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Overcoming Gravity with the X-13 and ZEL

There’s an old engineer’s joke when something gets dropped. They say “gravity check, still on.” Now I’m not going to distinguish between whether that’s an old joke or a joke for old engineers, but either way, aviation is all about...

A Booming Controversy

In 1999, Al Blackburn wrote a book, Aces Wild: The Race for Mach 1, and from it an article for the Smithsonian Air and Space magazine. Both are clearly the culmination of a lot of research into a fascinating subject, and I don’t want to steal his work, so what...

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