Do you mind if I ask you what your professional credentials are? I tried to look you up online, but "Byeman" appears to be just some kind of self-important CIA/NRO related pseudonym, at least according to Wikipedia, rather than your actual real name. My abridged CV can be found at https://www.linkedin.com/in/martinjbayer?trk=people-guest_people_search-card - where can I find yours to substantiate/validate your claim?My statement is just as valid and substantiated as yours that the "Rockwell concept was the most logical and credible".Taking into account the widely evidenced actual fact records as for example decribed at https://en.wikipedia.org/wiki/Lockheed_Martin_X-33, what exactly is your supporting documented evidence for your simpleton unsubstantiated bald-faced two word counter factual assertion?Not trueThe LM X-33 was an engineering abomination with a needlessly complicated non-cylindrical composite liquid hydrogen tank structure that ultimately tanked (pun fully intended) the concept. As I stated before in this forum, the Rockwell concept was the most logical and credible of the X-33 contenders, .Just a simple pipe dream, start up the x33 venture star program again and launch it from the stratolaunch.
You can scale up the X33 startweight to 250 tons, so who nows it wil make it to orbit.