing more than a cover story.
Wait for the first astronaut to return screaming: "People! mannequin is people!"
Or maybe not. However, in the late 1950's they used to use real corpses instead of crash test dummies in simulated car accidents. (Since you can't make a good dummy if you don't know how a real body reacts) It's the logical thing to do, even if it isn't the most socially acceptable.
Whats its Name? (Score:2, Funny)
Worthwhile Experimentation... (Score:5, Funny)
We could attach the "SCO Legal Team" to the bottom of a space shuttle, and find out what the radiation effects of reentry are on a pack of gravy sucking pigs...
Genda
Face... (Score:3, Funny)
related material (Score:3, Informative)
Now that high definiton microcams exist, I wish the astronauts would broadcast a little more...
In later news (Score:3, Funny)
Why not use the real thing? (Score:3, Funny)
Legally, as long as they didn't eat him they should be all right.
cheers, Sal
--
Sal
Writings: saltation.blogspot.com [blogspot.com]
Wravings: go-blog-go.blogspot.com [blogspot.com]
Waste of time and effort (Score:3, Funny)
The Fantastic Four by Marvel Comics.
I wonder which powers the Super Dummy will manifest next week.
"Oh look, it's the Invisible Thing!"
Virtual Crash Dummies (Score:3, Funny)
I wonder if there's another inflatable dummy that the guys use inside...?
Aliens (Score:2)
Aliens are gonna steal the human bones and start cloning on their own planet to make some slaves!!
Aliens are coming
Is the dummy wearing a spcaesuit? (Score:2, Interesting)
does the dummy have a name? (Score:4, Funny)
"I'm sorry, Dave. I can't let you in, Dave."
It's a Ferrari! (Score:2, Informative)
eerie (Score:2, Redundant)
Sounds like the start of a good horror movie -- Radiation mutates doll with human tissue into a monster with its own evil will. How do the astronauts sleep at night with the shadowy profile of a simulated human stuck to the outside of the SS.
ol' saw (Score:2)
Why not use animal meat... (Score:3, Funny)
I just can't get it out of my mind... (Score:2, Funny)
To test the effects of radiation on humans sounds like testing the effects of flies on Tickle Me Elmo...
Sure, they *say* it's for testing radiation.... (Score:4, Funny)
Keep an eye on it... (Score:2)
Re:A Nasa chief said on TV.... (Score:2)