文中引入附加质量、附加表面积的概念 ,提出基于细长体理论的非圆截面 (矩形、正方形、三角形等 )弹体法向气动力工程估算方法 ,并对此方法进行了验证。计算结果和风洞试验值比较 ,法向力系数计算误差在 1 0 %以内 ,说明本方法可以在工程初步估算时应用。 In this paper, the concept of additional mass and additional surface area is introduced, and a method of aerodynamic engineering estimation of non-circular cross-section (rectangular, square, triangular, etc.) projectiles based on the slender body theory is proposed. Compared with wind tunnel test results, the calculation error of normal force coefficient is less than 10%, which shows that this method can be applied in the preliminary estimation of engineering.