[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: starship-design: Staged Fusion Power
N. Lindberg wrote:
> I was reading some of the numbers for the various engines that
> could be used to power a starship, and I noticed that every fusion
> reaction shown only used its fuel once. If a closed powerplant (not
> rocket) could be run hot enough, there's no reason I can see not to run
> the fuel up to heavier elements instead of just throwing it away after it
> turns to helium. Note: I didn't do any math for this one, it might be
> impractical. Although I realize that a scheme like this would require
> reactors far superior to a today's can't-quite-ignite tokamaks, it might
> be doable in fifty years. The power from this type of reactor could be
> used to power a laser or ion drive, the latter prehaps adding the
> reactor exhaust to the Xenon reaction mass.
> The upshot is, exhaust recycling could reduce the amount of fuel
> required by which is one of the major hurdles of starflight.
> Best Regards,
> Nels Lindberg
Could you combine fusion and fision to produce a continous reaction?