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新型复合动力无人飞行器是一种能低空飞行的混体飞行器,主要结构包括气囊、涵道系统和拉力螺旋桨,具有起降方便、稳定安全、载荷大、效率高、成本低的优点,适用于航空物探、航拍观察、农林作业、物资运输及抗震救灾等方面。本研究在该无人飞行器总体方案的基础上,对其涵道系统进行参数设计及优化分析。主要利用Fluent软件对涵道模型进行数值模拟,通过结果的对比分析,得到适合涵道本体的结构参数:桨涵间隙δ=4 mm;涵道高度H=240 mm;桨盘位置h=80 mm;涵道锥角β=5°。
The new composite unmanned aerial vehicle is a low-flying hybrid vehicle, the main structure, including airbags, culverts and pull the propeller, with takeoff and landing convenient, stable and safe, large load, high efficiency, low cost advantages for Aero-geophysical exploration, aerial observation, agriculture and forestry operations, material transportation and earthquake relief and so on. Based on the UAV’s overall scheme, this study conducts parameter design and optimization analysis of its tunneling system. By using the software FLUENT to simulate the model of the tunnel, the structural parameters suitable for the tunnel body are obtained through the comparison of the results: paddle clearance δ = 4 mm; tunnel height H = 240 mm; paddle position h = 80 mm ; Ducted cone angle β = 5 °.