Experimental research on aero-propulsion coupling characteristics of a distributed electric propulsion aircraft  

作　　者：Xingyu ZHANG Wei ZHANG Weilin LI Xiaobin ZHANG Tao LEI 

机构地区：[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

出　　处：《Chinese Journal of Aeronautics》2023年第2期201-212,共12页中国航空学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.51877178)。

摘　　要：Distributed Electric Propulsion(DEP)aircraft use multiple electric motors to drive the propulsors,which gives potential benefits to aerodynamic-propulsion interaction.To investigate and quantify the aerodynamic-propulsion interaction effect of the wing section,we built a DEP demonstrator with 24"high-lift"Electric Ducted Fans(EDFs)distributed along the wing’s trailing edge.This paper explores and compares the aero-propulsion coupling characteristics under various upstream speed,throttle,and EDF mounting surface deflection angles using a series of wind tunnel tests.We compare various lift-augmentation power conditions to the clean configuration without propulsion unit under the experiment condition of 15-25 m/s freestream flow and angles of attack from-4°to 16°.The comparison of computational results to the experimental results verifies the effectiveness of the computational fluid dynamic analysis method and the modeling method for the DEP configuration.The results show that the EDFs can produce significant lift increment and drag reduction simultaneously,which is accordant with the potential benefit of Boundary Layer Ingestion(BLI)at low airspeed.

关 键 词：Aero-propulsion coupling Boundary layer ingestion Distributed electric propulsion Short Take-Off and Landing(STOL) Wind-tunnel experiment 

分 类 号：V216.2[航空宇航科学与技术—航空宇航推进理论与工程]