摆线桨气动性能研究进展

Advances in the aerodynamics research of cylcoidal propeller

摆线桨是由两个以上桨叶组成的新型全向矢量推力装置,近年来已成为国外航空领域研究热点,但国内研究极少。从理论分析、数值模拟和实验研究三个方面综述了国外和国内摆线桨气动性能研究进展;对摆线桨气动效率进行了讨论,发现目前对摆线桨气动效率高低的结论虽不尽一致,但最新试验数据已表明其可具备比旋翼等传统升力装置更高的气动效率;最后对摆线桨气动性能研究进行了展望。

Cycloidal propeller is a new device composed of two or more blades, which can provide thrust in all directions. It has become a research hotspot in the field of aeronautics research in foreign countries re cent years. In this paper, domestic and foreign progress of research on the aerodynamics performance of cy- cloidal propeller is summarized, which include theoretical analysis, numerical simulation and experiments. It is found that the precision of the current aerodynamic force computation models for cyclorotor are still not e- nough and cannot be used widely, thus there is need to develop a theoretical model which can consider the dynamic stall, induced drag and downwash effect; and there is little discussion about the mechanism of un steady aerodynamics of cyclorotor. The numerical analysis method of cyclorotor is still developing and need to be combined with PIV experiments in future to explain the flow mechanism of the cyclorotor. The aerody- namics efficiency of cycloidal propeller is also been discussed, it is found that the conclusions of cycloidal pro- peller＇s aerodynamics efficiency in papers are not the same, but the recent experimental data has shown it can be higher than conventional lift device, such as rotor. Finally, some further research topics on the aerody- namics performance are proposed.