Since the early 1980s there has been a rumored top secret aircraft called the Aurora. Some still believe it exists, citing a $9 billion gap in the Air Force budget in 2006.
Explorers on Greenland found a P-38 aircraft used during WWII buried under 264 ft of ice. They dug it out and restored it to flying condition.
In 1961 Donald Reid built a Flying Submarine. It was demonstrated on 9 June 1964 where it dove to a depth of 6.5 feet (2 m) then flew to an altitude of 33 ft (10 m).
The F-117A stealth fighter shot down by the Serbians in 1999 was picked up on radar because it had opened its internal bomb doors – the open doors increased its radar profile, allowing a SAM missile crew to get a lock on.
A decade before the SR-71 first flew, the Military had a Mach 4.3 capable Ramjet created to test its own air defenses. It was so effective, it was cancelled to avoid embarrassing the military’s own air defenses any further. The man who designed it went on to create the SR-71 spyplane.
The SR-71 did more than just take pictures. It could aim its radar 45 degrees to the side, map the terrain like side scan sonar… intercept enemy comm and radar signals, record its entire flight path with infrared cameras… to prove to countries that it didnt violate their airspace.
One of the first flying cars was a Ford Pinto, which killed its inventor when the wings came off mid flight.
Iraqi insurgents intercepted video feeds of American Predator drones using a $26 piece of Russian software named SkyGrabber.