轴对称及二元喷管RCS的数值模拟

杨涛; 杨青真; 李岳锋

轴对称及二元喷管RCS的数值模拟

西北工业大学动力与能源学院,西安 710072

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出版历程
- 收稿日期: 2010-09-15
- 修回日期: 2011-01-04
- 刊出日期: 2011-08-28

Numerical simulation of RCS for axisymmetric nozzles and symmetrical two-dimensional nozzle

School of Power and Energy, Northwestern Polytechnical University,Xi'an 710072,China

摘要

摘要: 利用物理光学迭代法独立设计程序,采用前后向算法并结合欠松弛因子加速收敛,提高运算效率.通过计算简单标准模型的雷达散射截面(RCS)验证了程序的可靠性.在此基础上,对两种不同宽高比二元喷管简化模型及轴对称喷管简化模型的RCS进行了计算并加以分析比较.结果表明,程序具有较好的计算精度和通用性,在较大范围的姿态角内,二元喷管简化模型的RCS高于轴对称喷管简化模型的RCS.
- 物理光学迭代法 /
- 雷达散射截面 /
- 二元喷管 /
- 轴对称喷管 /
- 欠松弛因子
Abstract: The iterative physical optic method was used for the programming code to calculate radar cross section (RCS),while the forward-backward algorithm combined with relaxation factor was used to accelerate the convergence and improve operation efficiency.Some sample standard models were calculated to validate the reliability of the code;based on this,the RCS of two-dimensional(2-D) nozzles with different aspect ratios and an axisymmetric nozzle was computed and compared.According to the numerical results,this procedure has high accuracy and versatility,and the RCS of the 2-D nozzle is higher than that of the axisymmetric nozzle in the large angular range.
- iterative physical optic (IPO) approach /
- radar cross section(RCS) /
- two-dimensional nozzle /
- axisymmetric nozzle /
- under-relaxation factors

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参考文献(12)

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