That's impressive. I've had the opportunity to be involved on the fringes in scramjet development - it's a tremendous technological challenge. Lots of supersonic shock waves bouncing around inside the engine...they're a real pain in the kiester.

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“A man who lies to himself, and believes his own lies, becomes unable to recognize truth, either in himself or in anyone else." Fyodor Dostoevsky
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"Public office is the last refuge of the incompetent." Boies Penrose
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"Just an old sweet song keeps Georgia on my mind" Stuart Gorrell