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

Chinese Journal of Aeronautics 2023年第2期36卷 201-212页

作者： Xingyu ZHANG Wei ZHANG Weilin LI Xiaobin ZHANG Tao LEI School of Aeronautics Northwestern Polytechnical UniversityXi'an 710072China Key Laboratory of Aircraft electric propulsion Technology Ministry of Industry and Information TechnologyXi'an 710072China School of Automation Northwestern Polytechnical UniversityXi'an 710072China

distributed electric propulsion(DEP)aircraft use multiple electric motors to drive the propulsors,which gives potential benefits to aerodynamic-propulsion *** 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 *** 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 *** 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 *** 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

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Aerodynamic design of tractor propeller for high-performance distributed electric propulsion aircraft

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Chinese Journal of Aeronautics 2021年第10期34卷 20-35页

作者： Kelei WANG Zhou ZHOU Zhongyun FAN Jiahao GUO School of Aeronautics Northwestern Poly technical UniversityXi'an 710072China

Aiming to maximize the aerodynamic performance of the distributed electric propulsion(DEP)aircraft,a hybrid design framework which focuses on the aerodynamic performance of the propeller/wing integration has been developed and validated ***-fidelity modelling for propeller aerodynamics has been used to achieve computational efficiency with reasonable *** optimizing the aerodynamic loading distributions on the tractor propeller disk,the induced slipstream is redistributed into a form that is beneficial for the wing downstream,based on which the propeller blade geometry is generated through a rapid inversed design *** compared with the Minimum Induced Loss(MIL)propeller at a specified thrust level,significant improvements of both the lift-to-drag ratio of the wing and the propeller/wing integrated aerodynamic efficiency is achieved,which shows great promise to deliver aerodynamic benefits for the wing within the propeller slipstream without any additional devices.

关键词： Aerodynamic loading distributions Aerodynamic performance distributed electric propulsion Hybrid design framework Propeller/wing integration Variable-fidelity propeller modelling and aerodynamic analyses methods

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Design of hybrid-electric aircraft with fault-tolerance considerations

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Chinese Journal of Aeronautics 2023年第2期36卷 160-178页

作者： Valerio MARCIELLO Francesco OREFICE Fabrizio NICOLOSI Danilo CILIBERTI Pierluigi DELLA VECCHIA Department of Industrial Engineering University of Naples"FedericoⅡ"Naples 80125Italy

The potential benefits of hybrid-electric or all-electric propulsion have led to a growing interest in this topic over the past *** design of propulsion systems and innovative configurations has been extensively discussed in literature,but steps towards higher levels of technological readiness,optimisation algorithms based on reliable weight estimation and simulationbased mission analysis are *** paper focuses on the integration of a method for evaluating the lateral-directional controllability of an aircraft within a design chain that integrates aero-propulsive interactions,accurate modelling of the fuel system,and mid-fidelity estimation of the structural ***,the present work proposes a strategy for powerplant management in scenarios with an inoperative chain *** of hybrid-electric propulsion on the design of the vertical tail plane are evaluated involving the analysis of multiple failure scenarios and certification *** proposed application concerns a commuter aircraft.

关键词： distributed electric propulsion Failure management Fault-tolerance analysis Hybrid-electric aircraft Lateral-directional controllability

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