不同旋翼间距下共轴双旋翼无人机的气动特性

雷瑶; 叶艺强; 王恒达; 黄宇晖

doi:10.13433/j.cnki.1003-8728.20200352

不同旋翼间距下共轴双旋翼无人机的气动特性

doi: 10.13433/j.cnki.1003-8728.20200352

雷瑶^{1, 2,},
叶艺强¹,
王恒达¹,
黄宇晖¹

1.
福州大学机械工程及自动化学院, 福州　350116
2.
福州大学流体动力与电液智能控制福建省高校重点实验室, 福州　350116

基金项目: 国家自然科学基金项目（51505087）与福州大学晋江科教园资助项目（2019-JJFDKY-59）

详细信息

作者简介:
雷瑶（1985−），副教授，博士，研究方向为多旋翼飞行器气动性能分析，yaolei@fzu.edu.cn

中图分类号: TG156
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- 文章访问数: 116
- HTML全文浏览量: 62
- PDF下载量: 11
- 被引次数: 0
出版历程
- 收稿日期: 2020-05-14
- 刊出日期: 2022-03-05

Study on Aerodynamic Characteristics of Coaxial Rotors UAV with Different Rotor Spacing

1.
School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China
2.
Hydrodynamic and Electrohydraulic Intelligent Control Key Laboratory , Fuzhou University, Fuzhou 350116, China

摘要

摘要: 为了获得共轴双旋翼的最佳气动性能，对不同旋翼间距比的共轴双旋翼无人机进行了试验和数值模拟。首先，对共轴双旋翼的气动性能参数进行了理论分析。然后，构造共轴双旋翼模型进行数值模拟，并通过自行设计的试验获得了升力和功率。同时，将试验获得的升力和功耗转化为功率载荷和悬停效率进行气动分析。最后，结合试验和仿真结果表明，工作转速2 200 r/min下，与i = 0.75在相比，当间距比i = 0.385时，功率载荷提高了1.5%，总效率提高了大约5.64%。该间距比下的气动性能较好，可以作为共轴旋翼无人机的最佳气动布局。
- 共轴双旋翼 /
- 旋翼间距 /
- 功率载荷 /
- 悬停效率 /
- 气动性能
Abstract: In order to obtain the best aerodynamic performance of the coaxial rotors, the test and numerical simulation of the coaxial rotors UAV with different rotor spacing ratios were carried out in this paper. Firstly, the aerodynamic performance parameters of the coaxial rotors are analyzed theoretically. Secondly, the coaxial rotors model is established and applied for numerical simulation, and the thrust and power are obtained by self-designed experiments. Moreover, the thrust and power obtained from the test are converted into power loading and hovering efficiency with aerodynamic analysis. Finally, combined with the test and simulation results, it is shown that the power loading increased by 1.5%, and the overall efficiency increased by about 5.64% at the spacing ratio i = 0.385 compared with i = 0.75 for the operation mode of 2 200 r/min. It is concluded that the aerodynamic performance at i = 0.385 is better, which can be used as the best aerodynamic layout of the coaxial rotors UAV.
- coaxial rotors /
- rotor spacing /
- power loading /
- hover efficiency /
- aerodynamic performance

HTML全文

图 1 共轴双旋翼在悬停时旋翼的尾迹涡和下洗流的流动模型

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图 2 试验装置及参数测试流程

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图 3 与0.75R对比的功率载荷变化图

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图 4 与0.75R对比的性能指标变化图

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图 5 与0.75R对比的功率系数变化图

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图 6 网格划分效果

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图 7 悬停时共轴双旋翼的流线分布(2200 r/min)

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图 8 悬停时下洗流的诱导速度分布(2200 r/min)

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图 9 悬停时共轴双旋翼的涡流分布(2200 r/min)

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