基于海拔高度的人影作业安全射界图订正

Revisal on Safe Firing Area Map of Weather Modification Operation Based on Altitude

针对37 mm人影作业高炮炮弹推导质点外弹道的计算方法,模拟0 m海拔标准气象条件下的弹道诸元。结果发现:高海拔地区空气密度有所降低,弹丸飞行时的阻力加速度减小,射程相对较远,因此高海拔地区在绘制高炮安全射界图时,必须考虑海拔高度因素的订正;基于直接计算和弹道相似原理计算2种方法的未爆弹丸最大射程修正值差异较小,2种方法均可准确计算高海拔地区炮弹落点,对高海拔地区的弹道轨迹修正更为精确,从而可以提高安全射界图的精细化程度。

The calculation method of particle external trajectory of 37 mm anti-aircraft gun was deduced,and the method was widely used to simulate the ballistic parameters data under the standard atmospheric conditions at sea level in the field of weather modification.The results show that the air was thinner over high altitude area,so the flying resistance of shell in the air reduced,and then the projectile had a longer range.Therefore,the revisal of elevation must be considered when drawing safe firing area map at weather modification sites.The difference of the maximum firing range correction between the direct calculation method and ballistic similarity theory calculation method was smaller.Both of two methods were able to accurately calculate the projectile landing point in high altitude area and improve precision of safe firing area map.