首页> 外文期刊>Journal of the Aeronautical Society of India >ESTIMATION OF DRAG COEFFICIENT FROM RADAR TRACKED TRAJECTORY DATA OF AN ARTILLERY SHELL
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ESTIMATION OF DRAG COEFFICIENT FROM RADAR TRACKED TRAJECTORY DATA OF AN ARTILLERY SHELL

机译:从炮弹的雷达跟踪轨迹数据估算拖曳系数

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摘要

An attempt is made to estimate aerodynamic parameters using radar tracked coordinates of a free flight artillery shell. The present paper proposes schemes using maximum likelihood method to estimate average values of drag coefficient and its functional dependence on Mach number by processing trajectory data of an artillery shell. The proposed schemes were validated by applying these on simulated trajectory data of a routinely used artillery shell. Based on the results obtained, it can be concluded that both schemes could advantageously be used to estimate drag coefficient using radar tracked trajectory data of an artillery shell.
机译:尝试使用雷达跟踪的自由飞行炮弹的坐标来估计空气动力学参数。本文提出了一种利用最大似然法通过处理炮弹弹道数据来估计阻力系数平均值及其对马赫数的函数依赖性的方案。通过将这些方案应用到常规使用的炮弹的模拟轨迹数据上,对所提出的方案进行了验证。基于获得的结果,可以得出结论,两种方案都可以有利地用于使用雷达跟踪的炮弹轨迹数据估算阻力系数。

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