OT Came across this. Nuclear powered transport

May 02, 2017 5 Replies
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Interesting, sensible, and well informed piece. Not much about space, though:

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More detail on nuclear powered aircraft

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also
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and
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and the following page
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Or Project Pluto

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I particularly liked this one, it went into quite a lot of interesting detail.

But there is a lot of difference between megawatt scale prototype reactors operating for a few years and 100 MW upwards with potential to run for 50 years. Extending life really does transform the economics.

I would not disagree that a lot of probably unjustified effort went into sodium cooled fast reactors, although I remain a bit skeptical about some of the claims currently made for thorium.

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