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http://www.physorg.com/news7286.html
it doesn't even mention what the other concepts they are working on!
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Here is some more on that issue:
New Advances for Liquid-Fueled Rockets
Current rockets burn a small amount of fuel into preburners which power pumps that force the rest of the fuel into the combustion chamber.
A new strategy will be to run all the fuel through the preburners which will create higher pressures, and should give better performance from the rocket.
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i remember spacedaily having a story about a spike rocket nozzle that maximizes thrust throughout the rockets flight, so you know there is some real possibility for even the falcon rockets to get up to orbit. I mean with all the nanotech companies developing right now and the coming space tourist companies, I think there is some real possibility for a private colonization effort around the 2020 timeframe.
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http://www.space.com/php/multimedia/ima … it%3A+NASA
this rocket engine has been successfully tested already!
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