[Spaceships]If Hyperspace is a fluid medium

[Diomedes]

Originally Posted by jmurrell

1) Drag from this medium explains why FTL drives have a top speed rather than an acceleration.

Presumably drives would still have an acceleration, determining how fast you reach top speed.

Originally Posted by jmurrell

2) "Reactionless" actually use this hyperspace fluid as reaction mass.

That's basically how the Hyperdynamic Field switch works in SS7.

Originally Posted by jmurrell

Some questions for speculation:

Would reactionless drives be pseudovelocity?

Would their acceleration be felt by the occupants?

No and yes, respectively. With a normal drive the crew feels acceleration because the engines push on the ship, which pushes on the occupants. If you distributed the force throughout the ship (say, by generating a gravity well and falling into it) then there would be no felt acceleration.

Originally Posted by jmurrell

If hyperspace + normal-space are a closed system could the various conservation laws remain valid? Would this require a transfer of energy/momentum between hyper and normal space?

That might be necessary.