局部外形参数对高速飞行器的RCS影响

doi:10.12305/j.issn.1001-506X.2024.11.11

系统工程与电子技术 ›› 2024, Vol. 46 ›› Issue (11): 3690-3702.doi: 10.12305/j.issn.1001-506X.2024.11.11

局部外形参数对高速飞行器的RCS影响

刘俊¹, 任杰¹, 赤丰华²^,*, 罗世彬¹, 郑盛贤¹, 宋佳文¹

1. 中南大学航空航天技术研究院, 湖南长沙 410083
2. 中国运载火箭技术研究院空间物理重点实验室, 北京 100076

收稿日期:2024-01-19 出版日期:2024-10-28 发布日期:2024-11-30
通讯作者: 赤丰华
作者简介:刘俊 (1986—), 男, 副教授, 博士, 主要研究方向为空天飞行器气动布局设计、飞行器气动优化设计
任杰 (1999—), 男, 硕士研究生, 主要研究方向为空天飞行器气动与隐身设计
赤丰华 (1993—), 男, 工程师, 硕士, 主要研究方向为新概念飞行器总体设计
罗世彬 (1976—), 男, 教授, 博士, 主要研究方向为空天飞行器设计、宽速域组合动力
郑盛贤 (1999—), 男, 博士研究生, 主要研究方向为空天飞行器设计
宋佳文 (1990—), 男, 副研究员, 博士, 主要研究方向为空天飞行器热结构、热防护设计
基金资助:
湖南省重点研发计划(2021GK2011);湖南省重点研发计划(2023GK2022);高校联合创新基金(CALT2022-08)

Effect of local shape parameters on RCS of high-speed vehicle

Jun LIU¹, Jie REN¹, Fenghua CHI²^,*, Shibin LUO¹, Shengxian ZHENG¹, Jiawen SONG¹

1. Research Institute of Aerospace Technology, Central South University, Changsha 410083, China
2. Science and Technology on Space Physics Laboratory, China Academy of Launch Vehicle Technology, Beijing 100076, China

Received:2024-01-19 Online:2024-10-28 Published:2024-11-30
Contact: Fenghua CHI

摘要/Abstract

摘要：

为了降低高速飞行器的雷达散射截面(radar cross section, RCS), 采用多层快速多极子算法和物理光学法研究局部外形参数对飞行器雷达散射特性的影响。在此基础上, 提出一种变半径弧形的边缘钝化形式, 以提高飞行器仰视对抗能力。所提出的变半径弧形钝化外形具有良好的RCS减缩能力, 与传统圆弧钝化外形相比, 在前向重点角域内, RCS对数均值降低了22.88%;随着仰角的增大, 变半径弧形钝化形式还具备全向RCS减缩能力, 在全向角域内RCS对数均值降低了13.37%。最后, 研究所提出的变半径弧形钝化方式在不同雷达波频段下的RCS特性, 结果表明这种钝化方式对于频率较高时仰视对抗能力更好。

关键词: 高速飞行器, 机身型线, 钝化半径, 钝化形式, 雷达散射截面, 变半径弧形钝化

Abstract:

In order to reduce the radar cross section (RCS) of a high-speed vehicle, the effects of local shape parameters on the radar scattering characteristics of the vehicle are investigated by using the multilayer fast multipole method and physical optics method. On this basis, the blunt leading edges of the variable-radius-arc shape are proposed to improve the ability of the vehicle's ability to face up and engage in adversarial maneuvers. The proposed variable-radius-arc blunting shape has good RCS reduction capability. Compared to the traditional arc blunting, the log-mean of RCS in the forward key angle area is reduced by 22.88%. With the increase of elevation angle, the variable-radius-arc blunting shape also has omnidirectional RCS reduction ability. And log-mean RCS in the omnidirectional angular domain is reduced by 13.37%. Finally, the RCS characteristics of the proposed variable-radius-arc blunting method are studied under different radar wave frequency bands, and the results show that this blunting method has better ability to face up and engage in adversarial maneuvers at higher frequencies.

Key words: high-speed vehicle, fuselage profile line, blunting radius, blunting shape, radar cross section (RCS), variable-radius-arc blunting

中图分类号:

刘俊, 任杰, 赤丰华, 罗世彬, 郑盛贤, 宋佳文. 局部外形参数对高速飞行器的RCS影响[J]. 系统工程与电子技术, 2024, 46(11): 3690-3702.

Jun LIU, Jie REN, Fenghua CHI, Shibin LUO, Shengxian ZHENG, Jiawen SONG. Effect of local shape parameters on RCS of high-speed vehicle[J]. Systems Engineering and Electronics, 2024, 46(11): 3690-3702.

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方向角域	实测^[36]	RECOTA^[36]	PO法	MLFMM
前向	-25.02	-23.80	-23.99	-23.46
侧向	-14.44	-11.69	-11.14	-10.31
后向	-21.80	-22.38	-24.43	-23.94

曲线指数	RCS对数均值	0°方向角RCS	侧向方向角波峰RCS
0.60	-14.46	-16.42	25.35
0.65	-15.76	-15.51	22.64
0.70	-16.67	-13.01	26.71
0.75	-17.35	-14.12	24.81

线形	平均RCS
线形	0~60°	70~90°	0~120°
锥型	-25.47	-6.04	-20.11
圆弧型	-27.75	12.88	-16.98
抛物线型	-27.91	12.34	-17.22
冯卡门型	-27.01	12.14	-15.82
指数0.75	-27.04	2.66	-19.08

仰角	R10	R15	R20	R25	R30
0°	-24.25	-22.74	-21.69	-20.43	-19.38
10°	-24.31	-22.92	-21.80	-20.21	-19.32
20°	-23.63	-22.50	-21.85	-19.66	-18.86
30°	-23.65	-22.79	-20.53	-18.82	-17.98

仰角	R10	R15	R20	R25	R30
0°	-29.13	-27.41	-26.94	-25.77	-24.73
10°	-27.45	-25.88	-25.60	-24.91	-23.89
20°	-26.70	-24.77	-23.63	-23.69	-23.26
30°	-24.93	-24.00	-22.64	-22.52	-21.42

局部外形参数对高速飞行器的RCS影响

Effect of local shape parameters on RCS of high-speed vehicle

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仰角	R10	R15	R20	R25	R30
0°	-36.23	-32.60	-30.16	-29.42	-27.83
10°	-32.83	-30.16	-28.72	-29.65	-29.81
20°	-33.63	-31.40	-30.59	-30.32	-29.67
30°	-31.35	-30.58	-30.12	-29.83	-29.78

角域范围	R30→R25	R25→R20	R20→R15	R15→R10	总减缩量
前向扇区	0.90	1.69	1.27	1.22	5.08
侧向扇区	0.90	0.48	0.81	1.54	3.73
后向扇区	0.53	0.09	1.29	2.33	4.82

仰角/(°)	前向对数RCS均值			全向对数RCS均值
仰角/(°)	圆弧	变半径弧形	减缩量	圆弧	变半径弧形	减缩量
0	-26.14	-29.00	2.86	-26.80	-26.96	0.16
5	-26.03	-29.86	3.83	-26.76	-28.15	1.39
10	-26.01	-31.02	5.01	-26.63	-29.21	2.58
15	-25.98	-31.38	5.40	-27.11	-30.58	3.47
20	-25.95	-32.01	6.06	-27.11	-30.78	3.67
25	-25.81	-32.61	6.80	-27.22	-32.00	4.78
30	-25.43	-33.07	7.64	-27.63	-33.15	5.52
35	-25.46	-33.20	7.74	-27.23	-32.81	5.58
40	-25.63	-33.48	7.85	-27.22	-32.68	5.46
平均	-25.83	-31.74	5.91	-27.08	-30.70	3.62

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