I lost the link at some point.
IIRC - the core was to be 1m in diameter, made from a stack of ten fissile grids, each 10cm thk.
do you know anything about this project?
Check out the website of this article or just go to my home page for a direct link, he has information on several past and future proposals for nuclear rockets and engines.
thanks.
please add me to your Space Ping list.