It analyses the relation by Newton's iteration method, which shows the select of the time step has a relation with the mesh size and dispersionerror.
利用牛顿迭代法对其进行了全面的分析，发现了时间步长的选取与网格、色散误差的大小有一定的联系。
2
Through the analysis of error and process, we gave some improving advice about the theoretical design which can control the dispersion errors or retard errors under 5 percent.
It may be used to determine the effects of bore curvature thermal deflection of the tube eccentricity of the projectile interior ballistics data and construction of gun tube on dispersionerror.