DIY Space Suit Testing 37
Kristian von Bengtson is one of the founders of Copenhagen Suborbitals, a private organization dedicated to cheap, manned spaceflight. He says, 'This week the space suit branch of Copenhagen Suborbitals from the U.S. is visiting and testing suits in capsules is being performed." The testing process is being chronicled in a series of articles at Wired. You can take a look at some images of getting suited up, and read about the process in detail. von Bengtson writes, "I have to say this suit is incredible, and wearing it today was a remarkable experience. Not only did it fit like a neatly tailored jacket, you instantly become very aware of isolation, the risks involved in this mission, and the complexity of the suit when the 'visor down' command is effectuated. Even though you have a bunch of people next to you – operating life support and with cameras – you feel all alone and all sounds disappear. They’re replaced by the hissing of the breathing-gas and pressure-gas." There's another article about getting into and out of the capsule while in the space suit, which is quite a complicated procedure. "All three of us tried to perform the fast egress and this was a very intense experience. While pressurized inside the capsule (app 1 psi) arms and legs want to expand your body like a balloon and even just reaching out toward the hatch opening was almost impossible. Each of us spend at least 30-50 seconds on this procedure desperately trying to reach toward anything nearby, feet and leg kicking and general nonsense body-wobbling. A simple procedure like this required all the power and muscle we had while John Haslett tried to keep up with dumping CO2 and adding breathing gas."
ground control calling Major Tom (Score:1)
They're far from simple (Score:5, Informative)
Spacesuits are a lot more complicated than they look, NASA's suits have a lot of sealed bearings and straps and bellows below the surface to allow easy movement and reduce the ballooning effect:
http://www.wired.com/design/2013/08/an-insane-look-at-the-inside-of-space-suits/?viewall=true [wired.com]
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Such designs are in use for one-man submersibles.
http://fuelfix.com/files/2012/04/OTCphotoLogo.jpg [fuelfix.com]
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Mass to orbit is horribly expensive, every kg counts.
A "mini space ship" might not be much heavier than a space suit, but it'd have to fit inside the main space ship, which would then be heavier.
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but it'd have to fit inside the main space ship
Why? One of the advantages of a "ship-suit" is that it can remain outside the main capsule or module's pressure-vessel, even easier than a "hard suit" since there are less moving parts to service.
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The suit Cameron and Co. are building isn't for extra vehicular activity. It's a second, redundant layer of protection for the astronaut while he's in the capsule and beeing boosted towards space - sort of like the drivers suits used on race tracks.
So, in short: Different problem, different viable solutions.
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I was responding to the ThreeKelvin's comment, not the article. So no argument with your last line.
sort of like the drivers suits used on race tracks.
A more immediate analogy is the pressure suits used in the early "edge of space" X-plane and balloon flights, and the bail-out suits worn by post-Challenger shuttle astronauts. Very similar appearance too.
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I'm fairly certain ThreeKelvin's original comment was in reference to the article. ;)
- And your analogy is definitly better.
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I'm fairly certain ThreeKelvin's original comment was in reference to the article. ;)
[Facepalm] D'oh! Sorry.
I meant I was responding to what I took as more general objection to "ship-suits", ie your reply to Anon's comment, but I wasn't not saying that a ship-suit would work for the team in the article.
If your response to Anon was purely to the utility of ship-suits for this particular application, then I was doubly wrong (or triply, I'm not sure what I'm up to.)
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If your response to Anon was purely to the utility of ship-suits for this particular application, then I was doubly wrong (or triply, I'm not sure what I'm up to.)
No worrys. I got a good smile out of it. ;)
An external "ship-suit" could perhaps be usefull in some cases, e.g. on the ISS for EVAing, but I'm not really convinced. The only reason I can think of to send an astronaut out to do something is because her hand/eye coordination and manual dexterity is required on a particular spot. (otherwise they'd just send a robot) So, the "ship-suit" would have to have sleeves and gloves with which she could manipulate objects as easily as from a normal space suit.
Tethering
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Another solution might be a force field [nasa.gov] to stop radiation and a method to trap air around a person like some ants do when going underwater [wikipedia.org]. We can in theory also do wireless power transfer [mit.edu], so maybe this could provide the juice to keep a system like this going on a backpack like device you could use in space, Mars, titan, or any other sufficiently low g environment that you could move on. Wonder why sci-fi doesn't do this much?
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NASA makes things 1000 times more complicated than they need to be. Its why a space toilet seat costs $100k to manufacture and $1 billion to design, but looks like a $10 seat you can get a Home Depot. I had a friend who worked in aerospace that spent a year in R&D for a nut for the Canadarm that he would swear you could just buy at the hardware store.
Agreed that a spacesuit is slightly more complicated than a toilet seat, but private enterprise is showing they are capable to reaching space for far che
Re:They're far from simple (Score:5, Informative)
Your so-called toilet seat in space is hardly what you think. There are a number of problems with putting an ordinary toilet in an orbital spacecraft that is in a microgravity environment, not the least of which is that water isn't found in the toilet.
Watch this video and tell me that it can be solved with a $10 seat purchased at Home Depot:
http://www.youtube.com/watch?v=m1DYJIIqyQA [youtube.com]
There are also reasons why you need to spend months trying to find the right nut for a device, even if it may be something you pick up for a nickle at a local hardware store.
No doubt there is some substantial management overhead on space projects done by NASA. Just look at how much money it cost to build the Falcon 9 as opposed to the SLS (Sometimes called the Senate Launch System... comparable payloads and overall missions, and the SLS still isn't flying in spite of new incarnations that keep popping up and more money spent on them). I agree that the current culture at NASA tends to gild the lily, but it is also important to note sometimes there is increased complexity simply because stuff is happening in space. Furthermore, low production rates for stuff going into space means that you don't have economies of scale for components like you would for toilet seats purchased by people all over the world.
Besides, would you actually use a $10 toilet seat purchased at Home Depot? Those things last barely longer than it takes to screw them onto a toilet in the first place. Certainly don't turn one of those over to a bunch of teenagers, as they will destroy the thing in no time flat. Even at Home Depot there are much higher quality toilet seats to purchase, where money counts even for a mass consumer item like that.
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Yet, in Soviet Russia they didn't. They did use a ball point pen though. Graphite from pencils tends to flake off and short out contacts on switches in space and cause fires where you don't want them.
See also: http://www.snopes.com/business/genius/spacepen.asp [snopes.com]
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Yet, in Soviet Russia they didn't.
From your own link:
"Both U.S. astronauts and Soviet cosmonauts initially used pencils on space flights"
Graphite from pencils
Which is why you use wax pencils.
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The cost of space rated hardware is the cost to understand the load case, not the cost of the item.
RAH wrote the text book on this (Score:4, Informative)
Have space suit will travel
Perspective (Score:1)
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so I expect to [see] them succeed in the near future.
Or die brilliantly.
Hope you're not claustrophobic.. (Score:2)
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Read NASA's "Dressing for Altitude" (Score:3)
An excellent historical perspective (with plenty of photos) on the development of pressure suits for both aviation and space use.
http://www.nasa.gov/connect/ebooks/dress_for_altitude_detail.html [nasa.gov]
Yes, this is hard to do.
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An awesome ebook that really details what the big problems are with spacesuits, or a pressure suit, really.
It's mobility - and it's not mobility while deflated (when you see those photos of early astronauts playing golf or baseball), but when inflated.
So much technology has been used in contro
Awesome dedication to sci/eng by enthusiasts (Score:2)
This is a really awesome example of dedication to science and engineering by enthusiasts.
They don't mention it (much), but these guys are risking their lives. It's certainly possible for all the tech safeguards and personal attention to safety to go wrong and for someone to die.
I bet the professionals will call this "unnecessarily risk", but that's not really accurate. Sure, it's money-limited, but that doesn't mean that the people involved aren't just as strongly concerned with safety as the professional
Suddenly.... (Score:2)
. ...I actually feel bad for Darth Vader.
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Space Activity Suit (Score:2)
http://en.wikipedia.org/wiki/Space_activity_suit [wikipedia.org]
Space suits in general and the SAS in particular are why I no longer give a rat's ass what happens to NASA. Cut their funding, Congress orders them to start launching their rockets upside-down, I couldn't care less. NASA had a working prototype of a replacement for those injurious, exhausting, and dangerous inflatable suits 40 goddamn years ago, and they flushed it down the toilet and haven't looked back since.
The future of the human race is in outer space,