关键词: 人影作业, 安全射界图, 海拔高度, 弹道计算

Abstract:

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.

Key words: weather modification operation, safe firing area map, altitude, external trajectory calculation