飞行器的螺旋桨动力气动干扰及气动弹性研究 | |
Alternative Title | Propeller-driven aerodynamic disturbance and aeroelasticity study of flight vehicles |
吕召阳 | |
Thesis Advisor | 聂雪媛 |
2022-05-15 | |
Degree Grantor | 中国科学院大学 |
Place of Conferral | 北京 |
Subtype | 硕士 |
Degree Discipline | 工程力学 |
Keyword | 螺旋桨/机翼气动干扰,CFD/CSD耦合,颤振,分布式动力,神经网络 |
Abstract | 随着21世纪高效节能理念和长航时概念的提出以及分布式动力技术的应用,大展弦比分布式螺旋桨动力飞行器逐渐成为了研究热点。对于发展大展弦比分布式螺旋桨动力飞行器来说:一方面,将会面临螺旋桨/机翼干扰问题;另一方面,将会面临机翼展弦比变化对机翼气动性能、结构动力学性能以及颤振特性的影响。同时,在对飞机进行气动优化和颤振主动控制研究中,将会面临全阶CFD仿真计算时间长、成本高等问题。因此,系统地了解和认识,螺旋桨滑流对机翼的气动干扰、机翼几何特性对机翼的气动特性和颤振特性的影响规律以及发展气动降阶模型,对大展弦比分布式螺旋桨动力飞机的研制、气动优化和实现颤振主动控制有着重要的指导意义。基于此,本文开展了一系列研究,其主要研究内容和进展如下: |
Other Abstract | With the concept of energy efficiency and long flight time in the 21st century and the application of distributed power technology, large span ratio distributed propeller-powered vehicles have gradually become a research hotspot. For the development of large span ratio distributed propeller-powered aircraft: on the one hand, it will face the problem of propeller/wing interference; on the other hand, it will face the influence of wing span ratio change on wing aerodynamic performance, structural dynamics performance and flutter characteristics. At the same time, in the research of aerodynamic optimization and active control of flutter, we will face the problems of long computation time and high cost of full-order CFD simulation. Therefore, a systematic understanding of the aerodynamic interference of propeller slipstream on the wing, the influence of wing geometry on the aerodynamic and flutter characteristics, and the development of aerodynamic downscaling models are important for the development, aerodynamic optimization and active flutter control of large span ratio distributed propeller-powered aircraft. Based on this, a series of studies are carried out in this thesis, and the main research contents and progress are as follows: |
Language | 中文 |
Document Type | 学位论文 |
Identifier | http://dspace.imech.ac.cn/handle/311007/89131 |
Collection | 流固耦合系统力学重点实验室 |
Recommended Citation GB/T 7714 | 吕召阳. 飞行器的螺旋桨动力气动干扰及气动弹性研究[D]. 北京. 中国科学院大学,2022. |
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飞行器的螺旋桨动力气动干扰及气动弹性研究(5358KB) | 学位论文 | 开放获取 | CC BY-NC-SA | Application Full Text |
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