一种基于悬停和前飞的涵道螺旋桨设计方法  

A Design Method of Ducted Propellers Based on Hovering and Forward Flight

作　　者：李自启 江翔 万俊明 李鹏飞 Li Ziqi;Jiang Xiang;Wan Junming;Li Pengfei(AVIC Hongdu,Nanchang,Jiangxi,330024)

机构地区：[1]航空工业洪都,江西南昌330024

出　　处：《教练机》2024年第4期55-60,共6页Trainer

基　　金：江西省重大科技研发专项(20203ABC28W002);航空科学基金(2019ZA066002)。

摘　　要：本文提出了一种适用于倾转类无人机的倾转涵道螺旋桨设计方法,使其满足悬停、前飞工况要求的前提下,具有较高的巡航效率和更长的航时。分别以悬停、前飞作为最优设计点进行设计,由叶素动量理论、涵道螺旋桨的涡流理论设计得到螺旋桨的弦长和扭转角,借助CFD计算其气动性能。根据其计算结果,修正涵道拉力占比。根据总电量提出航时要求,通过综合悬停、前飞两个状态的功率,对其进行优化得到一个较为精确的权值,经过对悬停、前飞两个状态的弦长和扭转角进行权值计算,得到最终的涵道螺旋桨并进行CFD计算。结果表明:在满足悬停、前飞两个工况的前提下,巡航效率为92.3%,航时增加4.4%。This paper introduces a design method of tilting ducted propellers,which is applicable to tilting unmanned air vehicles(UAV),so that the UAV can be featured with higher cruise efficiency and longer endurance on the premise of meeting the working conditions of hovering and forward flight.Taking hovering and forward flight as the optimal design point,the chord length and twist angle of the propeller are designed by the blade element momentum theory and the vortex theory of ducted propellers,and its aerodynamic performance is calculated with the help of Computational Fluid Dynamics(CFD).The ducted thrust proportion is corrected according to the calculation result.Based on the total power capacity,the flight endurance requirement is put forward.By integrating the power of the two states of hovering and forward flight,it is optimized to obtain a more accurate weight value.After calculating the weight values of the chord length and twist angle at the above two states,the final ducted propeller is obtained and the CFD calculation is carried out.The results show that the cruise efficiency is 92.3% and the flight endurance is increased by 4.4%on the premise of meeting the working conditions of hovering and forward flight.

关 键 词：倾转涵道螺旋桨设计 涵道螺旋桨的涡流理论 耦合CFD设计 巡航效率 航时 

分 类 号：U66[交通运输工程—船舶及航道工程]