Jan 122015
I have been plugging away on USSP#2, pretty much to the exclusion of all else, for a little while now. Shown below is the current status of the diagrams. USSP#2 has substantially more diagrams than the usual US Aerospace Projects publication. The empty spots are for two further spaceplanes. I really wish I was a faster draftsman, but there it is.
Generally I release these sort of things two at a time, but this might be released on its own.