This paper uses the variational method to calculate the configurations of projectile nose with the minimum drag under the conditions that the sum of nose wave resistance and frictional resistance satisfies the extremes (Euler equation).

• 本文通过变分法,在同时考虑弹体头部波阻、摩擦阻力二音之和满足其极值条件(欧拉方程)时,得到了最小阻力的头部外形。