NASA has a toroidial fusion reactor design for space travel since 1998.
https://trajectory.grc.nasa.gov/aboutus/papers/AIAA-98-3591.pdf
And the TOKOMAK reactor in UK
http://www.ccfe.ac.uk/Tokamak.aspx
NASA has a toroidial fusion reactor design for space travel since 1998.
https://trajectory.grc.nasa.gov/aboutus/papers/AIAA-98-3591.pdf
And the TOKOMAK reactor in UK
http://www.ccfe.ac.uk/Tokamak.aspx