基于射击试验的弹丸高原气动特性研究

Study on Aerodynamic Characteristics of Projectile in Plateau Based on Shooting Test

分析了高原靶场试验数据,利用C-K法辨识获取了弹丸那在不同海拔高度下的阻力系数、升力系数、静力矩系数等各气动系数(导数)变化规律,其与平原地区风洞试验数据(气动参数)差异恰恰是高原与平原地区的不同。在高原地区进行火炮射击决定射击诸元时必须考虑气动参数。

The test data of high altitude shooting range,its characteristics were analyzed.The variation laws of aerodynamic coefficients(derivatives)such as drag coefficient,lift coefficient and static moment coefficient of projectile at different altitudes were identified and obtained by C-K method.The difference between them and the wind tunnel test data(aerodynamic parameters)in plain area is exactly the difference between Plateau and plain area.This aerodynamic parameter must be taken into account when determining the firing parameters for artillery fire in Plateau area.