Atomic Rocket Page

This site was mainly intended for science fiction authors who wanted a little scientific accuracy (Matthew Lineberger is the first SF author who wrote a novel inspired by this website). But anybody who is interested can play with the toys contained within, designing their own Planet Rangers Rocketships. It is assumed that the reader has enough knowledge to know the difference between a star and a planet, high school mathematics, and enough skill to use a pocket calculator. Computer spreadsheet and computer programming skills are a plus, spreadsheets in particular will make your life much easier.

http://www.projectrho.com/rocket/index.html