小展弦比飞翼大迎角状态空间气动力建模

doi:10.7527/S1000-6893.2020.24539

流体力学与飞行力学

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小展弦比飞翼大迎角状态空间气动力建模

王延灵^1,2, 卜忱^1,2, 杨文^1,2, 沈彦杰^1,2, 冯帅^1,2

1. 航空工业空气动力研究院, 哈尔滨 150001;
2. 低速高雷诺数气动力航空科技重点实验室, 哈尔滨 150001

收稿日期:2020-07-16 修回日期:2020-10-10 发布日期:2020-10-30
通讯作者: 王延灵 E-mail:wangyanlingqdy@163.com

State-space representation of aerodynamica of flying wing with low aspect ratio at high angles of attack

WANG Yanling^1,2, BU Chen^1,2, YANG Wen^1,2, SHEN Yanjie^1,2, FENG Shuai^1,2

1. AVIC Aerodynamics Research Institute, Harbin 150001, China;
2. Aerodynamics for Low Speed and High Reynolds Number, Harbin 150001, China

Received:2020-07-16 Revised:2020-10-10 Published:2020-10-30

摘要/Abstract

摘要： 现代军机大迎角区域性能对空中作战优势的建立有着重要影响，针对大迎角区域建立合适的数学模型对于飞行仿真、稳定性分析和控制律设计都有着重要作用，并且对于解决飞行安全问题和研究飞机失速和尾旋问题具有重要意义。针对小展弦比飞翼标模的迟滞特性，对状态空间模型进行改进，应用大振幅强迫振荡试验数据建立了非定常气动力模型，采用风洞典型机动模拟试验验证状态空间模型的有效性和适用性。结果表明：本文发展并改进的状态空间模型能够准确预测小展弦比飞翼标模不同机动下的非定常气动力特性，具有较强的工程实用性。

关键词: 小展弦比飞翼, 状态空间, 大迎角, 非定常气动力, 典型机动历程

Abstract: The performance of modern military aircraft in areas of high angles of attack has an important influence on the establishment of air combat advantage. The establishment of suitable mathematical models for the high angle of attack area plays an important role in flight simulation, stability analysis and control law design. The state space model is modified to address the hysteresis characteristic of the low aspect ratio flying wing model. The unsteady aerodynamic model is established using the large-amplitude forced oscillation test data. The results show that the state space model developed and improved in this paper can accurately predict the unsteady aerodynamic characteristics of aircraft under different maneuvers and has high engineering practicability.

Key words: low aspect ratio flying wing, state-space, high angles of attack, unsteady aerodynamica, typical maneuver

中图分类号:

V212.1

王延灵, 卜忱, 杨文, 沈彦杰, 冯帅. 小展弦比飞翼大迎角状态空间气动力建模[J]. 航空学报, 2021, 42(7): 124539-124539.

WANG Yanling, BU Chen, YANG Wen, SHEN Yanjie, FENG Shuai. State-space representation of aerodynamica of flying wing with low aspect ratio at high angles of attack[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(7): 124539-124539.

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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

小展弦比飞翼大迎角状态空间气动力建模

State-space representation of aerodynamica of flying wing with low aspect ratio at high angles of attack

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