I have decided to embark on the exciting endeavour to fly to EVE, land a space-plane, do science, and return with said space-planes. However, instead of slapping on a load of engines, and tanks, and see how far it can take me (my normal method), I thought I would try to do some mathematics to calculate exactly how much fuel I will need (even though the farthest I have ever been is to Duna). Either way, I cannot seam to get the calculations right. So far, I have been experimenting with said maths by having a single LV-N motor, n number of fuel tanks, and 40 Tonnes of space-plane. I know the maths is completely off because I've calculated that all the fuel I would need (for the return stage) is two MK1 jet-fuel containers - which cannot be right. So can I get you to walk me through the calculative steps to find out how much fuel I would need, and the method to calculate all other parameters for future calculations. Thanks