Here’s a design for a seriously large fusion rocket.
Daedalus was a serious design by the British Interplanetary Society, for an interstellar flyby mission that would reach Barnard’s Star in 50 years.
There’s some more info in this video I made:
Here’s a BIS page on the project:
And another nice article by David Darling.
This is something I am still working on. It’s an alternate design for the famous Wheel Station, much more disk-like.
All the outer sections will be completely replaced, I’m still trying out ideas here. The design is based on “The 2001 File”, the Harry Lange archive.
I don’t intend to get the viewpoint as close as is shown in the near image.
The hub is pretty much the same as the ends of the core as used in the original film. The dark ribs on the inside of the outer sections will have to go too.
Kuck’s Mosquito is a design for a craft that would mine water from asteroids, comets, or maybe the moons of Mars. The delta-V required is MUCH less than hauling it up from Earth to orbit.
It would work by drilling down into ice, melting it, then sucking up the liquid. The water can then be used for drinking, or could be split into Hydrogen and Oxygen.