nutation

Influence of elasticity of cardan gimbals on Nutation drift of gyroscope

万向支架弹性对陀螺仪章动漂移的影响

In some liquid filled spinning systems, although top stability conditions of frozen liquid are satisfied theoretically, and the top nutation is not of resonant instability due to liquid inertia wave, angular motion of the rotating liquid filled system is not stable in experiments.

一些旋转充液系统，尽管理论上满足固化液体系统的陀螺稳定性条件，并且也不在章动与液体惯性波的共振区域内，但是在实验时系统却出现运动不稳定。

Several different kinds of mechanical methods such as celestial rotation, tidal force, precession and nutation, etc as well as its corresponding gravity convergence shape and movement characteristics by gravity are discussed.

即研究天体表面物质所受到的重力指向天体中心点的集合所形成的形状。深入讨论了几种不同性质的力学方式如天体自转、引潮力、进动及章动等，所对应的重力收敛特性、。