The parameter you are looking for is delta-V, the total change in velocity that the craft can accelerate to. It relates to inverse specific thrust, which is the

The parameter you are looking for is delta-V, the total change in velocity that the craft can accelerate to. It relates to inverse specific thrust, which is the parameter discussed earlier, comparing slow heavy exhaust to fast light exhaust. https://wiki.kerbalspaceprogram.com/wiki/Cheat_Sheet#Delta-v_.28.CE.94v.29 https://wiki.kerbalspaceprogram.com/wiki/Cheat_Sheet#Delta-v...