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Science and Technology "Somewhere, something incredible is waiting to be known." - Carl Sagan.

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Old April 3 2012, 03:21 PM   #16
Asbo Zaprudder
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Re: How do you make a complete carbon-cycle in a spacecraft?

Urge wrote: View Post
Im thinking "DDR in space" - specially because the ships captain is a stalinist dictator who flee towards Mars (in a very slow spacecraft) with his ministers (and a large crew off course), because the UN hate him.

All the other people who have quarreled with the UN in the past are already there, so Mars is a being populated by strong-minded dictators of various kinds.

Please dont copy the idea :-)
Sounds like Dune.

Remember, the spice must flow. He who controls the spice, controls the universe!
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Old April 10 2012, 12:10 AM   #17
publiusr
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Re: How do you make a complete carbon-cycle in a spacecraft?

The ship needs to be pretty big, one would think.
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Old April 12 2012, 09:31 PM   #18
Santaman
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Re: How do you make a complete carbon-cycle in a spacecraft?

http://en.wikipedia.org/wiki/Stanford_torus

http://en.wikipedia.org/wiki/Island_Three

http://en.wikipedia.org/wiki/Bernal_sphere

Add engines to either one of these and yer good to go..
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Old April 16 2012, 04:32 AM   #19
PurpleBuddha
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Re: How do you make a complete carbon-cycle in a spacecraft?

Urge wrote: View Post
In startrek they probably have some sort of machine that splits CO2 into C and O2 - but there exist no such machine right now, does it?
This part interests me. I assume that separating carbon from oxygen artificially would currently require a lot of energy so as to make it impractical. Right?

Not knowing much about plants myself, what type of chemical process occurs in the plant to do the same thing? Can this potentially be artificially replicated in a way that is practical and efficient?
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Old April 19 2012, 11:02 AM   #20
Asbo Zaprudder
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Re: How do you make a complete carbon-cycle in a spacecraft?

In the most general terms, photosynthesis in plants creates glucose (a simple sugar):

6 Carbon Dioxide + 6 Water + Light → Glucose + 6 Oxygen

A great deal of research is being done into artificial photosynthesis, but I can't say how far it is from being commercially viable. It appears that natural photosynthesis might rely on quantum entanglement effects to boost its efficiency, and plants are much better at capturing carbon dioxide at atmospheric concentration than are man-made devices that emulate photosynthesis.
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