Monthly Archives October 2016

Yet another blog post on the SpaceX Mars announcements on Interplanetary Colonial Transport

Everyone is weighing in on SpaceX’s plans with suggestions of where they got things right and where they got things wrong.  Let me start off by saying that SpaceX knows more about rocket transport than I do.  There are essentially no areas that I have advice to give to SpaceX (although I know how on paper to economically send missions out of phase with the 26 months window…).  But some of the things they appear to be doing make sense to me and I will make what I think is the case for why he made some of the decisions
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Its always Hohman transfer time somewhere…

This post is about freedom.  Freedom to travel to and from Mars any time you want not just once every 26 months when the Hohman transfer window is open. To explain how to do this I am going to make a simplification and describe the Earth and Mars as round orbits.  This doesn’t change the result by much as you will see later.  So imagine both orbits are round and we are looking down on the Sun so that the Earth and Mars rotate clockwise.     We start out at E1 which is the Earth initial point.  This is outside
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