Investigation of the aerodynamic performance of the dragonfly-inspired tandem wings considering the coupling between the stroke plane and phase difference

IF 5 1区工程技术 Q1 ENGINEERING, AEROSPACE Aerospace Science and Technology Pub Date : 2024-11-06 DOI:10.1016/j.ast.2024.109717

Xiaojun Yang , Yang Luo , Xinyu Lang , Wei Wang

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Abstract

The dragonfly's tandem wings can make full use of the interference of various spatial vortices to obtain efficient flight capability. The complex coupling among multiple motion parameters will have an important influence on the interference between the forewing (FW) and hindwing (HW). In this paper, the aerodynamic performance of the dragonfly-inspired tandem wings is analyzed using the Computational Fluid Dynamics (CFD) method considering the coupling effect of the stroke plane and phase difference. The variation of the force coefficient, vortex structure and aerodynamic efficiency of the tandem wings in forward flight are analyzed, respectively. The results show that the stroke plane angle affects the distribution of the leading edge vortex (LEV) and trailing edge vortex (TEV), which primarily controls the trend of horizontal force variation. The phase difference of tandem wings will change the fluctuation of the horizontal force coefficient curve by affecting the meeting time of the forewing and hindwing. However, with the increase of stroke plane angle, the fluctuation of aerodynamic coefficient caused by phase difference will decrease. The propulsion efficiency(η) and power loading(PL) can be improved through increasing the stroke plane angle and selecting a reasonable phase difference. The conclusion can provide theoretical guidance for the design of the dragonfly-inspired tandem flapping wing aircraft (DTFWA) and the choice of motion parameters.

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考虑冲程平面与相位差耦合的蜻蜓启发式串联翼气动性能研究

蜻蜓的双翼可以充分利用各种空间涡流的干扰来获得高效的飞行能力。多种运动参数之间的复杂耦合将对前翼（FW）和后翼（HW）之间的干涉产生重要影响。本文采用计算流体动力学（CFD）方法分析了蜻蜓启发式串联翼的气动性能，考虑了冲程平面和相位差的耦合效应。分别分析了前飞时串联翼的力系数、涡流结构和气动效率的变化。结果表明，冲程平面角度会影响前缘涡流（LEV）和后缘涡流（TEV）的分布，主要控制水平力的变化趋势。串联翼的相位差会影响前翼和后翼的交会时间，从而改变水平力系数曲线的波动。但是，随着冲程平面角的增大，相位差引起的气动系数波动会减小。通过增大冲程平面角和选择合理的相位差，可以提高推进效率（η）和功率负荷（PL）。该结论可为蜻蜓启发的串联拍翼飞行器（DTFWA）的设计和运动参数的选择提供理论指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Aerospace Science and Technology 工程技术-工程：宇航

CiteScore

10.30

自引率

28.60%

发文量

654

审稿时长

54 days

期刊介绍： Aerospace Science and Technology publishes articles of outstanding scientific quality. Each article is reviewed by two referees. The journal welcomes papers from a wide range of countries. This journal publishes original papers, review articles and short communications related to all fields of aerospace research, fundamental and applied, potential applications of which are clearly related to: • The design and the manufacture of aircraft, helicopters, missiles, launchers and satellites • The control of their environment • The study of various systems they are involved in, as supports or as targets. Authors are invited to submit papers on new advances in the following topics to aerospace applications: • Fluid dynamics • Energetics and propulsion • Materials and structures • Flight mechanics • Navigation, guidance and control • Acoustics • Optics • Electromagnetism and radar • Signal and image processing • Information processing • Data fusion • Decision aid • Human behaviour • Robotics and intelligent systems • Complex system engineering. Etc.