Six months after its maiden flight ended in the aircraft self-destructing, the US Defense Advanced Research Projects Agency (DARPA) says it knows what went wrong with the Falcon Hypersonic Test ...
(Yes, it's on foxnews site but that's the link a friend gave me) Unmanned craft, launches on a rocket and then separates and flies at hypersonic speeds (mach 20 or 13,000mph). For a comparison of what ...
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