Very impressive, I love the little details around the engines like the parallel stacks of girders and the sort of "plating" you made out of those small control surfaces, it reminds me of the overlapping plates used for armor in feudal japan. However, I will be making my own, no offense to yours. I simply won't download it yet and tempt myself to take it apart. Oh and one thing: you totally need a mass driver to kick this thing off the runway, that would be awesome in ways I don't know how to describe!