1. 中国空气动力研究与发展中心 计算空气动力研究所,绵阳,621000
2. 空天飞行空气动力科学与技术全国重点实验室,绵阳,621000
3. 南京航空航天大学 航空学院,南京,210016
4. 上海机电工程研究所,上海,201100
孔轶男(1979—),山东淄博人,副研究员,研究方向:飞行动力学,气动建模,参数辨识. E-mail: fxlx2013@163.com
汪 清*(1966—),安徽芜湖人,研究员,研究方向:飞行动力学,气动建模,参数辨识. E-mail: wangqing_mail@163.com
纸质出版:2024
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孔轶男, 伍彬, 汪清, 等. 过失速重新定向机动过程气动特性建模[J]. 空气动力学学报, 2024, 42(5): 72−80.
KONG Yinan, WU Bin, WANG Qing, et al. Aerodynamic characteristics modeling of post-stall re-orientation maneuver[J]. 2024, 42(5): 72-80.
孔轶男, 伍彬, 汪清, 等. 过失速重新定向机动过程气动特性建模[J]. 空气动力学学报, 2024, 42(5): 72−80. DOI: 10.7638/kqdlxxb-2023.0049
KONG Yinan, WU Bin, WANG Qing, et al. Aerodynamic characteristics modeling of post-stall re-orientation maneuver[J]. 2024, 42(5): 72-80. DOI: 10.7638/kqdlxxb-2023.0049.
以过失速重新定向技术为基础的自翻转越肩飞行器与传统越肩发射飞行器相比,具有响应时间短、机动性能高、射程远等优势。本文针对飞行器过失速重新定向机动过程,基于CFD动态计算数据分析了该过程中的飞行器气动特性,通过改进微分方程模型成功描述了机动过程中的迟滞环效应,同时验证了最小二乘支持向量机方法在此建模问题中的适用性。本文的建模方法可以准确捕捉飞行器过失速重新定向机动过程中的非线性非定常气动特性,为飞行器过失速重新定向机动控制律设计提供模型基础。
Compared to traditional over-shoulder-launched aircrafts
aircrafts based on the post-stall re-orientation technique have operational advantages
such as short response time
high manoeuvrability
and long range. Therefore
it is an advantageous option for the new generation of air-launched aircrafts to achieve omnidirectional attack. Focusing on the manoeuvre course of the post-stall re-orientation slender body
CFD simulations were performed to analyze the aerodynamic characteristics in this study. By improving the differential equation method
the hysteresis characteristics that exist in the post-stall re-orientation process can be successfully predicted. At the same time
the applicability of the least square support vector machine(LS-SVM) method in modeling such a problem has been verified. The present method can capture the non-linear unsteady aerodynamic characteristics in the re-orientation process
which provides a foundation in the control law design for post-stall re-orientation slender body.
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