基于弹道精确测量的射表编拟方法研究

射表试验弹药消耗大、试验周期长是长期存在的问题。针对此问题,根据刚体弹道理论,建立了弹箭六自由度弹道微分方程。开展了飞行诸元关于各气动参数的灵敏度分析,通过仿真计算,对弹箭气动参数准确辨识方法和全弹道符合计算方法进行了研究,初步形成了基于弹道精确测量的射表编拟新方法。仿真结果表明,新方法能够较准确辨识出弹箭气动参数,计算弹道与实际弹道一致性更好,更能反映弹箭的真实飞行状态。研究成果为改变射表试验消耗大、周期长的问题,进一步提高射表精度和射表编拟技术奠定了理论基础。

Method of Firing-table Compilation Based on Precise Ballistic Measurement

It is a long-term problem to consume a lot of ammunition and test cycle in firing table test. According to the theory of rigid body trajectory,a six-degree-of-freedom trajectory differential-equation for projectiles and rockets was established,and the sensitivity analysis of flight data on each aerodynamic parameter was carried out. By simulation calculation,the accurate identification method of aerodynamic parameters and the calculation method of full trajectory coincidence were studied,and a new method of compiling firing table based on precise ballistic measurement was preliminarily formed. The results show that the new method can accurately identify the aerodynamic parameters of the projectile,and the calculated trajectory is more consistent with the actual trajectory,which can better reflect the real flight state of the projectile. The research results lay a theoretical foundation for changing the problems of large test consumption and long test period,and further improving the accuracy and compling technology of the firing table.