摘要
为研究高原环境对小型旋翼气动性能的影响,采用数值模拟方法预测低雷诺数小型旋翼的悬停性能,并通过拉力试验验证了该方法的可行性。分别对转速相同海拔高度不同和海拔高度相同转速不同两种情况下的小型旋翼悬停性能进行数值模拟,揭示了高原环境对小型旋翼悬停性能的影响规律,指出高原环境与海平面处相比,小型旋翼在同样转速条件下的拉力和功率均有明显下降,并建议未来对高原环境下使用的旋翼几何构型进行优化设计。
To study the influence of the plateau environment on the aerodynamic performance of the small rotor,a numerical simulation method is employed to predict the hover performance of the small rotor with low Reynolds number,and the feasibility of this method is verified through the tensile test.Numerical simulations are performed under two cases of the same rotating rate,different altitude and the same altitude,different rotating rates,to evaluate the hover performance of the small rotor.The simulation results reveal the influence of the plateau environment on the hover performance of small rotors.Compared the plateau environment with the plain environment,the tension and the power of the small rotor at the same rotating rate are significantly reduced in the plateau environment.It is suggested that the rotor geometry used in the plateau environment should be optimized in the future.
作者
姜心淮
赵良玉
李兴城
Jiang Xinhuai;Zhao Liangyu;Li Xingcheng(School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China)
出处
《航空兵器》
CSCD
北大核心
2020年第5期58-62,共5页
Aero Weaponry
基金
国家自然科学基金项目(11532002)。
关键词
小型旋翼
高原环境
悬停
数值模拟
拉力试验
small rotor
plateau environment
hover
numerical simulation
tensile test
