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论文:2014,Vol:32,Issue(3):341-345 |
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引用本文： |
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王年华, 赵旭, 李晓东, 郭汉青. 上凸下凹前后对称翼型低速气动特性研究[J]. 西北工业大学 |
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Wang Nianhua, Zhao Xu, Li Xiaodong, Guo Hanqing. Exploring Aerodynamic Characteristics of Cambered Fore-and-Aft Symmetrical Airfoil at Low Speed[J]. Northwestern polytechnical university |
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| 上凸下凹前后对称翼型低速气动特性研究 |
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| 王年华, 赵旭, 李晓东, 郭汉青 |
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| 西北工业大学 航空学院, 陕西 西安 710072 |
| 摘要: |
| 旋转机翼无人机由于兼具垂直起降和高速巡航性能而备受青睐,旋转机翼翼型不同于固定翼,对旋转机翼翼型的设计和气动特性的研究具有实际意义。针对旋转机翼翼型展开有弯度的前后对称翼型设计,通过亚音速多工况数值计算筛选出升阻特性最优的翼型——弯度10%、厚度12%的上凸下凹前后对称翼型GOE-10-12。为了验证数值计算的准确性,进行了3种低速工况(20 m/s、30m/s、40 m/s)的风洞试验,结果表明数值计算和试验获得的升力系数和阻力系数吻合较好,新设计的翼型具有良好的升阻力特性,适合应用于旋转机翼。 |
| 关键词:
旋转机翼
前后对称翼型
上凸下凹
CFD
风洞试验
气动特性
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| Exploring Aerodynamic Characteristics of Cambered Fore-and-Aft Symmetrical Airfoil at Low Speed |
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| Wang Nianhua, Zhao Xu, Li Xiaodong, Guo Hanqing |
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| College of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China |
| Abstract: |
| An unmanned aerial vehicle (UAV) with rotational wings is popular because it can take off and land vertically and cruise at high speed. The airfoil with rotational wings is different from the airfoil with fixed wings. The difference is significant for the design of the airfoil with rotational wings and for the study of its aerodynamic charac-teristics. Therefore, we design a cambered (upper surface convex and lower surface concave/USCLSC) and fore-and-aft symmetrical airfoils for the UAV with rotational wings. The subsonic numerical calculation is performed to determine the airfoil with the optimal lift drag ratio, whose maximum camber is 10%, and maximum thickness is 12%. To verify the accuracy of the numerical calculation, we conduct wind tunnel tests under three low speed work conditions:V=20 m/s, 30 m/s and 40 m/s. The test results, given in Figs.3 through 9, and their analysis show preliminarily that the lift coefficient and drag coefficient obtained with the numerical calculation agree well with those obtained with the test results, which indicate that the airfoil we thus designed has good aerodynamic charac-teristics and is suitable for a rotational wing. |
| Key words:
aerodynamics
airfoils
computational fluid dynamics
design
drag coefficient
lift drag ratio
turbulence models
unmanned aerial vehicles (UAV)
wind tunnels
wings
rotational wing
fore-and-aft symmetrical airfoil
wind tunnel test
aerodynamic characteristics
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| 收稿日期: 2013-09-26
修回日期:
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| DOI: |
| 基金项目: 2012年国家大学生创新训练计划项目(201210699018)资助 |
| 通讯作者:
Email： |
| 作者简介: 王年华(1992-),西北工业大学本科生,主要从事空气动力学研究。
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参考文献: |
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