Boeing publishes photos of secret 1960s stealth plane experiment

More than two decades before the first flight of the F-117A "Nighthawk" stealth fighter—and two years before Russian mathematician Pyotr Ufimtsev would publish a paper first defining the physics that would drive development of stealth aircraft—engineers at Boeing's Wichita, Kansas, facility performed tests on an experimental design that might have been the first stealth aircraft ever.
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