| 一种从自由飞行实验中提取空气动力系数的新方法 |
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| 引用本文： | 李迎九 曾仕伦. 一种从自由飞行实验中提取空气动力系数的新方法[J]. 南京理工大学学报(自然科学版), 1997, 21(4): 321-324 |
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| 作者姓名： | 李迎九 曾仕伦 |
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| 作者单位： | 南京理工大学动力工程学院 |
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| 摘 要： | 该文提出从飞行体自由飞行试验中提取空气动力系数的新方法－－Ｍａｒｑｕａｒｄｔ改进法。Ｍａｒｑｕａｒｄｔ法综合了Ｃｈａｐｍａｎｎ－Ｋｉｒｋ渚最速下降法的优点而避开了它们的缺点，是一种比较好的数据处理方法。Ｍａｎｑｕａｒｄｔ改进法既继承了Ｍａｒｑｕａｒｄｔ法的优点，又大大地减少了计算工作量，是一种收敛快的迭代算法，最后，给出了在靶道实验数据处理中的计算实例。
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| 关 键 词： | 空气动力系数 飞行体 自由飞行试验 外弹道学 |
A New Algorithm for Extracting Aerodynamic Coefficients from Free flight Data |
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| Li Yingjiu Zeng Shilun Yi Wenjun. A New Algorithm for Extracting Aerodynamic Coefficients from Free flight Data[J]. Journal of Nanjing University of Science and Technology(Nature Science), 1997, 21(4): 321-324 |
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| Authors: | Li Yingjiu Zeng Shilun Yi Wenjun |
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| Abstract: | This paper proposes a new algorithm for extracting aerodynamic coefficients from free flight data:improved Marquardt algorithm. Marquardt algorithm is a rather good data reduction algorithm. It combines the advantages of Chapmann Kirk algorithm and the steepest descent algorithm, and avoids their defects. The improved Marquardt algorithm not only inherits the advantages of Marquardt algorithm, but also much more decreases the computation time .It is a quicker convergence interation algorithm than Marquardt algorithm. The application of this improved algorithm to data reduction in aeroballistic range is presented. |
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| Keywords: | aerodynamic coefficients data reduction interation algorithm |
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