| 非圆截面弹体附加表面积工程估算方法研究 |
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| 引用本文： | 徐春光,刘君,李晓斌.非圆截面弹体附加表面积工程估算方法研究[J].航空计算技术,2001,31(3):7-11. |
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| 作者姓名： | 徐春光 刘君 李晓斌 |
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| 作者单位： | 国防科技大学航天与材料工程学院,湖南长沙,410073 |
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| 摘 要： | 引入附加质量、附加表面积的概念 ,给出基于细长体理论的非圆截面弹体附加表面积的工程估算方法 ,并提出了计算带倒角圆的正方形和不同顶角菱形附加表面积的通用公式 ,通过计算值与理论值的比较 ,误差在 2 %以内。并通过利用附加表面积计算的弹体法向力系数与试验值进行比较 ,法向力系数计算误差在 10 %以内 ,说明用本方法计算的附加表面积可以在工程初步估算时应用。
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| 关 键 词： | 非圆截面 附加表面积 法向力 |
| 修稿时间： | 2001年7月1日 |
Method Study of the Additional Apparent Area Calculation of Missile with Non-Circular Shape Cross Sections |
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| XU Chun-guang,LIU Jun,LI Xiao-bin.Method Study of the Additional Apparent Area Calculation of Missile with Non-Circular Shape Cross Sections[J].Aeronautical Computer Technique,2001,31(3):7-11. |
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| Authors: | XU Chun-guang LIU Jun LI Xiao-bin |
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| Abstract: | In this paper ,the concept of added mass and additional apparent area are applied, the method of additional apparent area calculation based on slender body theory of missile with non-circular shape cross sections is presented and a unified formula of square cross section with corner radius is given. At last the result of normal force coefficient calculated by additional apparent area is compared with the wind tunnel experimental data, and the calculated error of normal force coefficient are less than 10%.The method calculating additional apparent area is suitable for engineering preliminary calculation. |
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| Keywords: | non-circular shape cross section normal force additional apparent area |
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