Horten go-229
The Horten Go 229 was a late-World War II prototype flying wing fighter/bomber. It was the first pure flying wing powered by a turbojet and was the first aircraft designed to incorporate what became known as stealth technology. It was a personal favorite of the German Luftwaffe chief. Its speed was estimated at 636 mph with a ceiling of 49,213 ft. Only 3 were produced before the end of WWII.