I can't seem to find a specific answer anywhere....

I wonder if it means using the radioactive fuel to power the electronic equipment, purely via natural decay, but also using the same fuel to power a fission reactor-based engine (thrust)....

Or, perhaps, another 'mode' is detonating an actual small atomic bomb for extra thrust? Or.... fusion is involved?

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    $\begingroup$ Can you post a link? It's hard to know exactly what you are asking. $\endgroup$
    – GdD
    Jan 23 at 15:57
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    $\begingroup$ ...what research have you done? I'm struggling to figure out how you got to the Orion interpretation, let alone fusion, or why you'd build a system that incorporates a reactor but is limited to decay heat. $\endgroup$ Jan 23 at 16:17


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