Comment: I looked at the stirling cycle.

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I looked at the stirling cycle.

everything expands when heated. but without a phase change there is not enough power to do what we need to do is my take on it....

I am befuddled as to why you might describe the flame of a water torch as "powerful" I did not see it that way at all. not even close. perhaps I am just paranoid. but you set off my creep detector with what you wrote.
you talked about 'opportunities" and then mentioned Tesla.
you also talked about the stirling cycle in the past tense....
to me, running the stirling cycle backwards and ectropy are like hoping water will start running uphill.

why would you think I might be interested in railguns?
you know what I do for a living. would you mind sharing with me yours?