The X-29 was one of the most bizarre aircraft ever built—a jet with forward-swept wings that seemed to fly backward. Designed ...

Swiss aviation pioneer Bertrand Piccard is developing a plane powered by liquid hydrogen after a much-hyped flight in 2015 ...

Thanks to upgraded engines and advanced computers that monitor weather in real time, Boom Supersonic achieved the holy grail ...

Not every experimental jet fighter made by the U.S. military would go on to reach production, for any number of reasons.