So, as those who follow my Google+ account will know, I use PTC Mathcad to do the various calculations behind the scenes to reality-check my work, starship designs, orbital parameters, etc., etc. And being the kind and generous soul that I am, I thought I might clean up and share my tools for the benefit of, well, everyone who wants to do this kind of thing.

Here, then, is the first of those cleaned-up sheets – a basic calculator that does the ground-to-orbit-or-escape delta-v calculation, as illustrated by Atomic Rockets here.

Here’s what it looks like (printed as XPS); and here’s the live version for those of you who have PTC Mathcad (requires only the free-for-life Express version).