结冰条件下飞机气动/运动耦合特性

doi:10.7527/S1000-6893.2021.25566

流体力学与飞行力学

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结冰条件下飞机气动/运动耦合特性

伍强¹, 徐浩军¹, 魏扬², 裴彬彬^1,3, 薛源¹

1. 空军工程大学航空工程学院, 西安 710038;
2. 中国人民解放军 94639部队, 南京 211500;
3. 西安电子科技大学电子工程学院, 西安 710071

收稿日期:2021-03-24 修回日期:2021-05-28 出版日期:2022-08-15 发布日期:2021-05-26
通讯作者: 魏扬,E-mail:15339171636@163.com E-mail:15339171636@163.com
基金资助:
国家重点基础研究发展计划(2015CB755802)

Aerodynamics/flight dynamics coupling characteristics of aircraft under icing conditions

WU Qiang¹, XU Haojun¹, WEI Yang², PEI Binbin^1,3, XUE Yuan¹

1. Aeronautics Engineering College, Air Force Engineering University, Xi'an 710038, China;
2. Unit 94639, Chinese People's Liberation Army, Nanjing 211500, China;
3. School of Electronic Engineering, Xidian University, Xi'an 710011, China

Received:2021-03-24 Revised:2021-05-28 Online:2022-08-15 Published:2021-05-26
Supported by:
National Basic Research Program of China (2015CB755802)

摘要/Abstract

摘要： 结冰会破坏飞机原有的气动外形,结冰后的流动表现出强烈的非定常、非线性和随机性。针对背景飞机结冰条件下气动/运动的耦合特性进行分析,提出了双向面耦合的求解策略,开发了高精度非定常流场求解器与飞行仿真软件双向耦合的一体化仿真平台,并通过标准算例验证了耦合算法的有效性,且数值模拟程序具备模拟动姿态非定常流动的能力。在此基础上对机翼前缘结冰条件下背景飞机的气动/运动耦合特性进行了计算分析。结果表明:结冰条件下非定常效应的影响在中等迎角阶段较为显著,此时分离泡脱落与再附带来的非定常特征将使气动力出现较强的脉动现象,易导致飞机失稳。文中所述方法,为探索不可控运动与流场及气动特性相互耦合特征对飞行安全的影响奠定基础,具有较好的工程应用前景。

关键词: 结冰条件, 耦合特性, 非定常流场, 气动特性, 飞机

Abstract: Icing will destroy the original aerodynamic shape of the aircraft, and the flow field on the aircraft surface shows strong unsteady, nonlinear and random characteristics under icing conditions. We analyze the coupling characteristics of aerodynamics / flight dynamics of background aircraft under icing conditions, proposing a two-way coupling solution strategy, and developing an integrated numerical computing platform for the unsteady flow solver and flight dynamics simulation software. The effectiveness of the coupling algorithm is verified through standard examples, and the numerical simulation program is capable of simulation of unsteady flow with dynamic attitude. On this basis, the calculation and analysis of the coupling characteristics of background aircraft aerodynamics/flight dynamics with the ice accretion on the leading edge of the wing are conducted. The results show that the influence of the unsteady effect under icing conditions is reflected in the high angle of attack stage. Meanwhile, the unsteady characteristics brought by separation bubble shedding and re-incidence will cause strong pulsation of aerodynamic forces, possibly leading to aircraft loss of control. The method described in this paper lays a foundation for exploring the influence of the coupling characteristics of uncontrollable motion, flow field and aerodynamic characteristics on flight safety, exhibiting a good engineering application prospect.

Key words: icing conditions, coupling characteristics, unsteady flow field, aerodynamic characteristics, aircraft

中图分类号:

V212

伍强, 徐浩军, 魏扬, 裴彬彬, 薛源. 结冰条件下飞机气动/运动耦合特性[J]. 航空学报, 2022, 43(8): 125566-125566.

WU Qiang, XU Haojun, WEI Yang, PEI Binbin, XUE Yuan. Aerodynamics/flight dynamics coupling characteristics of aircraft under icing conditions[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(8): 125566-125566.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

结冰条件下飞机气动/运动耦合特性

Aerodynamics/flight dynamics coupling characteristics of aircraft under icing conditions

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