高原环境对高炮外弹道特性的影响

对平原和高原环境下弹丸飞行稳定性的差异进行了分析,提出了高原条件下弹丸陀螺稳定性和动态稳定性的判别式,得到稳定性随空气密度的减小而增强.根据高原一年四季中气压、气温、湿度和风的变化规律,通过弹道计算分析了高原弹道与平原弹道的差异,得出高原气温和气压对弹道的影响较大,研究了高原和平原弹丸阻力系数的差异及其对高炮弹道的影响程度,提出了提高高原射表精度的必要性.

Effects of Plateau Environment on the Ballistics of Anti-aircraft Guns

The difference of the flight stability of projectiles under the conditions of plain and plateau was discussed, and the formulae for the gyro stability and dynamic stability of projectiles over the plateau were presented. The stability is improved following the decrease of the air density. According to the conditions of the atmospheric pressure, temperature , humidity and wind over the plateau at all seasons, the difference of the trajectory of a projectile over the plain and the plateau was analyzed by the trajectory calculation. The effects of the atmospheric temperature and the atomospheric pressure on the ballistics are significant. The difference of the drag coefficient of a projectile flighting over the plain and the plateau and its effects on the projectile trajectory of an anti-aircraft gun were studied. The necessary for improving the accuracy of the firing tables for anti-aircraft guns was suggested.