【摘要】 准确评估弹丸炮口扰动对自行火炮射击精度的影响，可以帮助提高自行火炮射击精度。为获得较准确的自行火炮射击数据，建立了6自由度刚体外弹道模型。根据弹丸炮口扰动的分布情况，提出了一种全局灵敏度分析敏感系数估计方法。基于上述模型和方法，进行了某自行火炮的弹丸炮口扰动全局灵敏度分析。结果显示：弹轴炮口速度是影响某自行火炮最大射程条件下射击精度的主要因素之一。更多还原

【Abstract】 Accurately assessing the influence of projectile muzzle disturbances on the firing accuracy of self-propelled guns is crucial for improving the firing accuracy of self-propelled guns. To this end,a six-degree-of-freedom(6-DOF) rigid-body exterior ballistic model is established. Furthermore,a global sensitivity analysis method for estimating sensitivity coefficients is proposed,accounting for the distribution characteristics of the muzzle disturbances. Based on the proposed model and method,a global sensitivity analysis is performed to evaluate the effects of various muzzle disturbance parameters on the firing accuracy of a specific self-propelled gun. Results show that the muzzle velocity of the projectile centroid is among the most influential factors affecting firing accuracy at maximum range.更多还原