涵道式飞行汽车螺旋桨的气动特性与涵道外形设计

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关键词：飞行汽车；涵道螺旋桨；叶素动量理论;数值仿真；气动特性；可变涵道设计中图分类号：V221 文献标识码：Adoi： 10. 37188/OPE. 20263401.0098 CSTR：32169.14.OPE.20263401.0098

Aerodynamic characteristics and ducted shape design of ducted flying car propeller

ZHANG Zengkui 1，2 ，LI Jingyang ⋅1，2，3* ， YIN Mingwei³， HAO Wenqian 1，2 ， XIE Jiamiao 1，2 WANG Zhe 1，2 ， GAO Shuyu1.2

（1. School of Aeronautics and Astronautics， North University ofChina， Taiyuan O3Oo51， China;2.Shanxi Engineering Research Center of Unmanned Aerial Vehicle，North University of China， Taiyuan 030051， China;3.Beijing Tsing Aero Armament Technology Co.，Ltd.，Beijing1O21OO，China） * Corresponding author，E-mail： 18911638156@163.com

Abstract：To design a ducted propeler that satisfies the requirement forhigh thrust eficiencyduring hover in a ducted flying car，a dedicated design methodology is proposed. Blade geometry is developed using blade element momentum theory in conjunction with ducted propeller vortex theory，and the resulting designs are refined through CFD-based corrections to meet target performance. Under hover conditions，the aerodynamic performance of the ducted propeller is evaluated and compared with that of an isolated propeller. The results indicate that，due to suppression of blade-tip vortices and the additional lift generated by the duct，total thrust is increased by 11.1% while power consumption is reduced by 10.5% relative to the isolated propeller. To further enhance hover performance，an innovative variable-duct propeller configuration is proposed，in which the flare expansion angle is dynamically adjusted to maximize inlet airflow during hover，yielding a 15.53% increase in total thrust. The study validates a high-accuracy design framework that integrates blade element momentum theory with CFD correction，providing theoretical and technical support for efficient aerodynamic design of propulsion systems for flying vehicles.

Key words： flying car； ducted propeler； blade element momentum theory； numerical simulation； aerodynamic characteristic;variable duct design

1引言

随着城市空中交通（UrbanAirMobility，UAM）概念的兴起，飞行汽车成为未来交通的重要发展方向。（剩余15167字）