
The Bell X-22 was a ground breaking VTOL aircraft developed in the 1960’s and flew up to 1984. 2 of them where built and beyond the pivot mechanism featured some similarities to modern day quad copter “drones” While purely an X plane lessons learned from this program made it into modern production VTOL aircraft. https://en.wikipedia.org/wiki/Bell_X-22
Its one of the few X planes I remember as a kid getting into aviation. I’m sure James Cameron was inspired as well as the fictional SA-2 Samson in Avatar and the HK-VTOL in Terminator has a similar appearance.
One thing holding the design back is modern P.I.D. control logic hardware was just in its infancy back when this aircraft first became operational. P.I.D. is now the cornerstone method in electronic stability and control seen in modern unmanned drones. https://en.wikipedia.org/wiki/Proportional%E2%80%93integral%E2%80%93derivative_controller
Quite a few YouTube Videos on the X-22
No hits on Outerzone or Amazon.
With modern Drone components and 3D printers I’m sure creating a functional scale model would be quite possible for a crusader willing to take on the challenge.

























