Quote:
Originally Posted by Brett
What sort of mission did you have in mind for this lifeboat? 0.15 mi./sec. is plenty of delta-v to de-orbit from a low orbit, but it might not be enough for a lifeboat on a ship on an interplanetary orbit. On the other hand the large acceleration is not much needed. High acceleration is useful in takeoff, and in combat. But in most operations delta-v is much more useful. I suggest that you put a TL10 fusion drive in this TL10 ship, perhaps even a small one with a small fuel tank. That'll give you 20 mi./sec. if delta-v (enough to get you out of the situations that TL10 spaceship operations put you in), and I doubt the low acceleration will matter.
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This was aimed at getting down from orbit. Missed the bit about interplanetary orbits in all the talk about drop capsules.
I agree it doesn't need the high acceleration but chem rockets are cheap. As is you could build it at TL 8 or 9, the only change would be the electronics capabilities.
So for interstellar orbits it needs a fusion drive. Assuming fusion drives can scale down to 0.5 tons.
jeff