| 雷瑶,王恒达,叶艺强,黄宇晖.微型四旋翼飞行器最佳旋翼间距布局研究[J].计算力学学报,2020,37(4):412~416 |
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| 微型四旋翼飞行器最佳旋翼间距布局研究 |
| Optimal analysis of rotor arrangement for a micro quadrotor aircraft |
| 投稿时间：2019-09-11 修订日期：2019-10-14 |
| DOI：10.7511/jslx20190911001 |
| 中文关键词: 四旋翼 旋翼间距 悬停状态 CFD 气动干扰 |
| 英文关键词:quadrotor rotor spacing hover CFD aerodynamic interference |
| 基金项目:国家自然科学基金（51505087）；国家留学基金（201806655008）资助项目. |
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| 中文摘要: |
| 为研究悬停状态下不同翼间距对微型四旋翼飞行器气动性能的影响，结合整机试验和数值模拟，分析了不同旋翼间距下微型四旋翼飞行器拉力和功耗的变化规律。在样机试验中，通过搭建试验平台对间距比l/d范围1.1~2.0的微型四旋翼飞行器进行了拉力和功耗的测量，确定了相同功耗条件下具有较大拉力的最佳旋翼间距范围。为更直观地得到旋翼间气动干扰对整机气动性能的影响，通过CFD方法对微型四旋翼飞行器流场进行了仿真，得到了不同间距下的压力、流线和涡量分布情况，进而对四旋翼飞行器在不同旋翼间距下表现出的不同气动特性进行对比。结果表明，与无干扰状态下的孤立单旋翼相比，四旋翼间存在的气动干扰在合理的旋翼间距下可以保持涡流完整，并有助于提升四旋翼系统的拉力。最后，通过试验和仿真对比发现，在旋翼间距为1.8d时，四旋翼飞行器具有较大的功率载荷和良好的气动特性，是该四旋翼飞行器整机的最佳气动布局。 |
| 英文摘要: |
| In order to study the influence of aerodynamic performance of micro quadrotor aircraft with different rotor spacing in hover,both the thrust and power of the micro quadrotor aircraft are analyzed with the experimental and numerical simulation results.For the experiments,thrust and power of quadrotor with rotor spacing ratios arranged from 1.1 to 2.0 are measured to find out the optimal rotor arrangement the best aerodynamic performance.Additionally,CFD is applied to obtain the accurate effect of aerodynamic interference between rotors with the pressure distribution,streamline distribution and vorticity distribution.Combined with the experimental results,different aerodynamic characteristics with different rotor ratio are analyzed theoretically.Results showed that moderate aerodynamic interference between quadrotor can keep the vortexes intact,so that the thrust can be increased effectively compared with the isolated single rotor.At last,the rotor spacing at 1.8d is proved to be the optimal rotor arrangement with biggest power loading and best aerodynamic characteristics. |
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