reply to post by Facefirst
It wasn't really based on the German guns in any meaningful way. The only thing they have in common is that they are both really big guns. Because of
the nature of the things, that makes them pretty similar in general. The Iraq gun was much closer based on Gerald Bull's earlier work for the US
government in project HARP, which had him launching small rocket assisted shells into space using a large gun made from two surplus 16'' battleship
gun tubes welded together. The iraq gun was so large that even the smaller test version had to be built onto the side of a hill, instead of on some
kind of gun carriage.
Bull's superguns don't really have anything in common with the Nazi's V3 superguns, which used a caterpillar arrangement to get more power. Bull's
guns were just really big guns.
Gerald Bull invented all kinds of stuff for artillery. I guess he isn't a household name just because artillery isn't a household appliance.