I concur with other list members who have mentioned it, that GURPS Vehicles
as an excellent and complete set of vehicle design rules that is pretty
realistic. You can sesign anything from Battlesuits to Star Cruisers
(though I haven't reality-checked those yeat :-)
I rather like the Range mods in GURPS. Yes, they shoot up and down very
quickly, but the Guns skill is easy to improve, and if you take into account
the various technical items that can compensate, as well as correctingoma
automatic fire. . .I agree, it's not elegant and the number crunching gets
out of hand at higher levels of destruction, but I still like it.
J Roberson