On Sat, Feb 21, 2009 at 3:37 AM, Onno Meyer <[email protected]> wrote:
> For surface-to-orbit craft, Vehicles has > * conventional rocket engines (little better than TL7) > * fusion rockets (different from those in Space 3E, unless > that is an unlisted typo) > * AM thermal > * Orion and nuclear pulse drive > * laser rockets > * gas core fission rockets > > Just how civilized is the planet, and how close to it do you > plan to operate? Without reactionless magic, all high-thrust > drives tend to be radioactive. > Vehicles is missing a trick here, it appears. It's quite possible to use air-breathing fusion rockets, which then use something else (water, hyrdrogen are the usual choices, but you can use other things) as reaction mass when you get out of the atmosphere. The exhaust from fusion rockets needn't be terribly radioactive. A D-3HE fusion reactor is fairly low radiation output. -- David Scheidt [email protected] _______________________________________________ GurpsNet-L mailing list <[email protected]> http://mail.sjgames.com/mailman/listinfo/gurpsnet-l
