The Study of Ballistic Calculation in Finite Particles Model of Flexible Body

The movement equation of rocket's center of mass and it's end point is set-up,and particle of flexible body's movement equation is established too.And then the continuous equation for ballistic calculation is deduced,the expression of matrix equation to calculate every flying unit's pull force is given.Flow chat of computing programe is presented.The flexible body's aviation gesture and rocket's parameters in ballistic can be get from the calculation.