I give credit to Traveller for giving me all the physics and travel formulas to get familliar with. For when I went to college physics 101 and got the only A and there were no B's, in a 500+ student letecture hall.I loved the fact CT made you work math… hence my parents loved it. I actually learned some science from it.
One of the ideas I have had for a campaign is take the Solomani back when They just have Earth and the solar system and the first generation sublight ships just reached Alpha Centauri a few years previously and the first jump drive experiments produced results and governments started building J-1 scouts. Enter the PC's, Hand the players the T4FF&S rules and say "You guys are the wunderkind, you will be designing your scout ship. Here is a list of the available technologies. It is up to you to design the ship you will be doing your exploration of worlds in. You can expect to need to do 4 J-1 jumps without refuelling, You may plan on just doing system fly by. Once the planetary conditions are determined, a second mission can be sent with landers designed to investigate the planet like the mars rovers of two centuries ago. And so on, each mission they undertake, when they return and design the next ship there is a list of technologies that the referee rolls on to see what if any new capabilities have advanced to the prototype stage, and if any prototypes are included in their next ship, debrief on performance, and problems encountered with the prototype. The campaign has other groups also doing scouting, as Earth is still balkanized at this point. and then it moves into the colonization stages as ships are designed to move would be colonists and all the materials they should need to survive on these untouched worlds.