Comment by andrewflnr

1 day ago

Hawking radiation, I think. Yes, this is at best speculatively feasible.

Probably more like a water wheel - matter spinning around the hole can be accelerated.

  • A spacecraft carrying a blackhole as propulsion means probably would have poor power to weight ratio.

    • Not at all. It would have one of the best power to weight ratios possible.

      Now as to whether you could use all that power....