I thought I would ask a question about how the launch ðÂݴv figures are calculated for Kerbin since I haven't been able to come to the answer myself. I have done the calculation for the transfer ðÂݴv added to the ðÂݴv required to combat gravity due to potential energy. This produces a higher number than what's possible because the gravity ðÂݴv will decrease as the craft rises. However since air resistance isn't factored into the equation I was using it should probably balance out. However for a 80km circular orbit I get about ðÂݴv = 5932.1614 as the total ðÂݴv. I get transfer ðÂݴv of 2278.9316 and a gravity ðÂݴv of 3653.2298. transfer ðÂݴv = 2278.9316 km/s2 gravity ðÂݴv = 3653.2298 km/s2 total ðÂݴv = 5932.1614 km/s2