R
rlock
Guest
For anyone who is interested in difficult maths.<br />If we had enough power, and a light enough craft, could we escape earth from an altitude of 40,000 metres? I ask because JP Aerospace is suggesting just that, and i would like to know if it is posable. Just for reference, to achieve Low Earth Orbit, you need to get to at least 7500 metre/second.<br />Does anyone know the maths that you would need to work this out? If so, please tell me. I am especially interested in the maths behind the ion engine because that seems to be the root of the problem.