Coupled effects of spatial configuration and phase difference on the aerodynamics of dragonfly-inspired tandem wings

IF 5.8 1区工程技术 Q1 ENGINEERING, AEROSPACE

Aerospace Science and Technology Pub Date : 2025-09-15 DOI:10.1016/j.ast.2025.110943

Xiaojun Yang Prof , Haozhe Wang , Yang Luo , Wenqing Yang , Zhantao Li

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Abstract

The tandem wing configuration of dragonflies, combined with the coupling of multiple motion parameters, exhibits distinctive aerodynamic characteristics that enable agile maneuvering across a wide range of flight conditions. In this study, a numerical simulation approach is employed to analyze the coupled effects of spatial configuration (horizontal spacing and vertical spacing) and phase difference on the aerodynamics of dragonfly-inspired tandem wings in terms of force coefficients, vortex dynamics, and aerodynamic power. The results show that, at small phase differences (less than 45°), increasing the horizontal spacing (2c) between the two wings weakens the downwash effect and enhances the peak lift coefficient of the hindwing, while increasing the vertical spacing (2c) strengthens the wake-capturing effect, leading to a 60% increase in the peak thrust coefficient of the hindwing. Meanwhile, increases in both horizontal and vertical wing spacing enhances propulsion efficiency (η) but reduces power loading (PL). At large phase differences (greater than 135°), increasing wing spacing weakens both lift and thrust while improving power loading. These results provide guidance for the aerodynamic optimization and design of tandem flapping-wing vehicles under varying flight requirements.

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空间构型和相位差对蜻蜓启发串联翼气动特性的耦合影响

蜻蜓的串联翼结构，结合多种运动参数的耦合，显示出独特的空气动力学特性，使其能够在各种飞行条件下灵活机动。本文采用数值模拟的方法，从力系数、涡动力学和气动功率三个方面分析了空间构型（水平间距和垂直间距）和相位差对蜻蜓启发串联翼气动性能的耦合影响。结果表明，在相位差较小（小于45°）时，增大两翼水平间距2c可减弱下洗效应，提高后翼峰值升力系数；增大垂直间距2c可增强尾迹捕获效应，使后翼峰值推力系数提高60%；同时，水平和垂直翼距的增加提高了推进效率（η），但降低了动力负荷（PL）。当相位差较大（大于135°）时，增大机翼间距会削弱升力和推力，同时提高动力负荷。研究结果可为串列扑翼飞行器在不同飞行要求下的气动优化设计提供指导。

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.