CAJ | 학술논문

为研究布撒集束筒中无伞无翼子弹药的空气动力学特性和标定影响集束筒中4枚子弹药轴向抛撒落点散布的各个要素，应用系统动力学和计算流体力学等方法对非轴对称子弹药弹体外形在低马赫数、高粘性下进行气动仿真，分析了其外在流场，获取了气动参数；编写了弹道程序，分析并标定了抛撒过程中影响集束筒中4枚子弹药落点散布的要素，总结出了相关要素影响落点散布的规律。结果表明：抛撒高度、牵连速度、集束筒轴线与水平面夹角、抛撒速度对子弹药落点间距影响较大；抛撒高度、子弹药牵连速度对子弹药落点间距散布均匀性影响较大；集束筒轴线与水平面夹角对子弹落点区域中心位置影响较大。
위연구포살집속통중무산무익자탄약적공기동역학특성화표정영향집속통중4매자탄약축향포살낙점산포적각개요소，응용계통동역학화계산류체역학등방법대비축대칭자탄약탄체외형재저마혁수、고점성하진행기동방진，분석료기외재류장，획취료기동삼수；편사료탄도정서，분석병표정료포살과정중영향집속통중4매자탄약낙점산포적요소，총결출료상관요소영향낙점산포적규률。결과표명：포살고도、견련속도、집속통축선여수평면협각、포살속도대자탄약낙점간거영향교대；포살고도、자탄약견련속도대자탄약낙점간거산포균균성영향교대；집속통축선여수평면협각대자탄낙점구역중심위치영향교대。
To study the aerodynamic characteristics and demarcate the influence factors on the ballistic fall points distribution of terminal sensitive proj ectile(TSP)without parachute or wing, the system dynamics and computational fluid dynamics were applied to simulate the TSP under low Mach number and high viscosity hypothesis.The flow field of TSP without parachute or wing was simulated separately.The ballistic program was edited,and the factors influencing fall-points distribution of four proj ectils in cluster barrel in the dispersion process were analyzed and demarcated.The factors influencing the ballistic fall points distribution of the parachute-bomb were studied,and the results were contrasted.The important factors influencing the space between of the points of fall are the height of throwing,embroil velocity,the angle between axes and level and throwing velocity.The important factors influencing the uniformity of the points of fall are throwing height and embroil velocity.The important factor influencing the center of the points of fall is the angle between axes and level.