Abstract: The mechanism of gyro precession and its stability is an unresolved research question. It has long been widely believed that gyro precession is the result of heavy moments. But this does not completely agree with the experimental facts. This paper introduces the experimental phenomenon of gyro precession on the horizontal plane, proposes the law of rotational inertia and the law of microdeformation, and gives an empirical expression of the law of microdeformation. Combined with the principle of imaginary axis rotation balance and the law of conservation of momentum moment, the experimental phenomena of gyro precession are analyzed. The determination formulas of the gyro precession angular velocity and the rotation angular velocity and the relationship between them are given, and the conditions for whether the gyro precession can be restored to a stable rotation state under certain conditions are given. Gyro precession mechanism and its stability.Abstract: The mechanism of gyro precession and its stability is an unresolved research question. It has long been widely believed that gyro precession is the result of heavy moments. But this does not completely agree with the experimental facts. This paper introduces the experimental phenomenon of gyro precession on the horizontal plane, proposes the law of...Show More