分布式电推进飞机气动-推进耦合特性地面试验

doi:10.7527/S1000-6893.2021.25389

流体力学与飞行力学

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分布式电推进飞机气动-推进耦合特性地面试验

张星雨^1,2, 高正红¹, 雷涛^2,3, 闵志豪^2,3, 李伟林^2,3, 张晓斌^2,3

1. 西北工业大学航空学院, 西安 710072;
2. 飞机电推进技术工业和信息化部重点实验室, 西安 710072;
3. 西北工业大学自动化学院, 西安 710072

收稿日期:2021-02-07 修回日期:2021-07-16 出版日期:2022-08-15 发布日期:2021-06-18
通讯作者: 张星雨,E-mail:jensonzhangbuaa@126.com E-mail:jensonzhangbuaa@126.com

Ground test on aerodynamic-propulsion coupling characteristics of distributed electric propulsion aircraft

ZHANG Xingyu^1,2, GAO Zhenghong¹, LEI Tao^2,3, MIN Zhihao^2,3, LI Weiling^2,3, ZHANG Xiaobin^2,3

1. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China;
2. Key Laboratory of Aircraft Electric Propulsion Technology, Ministry of Industry and Information Technology, Xi'an 710072, China;
3. School of Automation, Northwestern Polytechnical University, Xi'an 710072, China

Received:2021-02-07 Revised:2021-07-16 Online:2022-08-15 Published:2021-06-18

摘要/Abstract

摘要： 在绿色航空的研究中,分布式电推进(DEP)飞机因其在推进系统的高能量效率展现出巨大的应用潜力。但与传统推进方式的飞机相比,分布式电推进飞机在飞行时存在较强的气动-推进耦合现象。为探究分布式电推进飞机动力系统特性与气动-推进的耦合特性,设计了一套低成本的分布式电推进飞机气动-推进系统地面测试平台,通过地面试验,首先对动力系统的性能开展评估,随后通过地面试验结合数值模拟的方法对分布式电推进技术验证机的气动性能及其气动-推力耦合关系开展了研究。结果表明:涵道对边界层的抽吸效应使得上翼面的气流加速,导致上下翼面形成更大的压强差,使得升力增加;而升力增加引起的气动焦点后移现象,需要引起重视。研究结果为分布式电推进飞机的总体设计提供了参考。

关键词: 分布式电推进, 地面试验, 气动-推进耦合, 电动涵道风扇, 边界层抽吸

Abstract: In the research on green aviation, the Distributed Electric Propulsion (DEP) aircraft shows great application potential because of its high energy efficiency in the propulsion system. However, compared with the traditional propulsion aircraft, the DEP aircraft suffers from strong aerodynamic-propulsion coupling phenomenon in flight. To explore the power system characteristics and aerodynamic-propulsion coupling characteristics of the DEP aircraft, a set of low-cost ground test platform for the aerodynamic-propulsion system of the DEP aircraft is designed. Through the ground test, the performance of the power system is evaluated first, and then the aerodynamic performance and aerodynamic-propulsion coupling relationship of the DEP technology are studied by the ground test and numerical simulation. The results show that the boundary layer suction effect of the electric ducted fan accelerates the air flow on the upper wing, resulting in a larger pressure difference between the upper and lower wings and thus an increase of the lift. The backward movement of the aerodynamic center caused by the increase of lift should be paid attention to. The research results can provide a reference for the overall design of the DEP aircraft.

Key words: distributed electric propulsion, ground test, aerodynamic-propulsion coupling, electric ducted fan, boundary layer suction

中图分类号:

V216.2

张星雨, 高正红, 雷涛, 闵志豪, 李伟林, 张晓斌. 分布式电推进飞机气动-推进耦合特性地面试验[J]. 航空学报, 2022, 43(8): 125389-125389.

ZHANG Xingyu, GAO Zhenghong, LEI Tao, MIN Zhihao, LI Weiling, ZHANG Xiaobin. Ground test on aerodynamic-propulsion coupling characteristics of distributed electric propulsion aircraft[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(8): 125389-125389.

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E-mail：hkxb@buaa.edu.cn

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分布式电推进飞机气动-推进耦合特性地面试验

Ground test on aerodynamic-propulsion coupling characteristics of distributed electric propulsion aircraft

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