| 一种直升机进气道电磁散射减缩方案实验研究 |
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| 引用本文： | 韩东,郭荣伟,易海云,周蓓蓓.一种直升机进气道电磁散射减缩方案实验研究[J].航空动力学报,2004,19(2):229-232. |
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| 作者姓名： | 韩东 郭荣伟 易海云 周蓓蓓 |
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| 作者单位： | 南京航空航天大学,能源与动力学院,江苏,南京,210016 |
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| 摘 要： | 对一种与发动机舱融合设计的直升机进气道在垂直极化方式、水平极化方式下进行了电磁散射特性减缩方案研究。通过对比不同减缩方案与全金属模型RCS性能参数,研究了各种减缩方案的减缩效果,结果表明,该类进气道在采用电磁散射减缩方案时,RCS较全金属模型而言,均有不同程度的降低,其中采用在前唇口、上下唇口、前输出轴、动力舱粘贴吸波材料缩减方案的减缩效果是最佳的,可以获得8dB左右的RCS减缩效果。另外,垂直极化方式下采用减缩方案的减缩效果要比水平极化方式效果好。
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| 关 键 词： | 航空、航天推进系统 直升机进气道 雷达散射截面 隐身技术 |
| 文章编号： | 1000-8055(2004)02-0229-04 |
| 收稿时间： | 2003/5/27 0:00:00 |
| 修稿时间： | 2003年5月27日 |
Experimental Study of RCS Reduction for a Helicopter Inlet |
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| HAN Dong,GUO Rong-wei,YI Hai-yun and ZHOU Bei-bei.Experimental Study of RCS Reduction for a Helicopter Inlet[J].Journal of Aerospace Power,2004,19(2):229-232. |
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| Authors: | HAN Dong GUO Rong-wei YI Hai-yun and ZHOU Bei-bei |
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| Institution: | Nanjing University of Aeronautics and Astronautics,Nanjing210016,China;Nanjing University of Aeronautics and Astronautics,Nanjing210016,China;Nanjing University of Aeronautics and Astronautics,Nanjing210016,China;Nanjing University of Aeronautics and Astronautics,Nanjing210016,China |
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| Abstract: | An experimental study of RCS reduction for a helicopter inlet syncretized with engine cabin was completed in vertical and horizontal polarization ways.Meanwhile,the RCS reduction effects were analyzed for various reduction schemes by comparing with RCS of pure metal model.The results show that RCS of this inlet is lower than that of the pure metal model.Sticking radar absorbing materials on front lip,upper lip,inferior lip,output shaft,and engine cabin has best RCS reduction effect.This method can achieve about 8 dB of RCS reduction.Besides,the effect of RCS reduction in vertical polarization way is better than that of in horizontal polarization way. |
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| Keywords: | aerospace propulsion system helicopter inlet radar cross section stealth technique |
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