Funny how the territorial disputes of the early 1900's eventually led to this stuff. Technology on the scale of the pyramids!
Like the original jet engine, it seems to be based, at least in part, on English research.
https://upload.wikimedia.org/wikipedia/ ... te4481.jpg
https://en.wikipedia.org/wiki/V-3_cannon
https://www.historynet.com/hitler-hoped ... pergun.htm
