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US Plans Lunar Motel
OffTheLip writes "The US is planning to build a permanent lunar base which will support future visits to Mars. The living conditions on the moon presents a variety of challenges from medical to construction. Contingency planning would be critical but some feel the challenges presented on the moon will be less than Mars. The moon is closer to Earth, the atmosphere is less harsh and, unlike Mars, water does not exist. Is this the start of the next space race?"
my my my ... poor grammar. "unlike mars, water does not exist"? what the hell kind of statement is that? does that mean mars exists, but water does not?
If only someone had MacGuyver's cell phone number....
The laws of probability forbid it!
Yes, the atmosphere is much less harsh--in fact, in simulations, no one who has taken off their helmet and sampled the moon's simulated atmosphere has ever complained. Ever.
I am certainly glad it is less harsh than the atmosphere of Mars, since I still have that image of Shwarzenegger's eyeballs popping out of his head in "Total Recall" when he is exposed to the pre-terraformed atmosphere.
Perhaps hybrid Man-Beasts will be able to farm water on the Moon. I am looking forward to them filling some craters with farmed water, so I can go sailing there. The trade winds are always nice around the Sea of Stoopidity.
You're right, it's not astonishing. Thanks to the Apollo missions and more recent studies it was determined that our moon and many others in the solar system actually have very faint atmospheres. Though the Moon's gravity is very low it's just enough to hold a thin concentration of gas molecules very close to the surface:
http://www.windows.ucar.edu/tour/link=/earth/moonI do see your point, common sense would make it seem that it's just a vacuum. What with all the impact craters and the sky being always black over there.
Quantum mechanics: the dreams that stuff is made of.
"If only someone had MacGuyver's cell phone number...."
...hello?"
Ring, Ring
"What do you need?"
"A lunar base to support 50-100 people for 6-8 months."
"What do you got?"
"The cover from an old FORTRAN manual, some rubber tubing, and a chewing gum wrapper...
"Yeah, I'm sending the blueprints overnight FedEx, along with a working model made out of the contents of an ashtray outside the Post Office."
"Thanks!"
"It's what I do." Click.
"...However, Russell Kerschmann never forgot. He is a pathologist at NASA Ames studying the effects of mineral dust on human health. Both the Moon and Mars are extremely dusty worlds, and inhaling their dust could be bad for astronauts, says Kerschmann.
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"The real problem is the lungs," he ex-plains. "In some ways, lunar dust resembles the silica dust on Earth that causes silicosis, a serious disease." Formerly known as "stone-grinder's disease," silicosis first came to idespread public attention during the Great Depression when hundreds of miners drilling the Hawk's Nest Tunnel through Gauley Mountain in West Virginia died within five years of breathing the fine quartz dust kicked into the air by dry drilling--even though they had been ex-posed for only a few months. "It was one of the biggest occupational health disasters in U.S. history," Kerschmann says...."
"...Quartz, the main cause of silicosis, is not chemically poisonous. "You could eat it and not get sick," he continues. "But when quartz is freshly ground into dust particles smaller than 10 m (for comparison, a human hair is 50+ m wide) and breathed into the lungs, they can embed themselves deeply into the tiny alveolar sacs and ducts where oxygen and carbon dioxide gases are exchanged." There, the lungs cannot clear out the dust via mucus or coughing. Moreover, the immune system's white blood cells commit suicide when they try to engulf the sharp-edged particles to carry them away in the blood-stream. In the acute form of silicosis, the lungs can fill with proteins from the blood. He adds that it is as if the victim slowly suffocates from a pneumonia-like condition.
Lunar dust, which like quartz is a compound of silicon, is (to our current knowledge) also not poisonous. But like the quartz dust in the Hawk's Nest Tunnel, it is extremely fine and abrasive, almost like powdered glass. Astronauts on several Apollo missions found that it clung to everything and was almost impossible to remove. Once it was tracked inside the lunar module, some of the dust easily became airborne, irritating lungs and eyes...."
http://www.space.com/adastra/adastra_moondust_060
Finally a place far enough to go when my ex comes to town.
Fortunately, the article isn't quite so silly, but I'm hard pressed to find a reason why this article should take up space on the front page. It's not news. It's a very vague and somewhat scattered compilation of miscellaneous details that have been discussed over the past couple of years, with a sprinkling cheesy analogies and meaningless opinions on top. This fits better in the category of "Tidbits for people who don't care. Stuff the BBC wrote about last year"
Take a welding class sometime. There is much much much more to welding than the standard oxy-acetelyne torch.
:)
Oxygen is not required. There are certain high-strength welding processes that even require a vacuum to work.
They already need to deal with the problem of oxygen, hydrogen, and nitrogen getting into the welds, which is why stick welders have a thick coating of flux on the rods and MIG and TIG welders cover the weldment with a variety of inert or mostly-inert gasses.
There are other problems, of course.
Gentoo Sucks
Ah, but convection doesn't work, so you increase the possibility of any fluxes not properly floating to the top. You also have to wory about the flux evaporating and causing the solder to be propelled away from the workpiece. Also, some soldering and welding processes are designed to work inside the atmosphere, others are designed to work outside of the atmosphere.
:) Remember that some of the iron asteroids are basicly steel with sufficent levels of purity that you could slice 'em up with a cutter and use them as building materials with nay but a quick metalurgical assay.
p ace front and the how-much-gravity-do-we-need-to-not-die-young-in-sp ace front, we've done... ehrm... almost nothing since the 60s.
But, no, nothing on the ISS is being welded in space. It is sent up in large chunks and is bolted together, often times with motorized screws so that the astronauts just have to manuver the pieces towards each other and then command the berthing mechanism to grip. They have been doing some limited soldering experiments in the ISS, but never as repair work, just as tests for eventually doing repair work.
The biggest problem is that a spacewalk takes too much effort to set up. You have to plan it out. You have to pre-breathe oxygen. You have to replace all of the relevant consumables. The people doing them are scientists, not bridge workers.
You can only get so far with merely bolting stuff together. Eventually, you need to start doing fabrication work. Sure, it's easier to send up 1 ton of easy-to-fab raw materials, but it's even easier to grab a 100 ton iron asteroid and not bother calling back to Earth at all.
Some things will be much much easier in space. Ovens for example. A nice parabolic reflector to focus the sun's heat on a lump of metal can be made out of aluminised mylar and (titanium) chickenwire. You can use a refractory blowpipe to blow a bubble out of the lump once it's melted. Taking this to a logical extension, I could see large structures being manufactured using something akin to a glassblower's lathe.
But the problem is, on both the how-do-we-repair-things-and-build-new-things-in-s
Gentoo Sucks