CAJ | 학술논문

弹丸的结构特征数直接影响弹丸外弹道飞行运动，而结构特征数极限值影响引信在外弹道的极限力学环境。针对工程中难以得到弹丸结构特征数极限值，提出利用榴弹结构特征数实测数据拟合其数学分布并进一步研究其分布特性的方法。155 mm 榴弹结构特征数中，质量和质心轴向位置同时服从正态分布和Weibull 分布，赤道转动惯量服从 Weibull 分布；为改善射击密集度对弹体部分尺寸公差加严后，极转动惯量同时服从正态分布和 Weibull 分布，质量服从 Weibull 分布。尺寸公差加严后除质心位置外的其余结构特征数散布均变小。偏心距极小值为零，极大值为0.35 mm。
탄환적결구특정수직접영향탄환외탄도비행운동，이결구특정수겁한치영향인신재외탄도적겁한역학배경。침대공정중난이득도탄환결구특정수겁한치，제출이용류탄결구특정수실측수거의합기수학분포병진일보연구기분포특성적방법。155 mm 류탄결구특정수중，질량화질심축향위치동시복종정태분포화Weibull 분포，적도전동관량복종 Weibull 분포；위개선사격밀집도대탄체부분척촌공차가엄후，겁전동관량동시복종정태분포화 Weibull 분포，질량복종 Weibull 분포。척촌공차가엄후제질심위치외적기여결구특정수산포균변소。편심거겁소치위령，겁대치위0.35 mm。
The external ballistics was influenced by the projectile structural characteristics parameters,and the limit ballistic environment can’t be calculated accurately.A method of fitting and researching mathematical dis-tribution of projectile’s structural characteristics parameters according to the measured data was proposed in this paper.A 1 55 mm caliber projectile’s axial centric position and mass obeyed normal distribution and Weibull dis-tribution,moment of inertia of the equator obeyed Weibull distribution.To improve shot-intensive,part of the dimensional tolerances on projectile were tightened,then the projectile’s polar moment of inertia obeyed normal distribution and weibull distribution,mass obeys weibull distribution.