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starship-design: Black holes and the rocket equation
L. Parker writes:
> Let's nip this one in the bud early on, do you guys want to make a stab at
> guessing the MASS of a black hole? Tell me how you are going to get enough
> thrust out of the black hole to MOVE it....
Who needs to guess? Black holes can be any size you want. Unless a
successful quantum gravity theory puts a minimum limit on black hole
size based on the size of a quantum of space, there's no size minimum
and hence no mass minimum,
If I remember correctly, R = G * M/(2 * c^2): R = Schwarzchild radius, M
= mass, G = gravitational constant, c = speed of light.
Small black holes also make better thrusters; they evaporate much, much
faster. Any stellar-sized black hole doesn't evaporate quickly enough
to be useful for that purpose.