We're resorting to MODELS now?
And you wonder why they don't scale up?
70 years ago they were making models fly with bamboo blades, and "proving" their theories of flight, but when they built a real aircraft it was uncontrollable. Until they put hinges on the blades and used a swash plate. Because the toy models relied on gyroscopic precession, and real machines needed aerodynamics. Toss in some Reynolds numbers and see why.
Of course angular momentum is in there. The bigger the blade inertia, the more there is. Nobody is denying that. But it isn't relying on precession to fly the disc to a new attitude.
Dunno why we bother replying to your posts, as you are impervious to reality. Ask Nick.