摘要:为提高普通炮弹的射击精度，提出了一种通过控制阻力片展开面积来改变增阻效果的一维弹道修正弹机构。分析了不同展开面积下阻力系数随攻角和风速的变化关系。建立了扩增阻力系数与阻力片展开面积之间的数学模型，推导出执行多次修正时扩增空气阻力系数的表达式。以某弹为应用背景，通过数值分析和仿真实验研究了利用阻力片展开不同面积，实现多次修正对飞行距离的影响。

To improve the precision of the projectile fired，one-dimension trajectory correction devices depending on controlling the damper to open variable areas to change damp-increasing affection was proposed，and changes of drag coefficient accompanied by angle-of-attack and wind speed under different open areas were analyzed． Mathematical model was built between increased drag coefficients and variable areas opened by the damper． Furthermore，mathematical expressions of increased drag coefficient in repeated remediation were also deduced． Tak ing a certain type of projectiles as an application background，influences of flying distance caused by opening variable area and realizing mul tiple range corrections were researched with the theory of numerical analysis and simulation experiments．