I have been reading The Hunt for Zero Point by Nick Cook and I am more convinced than ever that The Skunk Works have used technology from the Nazi secret project Die Glocke (The Bell) during WWII to power the new project Aurora spy plane.
Read more about my views on German technology in an interview I did on the Alternative History Fiction website.
The extraordinary Die Glocke is reputed to have used anti-gravity technology, though it is likely to have caused many deaths, directly, and indirectly when the SS murdered all the scientists working on the project.
If you are interested in secret aviation technology, you might like one of my Wartime aviation novels.
Screaming Angels explores the causes of the MiG-15s superiority at the beginning of the Korean War and includes a chapter about the De Havilland Mosquito.
Attack Hitler’s Bunker! is about a raid using composite Hawker Hurricane and Short Stirling aircraft in a daring raid on Hitler’s Bunker in Berlin.
December Radio is about secret German technology during WW2 and features detail on Eugen Sanger’s Orbital Bomber, sometimes called the Amerika Bomber, which could skip along the Earth’s atmosphere to reach New York and reach Japan, making it the forerunner of the American Space Shuttle.
Explore these books under the main menu item Wartime (Aviation) Series.
Or read about Die Glocke (the Nazi Bell) which used the prototype technology for Project Aurora, in my subscription novel Rip.