Innovative design of rotor blades for coaxial UAVs based on simulations and experiments

IF 5.8 1区 工程技术 Q1 ENGINEERING, AEROSPACE
Zhen Wang , Qi Yuan , Yi Zhu , Wenbin Gu , Xingbo Xie
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Abstract

The rational design of three-dimensional (3D) rotors plays a crucial role in enhancing the flight efficiency of coaxial dual-rotor unmanned aerial vehicles (UAVs). Currently, the overall design methodology from the generation of two-dimensional (2D) airfoils to the design of 3D rotors is not clearly defined. In light of this, this paper puts forward a comprehensive whole-process design approach that integrates airfoil generation, 3D rotor construction, and performance testing of physical blades. This approach is founded on rigorous simulation performance analysis and comparative experiments. Specifically, a mathematical model of 3D rotor dynamics has been established. Systematically optimizing the aerodynamic performance of the 3D rotor is achieved by taking into account key parameters such as the lift-to-drag ratio, twist angle, and length. The strength of the composite material layered rotor is verified through fluid-structure coupling calculations using the rotor composite material layering technology, and the safe elastic deformation range of the rotor is determined. The performance of the designed blades is experimentally compared with that of conventional blades of the same size. Under the same dimensional constraints, the mass of the designed blades is reduced by 19.29%, the average rotational noise drops by 2.3%, and the total current consumption decreases by 18.53%. The experimental results conclusively demonstrate that the proposed 3D composite rotor design approach, predicated on 2D optimized airfoils, significantly enhances the overall flight efficiency of the coaxial dual-rotor UAV. This innovative method not only furnishes a dependable and efficient means for designing the rotors of such vehicles but also offers valuable insights and a significant reference framework for the rapid and high-performance design of coaxial dual-rotor UAV rotors.
基于仿真与实验的同轴无人机旋翼叶片创新设计
三维旋翼的合理设计对提高同轴双旋翼无人机的飞行效率起着至关重要的作用。目前,从生成二维(2D)翼型到设计三维旋翼的总体设计方法还没有明确定义。基于此,本文提出了一种集翼型生成、三维旋翼构建、物理叶片性能测试为一体的综合全流程设计方法。该方法建立在严格的仿真性能分析和对比实验的基础上。具体而言,建立了转子三维动力学的数学模型。通过考虑升阻比、扭角、长度等关键参数,实现了三维转子气动性能的系统优化。采用转子复合材料分层技术,通过流固耦合计算验证复合材料分层转子的强度,确定转子的安全弹性变形范围。对所设计叶片的性能与相同尺寸的常规叶片进行了实验比较。在相同尺寸约束下,设计的叶片质量降低19.29%,平均旋转噪声降低2.3%,总电流消耗降低18.53%。实验结果表明,基于二维优化翼型的三维复合旋翼设计方法显著提高了同轴双旋翼无人机的整体飞行效率。这一创新方法不仅为该类飞行器的旋翼设计提供了可靠、高效的手段,而且为同轴双旋翼无人机旋翼的快速、高性能设计提供了有价值的见解和重要的参考框架。
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
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.
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