Message posted by Peter Merlin on September 13, 2006 at 15:36:59 PST:
Both NASA and the Air Force are working on developing hypersonic aircraft technology. The X-43A and X-51 represent the first baby steps toward development of an operational system.
In Reply to: Re: Aurora: Back In Black? posted by lone wolf on September 13, 2006 at 14:55:27 PST:
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