摘要
为研究线膛炮试验跳角在起始扰动作用下随靶距的变化规律,分析了起始攻角角速度引起的偏角变化对试验结果的影响,并结合6自由度外弹道方程和跳角计算公式,建立了平射跳角仿真模型。针对某155 mm火炮,利用所建立的平射跳角模型,对定起始跳角条件下,起始扰动引起的跳角随靶距变化进行了数值仿真。仿真结果表明:起始攻角角速度是造成跳角测试值随靶距变化的主要原因;在某一给定靶距下,跳角散布大小与起始攻角角速度散布大小近似具有线性关系;在靶距较小时,可以只考虑升力和静力矩改变对跳角测试结果的影响。
In order to study the effect of initial disturbance on the variation of projectile jump with target distance,the influence of the deflection angle change caused by the initial angular velocity of the angle of attack on the test results was analyzed,and the simulation model of projectile jump under flat fire condition which is based on 6-degree-of-freedom external ballistic equation and the projectile jump formula was established.Aiming at a 155 mm artillery,using the established flat jump angle model,under the condition of fixed initial jump angle,the numerical simulation of the change of the jump angle with the target distance caused by the initial disturbance was carried out.The following conclusions were obtained from the simulation results:The initial angular velocity of the angle of attack is the main reason for the dispersion of the test value of the projectile jump with the target distance;At a given target distance,the spread of the jump angle has a linear relationship with the spread of the initial angular velocity of the angle of attack;When the target distance is small,only the influence of lift and static moment changes on the jump angle test results should be considered.
作者
邹玉华
张领科
王海峰
ZOU Yuhua;ZHANG Lingke;WANG Haifeng(College of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;The No.62850th Troop of PLA,Baicheng 137001,China)
出处
《兵器装备工程学报》
CAS
北大核心
2020年第6期46-52,共7页
Journal of Ordnance Equipment Engineering
关键词
跳角
弹道
平均偏角
蒙特卡洛方法
数值计算
projectile jump
ballistic
aerodynamic jump
Monte Carlo method
numeral calculations
