heedm
Thanks for your more detailed explanation.
"Everything rotating body will display "gyroscopic precession". Doesn't matter how fast/slow it turns, doesn't matter it's mass, mass distribution, etc."
"The full beer can with a slowly spinning gyro will do what you want, but it will require a small corrective force to keep the intended tilt in the right direction. That small corrective force corrects the gyroscopes reaction to the impressed moment."
Agreed. In the UniCopter, it should not be a very strong force and therefore when integrated with the other rotors opposite "gyroscopic precession", it should dampen any oscillations in pitch and roll. [I previously erred and called it static stability when it is actually dynamic stability]