All rotating bodies exhibit gyroscopic properties. I look at it as does
Shytorque post #44
Helicopter Dynamics: Gyroscopic Precession
Gyroscopic precession in the case of helicopter rotors is a result of aerodynamic effects, not the cause of them
Rather than the precession be caused by an external force, such as blowing on the rim of the spinning disc, the force is being generated from within the spinning body itself, by means of aerodynamic effects,
Naval Air Training Command, Introduction to Helicopter Aerodynamics TH-57, page 4-5
406. PHASE LAG VERSUS GYROSCOPIC PRECESSION
The rotor system is not a gyro; however it sometimes behaves in a way that may be likened to a gyro. Just as an analogy is a comparison based on similarities in some respects between things that are otherwise dissimilar, phase lag in a non-rigid system can be compared to the effects of precession that occur in a rigidly mounted gyroscope. A gyro exhibits gyroscopic precession in response to an applied force, while the rotor system responds ‘similarly’ using the principle of phase lag discussed in the next section. The phenomenon of precession occurs in rigid rotating bodies that manifest an applied force 90 degrees after the application in the direction of rotation. The force is actually described as causing the rigid body to rotate as if acted upon by a different force 90 degrees later. Although precession is not a dominant force in rotary-wing aerodynamics, aviators must consider it because rotating rigid components may exhibit some of the characteristics of a gyro.
Figure 4-2 illustrates the effects of phase lag on a typical rotor disk when force is applied at a given point. A downward force applied to the disk at point A results in maximum downward movement (displacement) of the disk at point B. The association of a rotor’s movement with phase lag and precession stems from similarity to the effects of a force on a gyro rather than its similarity to an actual gyro. Both a gyro and a rotor are circular systems and respond to applied forces somewhat similarly, but through completely separate mechanisms. However, numerous writings and pilots use the terms interchangeably even though they are not the same thing.
https://www.faasafety.gov/gslac/alc/...ID=104&sID=449
Now, does this have any applicability to helicopters, after all they have lots of rotating bits?