VASIMR plasma drive in GURPS...

[Ulzgoroth]

Originally Posted by Anthony

I suspect your math error was by using exhaust velocity = mps/tank, not exhaust velocity = 20*mps/tank. Dividing by 20 does yield your numbers.

Yeah, looks like that's what I did.

I'm really starting to hate spaceships for doing things like this.

So, do we think a power point is somehow hundreds of watts/kg, or do we think that ion drives run on magic pixie dust?