[Spaceships]If Hyperspace is a fluid medium

[Anthony]

Originally Posted by jmurrell

That's what I was thinking. So I need to consider how high a thrust a human crew can sustain because accelerations up to 6 g's are possible.

More than a G over the long term isn't acceptable.

Originally Posted by jmurrell

And I need to consider near-c rocks as well. Perhaps there is a maximum mass that reactionless thrusters can propel above which the vehicles own gravity disrupts them. SM+13 is 300,000 tons, at near-c velocity is that a city-killer, an extinction event, or a planet-cracker?

Depends how near to C you are. However, note that a reactionless drive that operates by the principles you describe will have an energy requirement that varies with velocity relative to hyperspace, with the result that high acceleration will not be possible unless your velocity is very near zero or you have enormous power density available (it appears that 1 EP is on the order of 100 kW/ton. This will allow 1G acceleration if your velocity relative to hyperspace is 10 m/s or lower...).

Originally Posted by jmurrell

Ok, what if I postulate that black holes and quasars are transfer points between normal space and hyperspace. What problems and possibilities does that create?

Well, it sort of implies the creation of artificial black holes, assuming hyperspace drives are actually useful.