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Ten ways to traverse deep space
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Space Station Commander ![]()
Joined: Wed Aug 18, 2004 8:47 am
Posts: 517 Location: Science Park, Cambridge, UK |
Liquid hydrogen is already manufactured as fuel for some large rockets (not nuclear - it's burnt with liquid oxygen). For example the Saturn 5 used cryogenic H2.
If someone can come up with a more cost effective way of making H2 from waste that would be good, but the main problem with using H2 as a fuel on earth is storage. It escapes very easily from containers as the molecule is so small. Methane is already captured from waste sites and in some cases used to power electricity generators to put power back in the the grid. |
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Launch Director ![]()
Joined: Sat Dec 11, 2010 4:08 pm
Posts: 12 |
what if this sugar waste can constant produce h2 while you use and just topping up the waste can keep you burning for ages then when out sleep few hours tanks full away you go again replnishing fuel supply is what maybe produced which could come in handy on long flight and this aint an experamental idea it is in flow but who will go against the oil countries to make this plan a free fuel source uk wont look at the loss of tax if they admitt it that would mean pay cuts for polticians that we already dont need while they keep chaos we dont look at them doing jack for there millions in wages
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Space Station Commander ![]()
Joined: Thu Oct 27, 2005 7:44 am
Posts: 622 Location: Haarlem, The Netherlands |
The Space Shuttle also runs on liquid hydrogen (at least, the main engines do), as does the Ariane 5 launcher. Hydrogen can be made by hydrolysing water, so all you need to make it is two electrodes, an electricity source, and a bucket. As James said, the problem is in storing it.
_________________ Say, can you feel the thunder in the air? Just like the moment ’fore it hits – then it’s everywhere What is this spell we’re under, do you care? The might to rise above it is now within your sphere Machinae Supremacy – Sid Icarus |
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Space Station Member ![]()
Joined: Mon Feb 25, 2008 9:51 am
Posts: 420 Location: Vienna, Austria, Europe, Earth |
Sorry for a little bit off-topic:
@ tattooedfreak I think it is an interesting discussion that is created by your ideas and questions. However, I'm having a VERY hard time understanding your posts. Would you mind and at least try some kind of punctuation? Oh and if you change from one thing to another, you should start a new paragraph. Thx! _________________ pride comes before a fall |
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Space Station Commander ![]()
Joined: Mon Dec 18, 2006 11:15 pm
Posts: 598 Location: Columbus, GA USA |
JamesHughes wrote: If someone can come up with a more cost effective way of making H2 from waste that would be good, but the main problem with using H2 as a fuel on earth is storage. It escapes very easily from containers as the molecule is so small. Not a problem for a prime lifter to LEO, the tank only has to hold the H2 for a few hours at most while fueling and during asset. There are a couple of promising chemistry answers for long term containment of liquid H2. A coating that binds with hydrogen similar to how a layer of oxide protects the underlying Fe on a steel structure. Also there is keeping the H bound with carbon as a... hydrocarbon until needed and then using a catalyst to separate it or simply burning and exhausting it with O2. |
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Space Station Commander ![]()
Joined: Wed Aug 18, 2004 8:47 am
Posts: 517 Location: Science Park, Cambridge, UK |
JamesG wrote: JamesHughes wrote: If someone can come up with a more cost effective way of making H2 from waste that would be good, but the main problem with using H2 as a fuel on earth is storage. It escapes very easily from containers as the molecule is so small. Not a problem for a prime lifter to LEO, the tank only has to hold the H2 for a few hours at most while fueling and during asset. There are a couple of promising chemistry answers for long term containment of liquid H2. A coating that binds with hydrogen similar to how a layer of oxide protects the underlying Fe on a steel structure. Also there is keeping the H bound with carbon as a... hydrocarbon until needed and then using a catalyst to separate it or simply burning and exhausting it with O2. I think the problem in the case being discussed is that the production rate of the H2 would be pretty low, and you have to store it over a long period. I guess though, there will be no real difference from how it is stored long term now. Isn't there some research in to using Nanotubes to store it - seem to remember reading that somewhere. |
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Launch Director ![]()
Joined: Sat Dec 11, 2010 4:08 pm
Posts: 12 |
could they not concentrate the the sugar waste into small cube form then and poss the bio chem to such a degree that it would take less space
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Space Station Member ![]()
Joined: Mon Feb 25, 2008 9:51 am
Posts: 420 Location: Vienna, Austria, Europe, Earth |
*digs out an old thread*
Sooooo, looks like the amount of available energy is not preventing the Alcubierre drive at all! http://news.discovery.com/space/warp-dr ... 20917.html Now we just have to solve the "tiny", "trivial", other problems associated with the warp drive _________________ pride comes before a fall |
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Space Station Commander ![]()
Joined: Mon May 31, 2004 9:47 pm
Posts: 727 Location: Yerushalayim (Jerusalem) - capital of Israel! |
Actually, I think that it is possible to make the warp drive/ Alcubierre drive even more plausible - just use it to send information. I'd imagine that the power constraints would fall if it was restricted to just a few photons, which carried information. Photons don't have that much mass, after all.
(yes, that is tongue in cheek) _________________ “Once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been, and there you will always long to return.” -Leonardo Da Vinci |
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Space Station Member ![]()
Joined: Sun Jan 17, 2010 2:21 pm
Posts: 271 Location: B.O.A. UK |
SuperShuki wrote: Actually, I think that it is possible to make the warp drive/ Alcubierre drive even more plausible - just use it to send information. I'd imagine that the power constraints would fall if it was restricted to just a few photons, which carried information. Photons don't have that much mass, after all. (yes, that is tongue in cheek) _________________ Someone has to tilt at windmills. So that we know what to do when the real giants come!!!! |
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Space Station Commander ![]()
Joined: Mon May 31, 2004 9:47 pm
Posts: 727 Location: Yerushalayim (Jerusalem) - capital of Israel! |
Well, the thing is, information transfer at beyond light speed is something very very practically useful, in and of itself. And once you start doing that, all you need is improvements to make a spaceship, not a complete revolution, like you need now.
_________________ “Once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been, and there you will always long to return.” -Leonardo Da Vinci |
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