混合动力电力推进系统优化面临的挑战.pdf

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1、ZAV Zentrum fr Aviatik AERO Hydrogen&Battery Summit 2025,Friedrichshafen,GermanyChallenges for the Optimisation of Hybrid-Electric Propulsion SystemsDr.-Ing.Wilm FriedrichsHead of Aerodynamics and Aircraft DesignZHAW Zurich University of Applied SciencesSchool of EngineeringZAV Centre for AviationWi

2、nterthur,SwitzerlandZurich University of Applied SciencesSources:Hybrid-Electric Propulsion SystemsBattery Only for short ranges Moderate improvement of energy densityComponents Lots of progress and new solutions Obviously still many challengesPropulsion type Mostly propeller aircraftAircraft design

3、 Retrofit for demonstration Clean sheet preferredTrends at the AERO Hydrogen&Battery Summit 2024Vaeridion,Elfly,APUSZurich University of Applied SciencesSources:Challenges for the Optimisation of Hybrid-Electric Propulsion Systems Aircraft missions Airspeed,range,altitude,size Technology review Rang

4、e&endurance Efficiency&sustainability Key challengesOverviewIATAZurich University of Applied SciencesSources:Propeller Aircraft MissionsMissionMostly used for shorter direct or feeder flightsCorrelation Shorter range Fewer seats Lower speedsSize,Range,and AirspeedDelta Airlines,Walton,AdlerZurich Un

5、iversity of Applied SciencesSources:Propeller Aircraft Missions Propellers are most efficient at moderate airspeeds At higher Mach numbers transonic effects result in noise and lower efficiencyTypical multi-engine piston 130 200 kn Ceiling FL 150 250 Range 1,000 2,000 kmTypical turboprop 260 330 kn

6、Ceiling FL 250 300 Range 1,500 2,500 kmFlight EnvelopeAlves,GudmundssonZurich University of Applied SciencesSources:Technology Review Jet:=2212 High altitude beneficial Propeller:=21=11 No apparent altitude dependency for propeller Battery-powered propeller:=BSFC not valid for battery,use of BSEM No