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4/11/2013 1:37:15 PM
3
We already have a perfectly good xenon ion drive that can reach similar speeds (albeit over a really long period), we don't really this drive right now. If the scientists are that desperate though, they should probably contribute their efforts towards making fusion feasible before going off on this tangent.
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You're kidding with the "we don't really need this drive right now" aren't you?
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Ion drives take years to accelerate. This takes days, absolute maximum. If you read the article, one of the problems of this drive is that we need to keep the fusion self sustaining.
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Time isn't really a concern for satellites and other artificial bodies, unless we're aiming for human spaceflight, which I personally can't see right now, with the increasing marginalization of NASA and the economic constraints they work under. I reiterate - they should focus on devising a fusion process with a positive energy output rather than their project. We haven't even come up with any methods to make fusion sustainable, and they're talking about miniaturising it?
