WeirdWings
 Image Credits: [NASA / Patrick Wright](https://images.nasa.gov/details/EC99-45110-4) ([Media Usage Guidelines](https://www.nasa.gov/multimedia/guidelines/index.html)) _The Proteus high-altitude aircraft incorporates a gull-wing shape for its main wing and a long, slender forward canard._ Designed by Burt Rutan, obviously. For more details see its [Wikipedia](https://en.wikipedia.org/wiki/Scaled_Composites_Proteus) page.
Image Credits: [NASA / Carla Thomas](https://images.nasa.gov/details/ED07-0164-05) ([Media Usage Guidelines](https://www.nasa.gov/multimedia/guidelines/index.html)) [Technically it's a UAV](https://en.wikipedia.org/wiki/Boeing_X-48).
Image Credits: [National Museum of the United States Air Force](https://www.nationalmuseum.af.mil/) (Public Domain), VIRIN [060829-F-1234S-005](https://web.archive.org/web/20150522230408/http://www.nationalmuseum.af.mil/shared/media/photodb/photos/060829-F-1234S-005.jpg) While the "six turning four burning" B-36 already is a decent WeirdWing, this modification for the [FICON](https://en.wikipedia.org/wiki/FICON_project) project is probably the cherry on top.
Image Credits: author unknown, original publication 1922 France (Public Domain) Initially intended as marine recon / bomber this machine only made a few test flights. More images of this beast on [destinationsjourney.com](https://www.destinationsjourney.com/historical-military-photographs/besson-h-5-french-flying-boat/). More info on [Wikpedia](https://en.wikipedia.org/wiki/Besson_H-5).
The No. 1 X-29 advanced technology demonstrator aircraft banks over desert terrain near NASA's Ames-Dryden Flight Research Facility. Image Credits: [NASA](https://web.archive.org/web/20090425014907/http://www1.dfrc.nasa.gov/Gallery/Photo/X-29/HTML/EC87-0182-14.html) (public domain) ---  _[This photo](https://images.nasa.gov/details/EC91-491-07) shows the X-29 during a 1991 research flight. Smoke generators in the nose of the aircraft were used to help researchers see the behavior of the air flowing over the aircraft. The smoke here is demonstrating forebody vortex flow. This mission was flown September 10, 1991, by NASA research pilot Rogers Smith._ More info on [Wikipedia](https://en.wikipedia.org/wiki/Grumman_X-29)
Image Credits: Jozef Tóth ([CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/deed.en)) This particular plane served as Testbed for the M-601 engine used for the Let L-610.