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Space advocates will recall the X-33 was cancelled when its carbon composite
propellant tanks failed. But there may now be high strength aluminum alloys
that can fill that role. Then in fact the SSTO VentureStar may now be
possible:
DARPA's Spaceplane: an X-33 version, Page 2.
https://exoscientist.blogspot.com/2018/ … age-2.html
Bob Clark
Old Space rule of acquisition (with a nod to Star Trek - the Next Generation):
“Anything worth doing is worth doing for a billion dollars.”
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