EmDrive and Cannae Drive Devices (Thrusters)

Just wanted to post an article on this. Looks like about 8-20 years ago this was getting some mainstream attention.
Might have been another big "investment" physics boondoogle:
============
Background links:
https://en.wikipedia.org/wiki/EmDrive

Report on the drive failing:  https://www.popularmechanics.com/science/a35991457/emdrive-thruster-fails-tests/

http://www.emdrive.com/
https://www.quora.com/What-is-the-current-status-of-Cannae-Drive-or-EmDrive-propulsion-systems

https://dsiac.org/articles/the-impossible-propulsion-drive-is-heading-to-space/

============

The Impossible Propulsion Drive Is Heading to Space

June 5, 2017 | Originally published by Date Line: June 5 on

The EmDrive, a hypothetical miracle propulsion system for outer space, has been sparking heated arguments for years. Now, Guido Fetta plans to settle the argument about reactionless space drives for once and for all by sending one into space to prove that it really generates thrust without exhaust. [The drive being sent into space by Cannae is not an EmDrive -it is a proprietary thruster technology that requires no on-board propellant and uses Lorentz Force imbalances created by the thrusters to provide propulsion.]

Even if mainstream scientists say this is impossible.

Fetta is CEO of Cannae Inc, and inventor of the Cannae Drive. His creation is related to the EmDrive first demonstrated by British engineer Roger Shawyer in 2003. Both are closed systems filled with microwaves with no exhaust, yet which the inventors claim do produce thrust. There is no accepted theory of how this might work. Shawyer claims that relativistic effects produce different radiation pressures at the two ends of the drive, leading to a net force. Fetta pursues a similar idea involving Lorentz (electromagnetic) forces. NASA researchers have suggested that the drive is actually pushing against “quantum vacuum virtual plasma” of particles that shift in and out of existence.

For additional information on the Cannae technology and upcoming mission, see: http://cannae.com

They have a .pdf on the EM drive thruster. Looks like it requires YBCO superconductors and "careful" construction. http://www.emdrive.com/IAC20212Gpaper.pdf