The Difference and Parity of Two Kinds of Dynamical Property of Homogeneous Disc Gyroscope Rotor

Based on the gyro approximate theory and the relative motion dynamics theory, two topics are discussed first, they are: (1) precession of the Two-degree freedom gyro, (2) rotation of rotor around the single-degree freedom axis when a gyro axis is forced to rotate around an axis which lacks degree of freedom in a single-degree freedom gyro. And then the difference betWeen the principle which leads to these two kinds of gyro dynamics property and the law of motion is pointed out.