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论文:2022,Vol:40,Issue(5):1100-1108 |
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引用本文： |
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程毅, 余智豪, 赵金瑞, 周云. 分布式吊舱机翼建模与气动弹性分析[J]. 西北工业大学学报 |
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CHENG Yi, YU Zhihao, ZHAO Jinrui, ZHOU Yun. Distributed pod wing modeling and aeroelastic analysis[J]. Journal of Northwestern Polytechnical University |
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| 分布式吊舱机翼建模与气动弹性分析 |
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| 程毅, 余智豪, 赵金瑞, 周云 |
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| 中国直升机设计研究所 直升机旋翼动力学重点实验室, 江西 景德镇 333001 |
| 摘要: |
| 基于准线性化隐式建模方法,建立适用于大展弦比机翼的动力学模型,研究分布式吊舱机翼的气动弹性特点。其中结构模型采用中等变形梁模型,气动模型采用准定常理论,利用小扰动和有限差分法,建立求解机翼气弹稳定性的方法。在验证结构和气动模型准确性基础上,研究吊舱的个数、质量、展向站位、弦向/法向偏置等参数对分布式吊舱机翼气动特性的影响。分析结果发现:吊舱越靠近机翼中部、弦向和法向偏置越大机翼稳定性越高,但质量分布不均时反而会降低稳定性;机翼经历了振动收敛、单频简谐振动和倍频简谐振动,其颤振形式为面内外弯曲和扭转耦合,三维效应显著。文中的方法能够有效描述分布式吊舱机翼的气动弹性特性。 |
| 关键词:
大展弦比机翼
分布式吊舱
气动弹性
颤振形式
简谐振动
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| Distributed pod wing modeling and aeroelastic analysis |
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| CHENG Yi, YU Zhihao, ZHAO Jinrui, ZHOU Yun |
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| Science and Technology on Rotorcraft Aeromechanics Laboratory, CHRDI, Jingdezhen 333001, China |
| Abstract: |
| Based on the quasi-linearized implicit aeroelastic modeling method, the aeroelastic dynamics model for high-aspect ratio wing was established to study the aeroelastic characteristics. The structural model adopts the moderately deformed beam model, the aerodynamic model adopts the quasi-steady theory, and the small perturbation and finite difference method are used to establish the method to solve the aeroelastic stability of the wing. On the basis of verifying the accuracy of the structure and aerodynamic model, the influences of the number, mass, spanwise position, chord/vertical bias and other parameters on the aerodynamic characteristics of the distributed pod wing are studied. The results show that the closer the pod is to the middle of the wing, the greater the chord and vertical bias is, the higher the wing stability will be, but the uneven mass distribution will reduce the stability; the wing has experienced vibration attenuation, single-frequency harmonic vibration and multi-frequency periodic vibration, the fuller mode is the coupling of in-plane bending and out of plane bending and torsional motion, and the three-dimensional effect is significant. The method presented in this paper can effectively describe the aeroelastic characteristics of distributed pod wing. |
| Key words:
high aspect ratio wings
distributed pod
aeroelasticity
flutter model
harmonic vibration
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| 收稿日期: 2021-12-14
修回日期:
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| DOI: 10.1051/jnwpu/20224051100 |
| 通讯作者: 周云(1986-),中国直升机设计研究所高级工程师,主要从事旋翼气动弹性力学研究。e-mail:zhouyun1986@aliyun.com
Email：zhouyun1986@aliyun.com |
| 作者简介: 程毅(1994—),中国直升机设计研究所工程师,主要从事旋翼动力学研究。
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| 程毅 在本刊中的所有文章 |
| 余智豪 在本刊中的所有文章 |
| 赵金瑞 在本刊中的所有文章 |
| 周云 在本刊中的所有文章 |
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