My feeling is that (and I believe we were told this) that S2 (and even S1) where and are so much larger than the original vehicle and I would assume the planned propulsion just wasn't going to work with the new configuration. JMHO.
My gut feeling is based on recent PRs that no propulsion system they have as of yet hence the hire of the ZSW firm to develop one. How is the flight going take place to stratosphere by the end of 2005 without propulsion system? Please if I am such a wiener then please someone enlighten me. I'm being serious.
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