A cutaway sketch of a 1950s design proposal for the USAF's Project 1794.
All photos: National Archives
A cutaway sketch of an alternative design proposal for the USAF Project 1794 prototype.
If the plans had followed through to completion they would have created a saucer, which could spin through the Earth’s stratosphere at an average top speed of about 2,600 miles per hour. Wow. It was also designed to take off and land vertically (VTOL), using propulsion jets to control and stabilize the aircraft. Admittedly the range of 1,000 nautical miles seems limited in comparison to the other specifications – but if you’d hopped on the disk in New York it could’ve had you in Miami within about 24 minutes.
Mac: Source, http://news.google.com/news/url?sa=t&fd=R&usg=AFQjCNFHMwhSgu-SjMgyAEKD-A1OKQOdqQ&url=http://www.wired.com/dangerroom/2012/10/the-airforce/