유인 드론 상반회전 생체모방 프로펠러의 설계 및 추력 성능에 대한 연구

초록

In this research, a biomimetic, eagle-wing-type propeller was designed and applied to four pairs of counter-rotating propeller system to provide the necessary payload for a manned drone. The aerodynamic and noise characteristics were identified by model testing and compared with the numerical results using Ansys CFX 19.0 software. The structural analysis were also performed to reinforce the biomimetic blades by modifying the solid profiles near the hub. The aerodynamic performances of the counter-rotating propeller system were measured in terms of thrust forces by changing the distance between two counter- rotating propellers and the pitch angle of the lower propeller. Based on the experiment , the best aerodynamic performance was identified at the pitch angle of 5° higher for the downstream propeller than that of upstream one and the non-dimensional distance of 0.3 between two counter-rotating propellers.

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