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本文应用随机微分方程理论分析了随机起始扰动作用下不旋转尾翼弹之攻角沿全弹道变化的统计规律性.得到了随机变化的攻角δ的均值m_δ,方差oδ~2及攻角δ的概率密度函数f(δ,s)和分布函数F(δ,s),文中还分析了起始扰动的随机性对攻角δ的影响.指出了目前外弹道学中有关结论的合理性,并给出了判断攻角δ沿全弹道变化大小的一个判据(g),为更深刻地了解攻角δ沿全弹道的变化提供了理论依据.
In this paper, the stochastic differential equation theory is used to analyze the statistical regularity of the attack angles of the non-revolving tail flaps along the whole ballistic trajectory under the random initial perturbation. The random mean δ_δ, the variance δδ and the angle of attack δ The probability density function f (δ, s) and the distribution function F (δ, s) are also analyzed.The influence of the randomness of initial perturbation on the angle of attack δ is also analyzed.The rationality of the relevant conclusions in the current external ballistics is pointed out, A criterion (g) for judging the change of attack angle δ along the whole ballistic trajectory is given, which provides a theoretical basis for a deeper understanding of the change of attack angle δ along the whole trajectory.