Preliminary design of hybrid-electric propulsion systems for emerging urban air Mobility rotorcraft architecture

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dc.contributor.authorSaias, Chana Anna
dc.contributor.authorGoulos, Ioannis
dc.contributor.authorRoumeliotis, Ioannis
dc.contributor.authorPachidis, Vassilios
dc.contributor.authorBacic, Marko
dc.date.accessioned2021-08-18T12:11:19Z
dc.date.available2021-08-18T12:11:19Z
dc.date.issued2021-08-09
dc.description.abstractThe increasing demands for air-taxi operations together with the ambitious targets for reduced environmental impact have driven significant interest in alternative rotorcraft architectures and propulsion systems. The design of Hybrid-Electric Propulsion Systems (HEPSs) for rotorcraft is seen as being able to contribute to those goals. This work aims to conduct a comprehensive design and trade-off analysis of hybrid powerplants for rotorcraft, targeting enhanced payload-range capability and fuel economy. An integrated methodology for the design, performance assessment and optimal implementation of HEPSs for conceptual rotorcraft has been developed. A multi-disciplinary approach is devised comprising models for rotor aerodynamics, flight dynamics, HEPS performance and weight estimation. All models are validated using experimental or flight test data. The methodology is deployed for the assessment of a hybrid-electric tilt-rotor, modelled after the NASA XV-15. This work targets to provide new insight in the preliminary design and sizing of optimally designed HEPSs for novel tilt-rotor aircraft. The paper demonstrates that at present, current battery energy densities (250Wh/kg) severely limit the degree of hybridization if a fixed useful payload and range are to be achieved. However, it is also shown that if advancements in battery energy density to 500Wh/kg are realized, a significant increase in the level of hybridization and hence reduction of fuel burned and carbon output relative to the conventional configuration can be attained. The methodology presented is flexible enough to be applied to alternative rotorcraft configurations and propulsion systems.en_UK
dc.identifier.citationSaias CA, Goulos I, Roumeliotis I, et al., (2021) Preliminary design of hybrid-electric propulsion systems for emerging urban air Mobility rotorcraft architecture. Journal of Engineering for Gas Turbines and Power, Volume 143, Issue 11, November 2021, Paper number GTP-21-1162en_UK
dc.identifier.issn0742-4795
dc.identifier.urihttps://doi.org/10.1115/1.4052057
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/17013
dc.language.isoenen_UK
dc.publisherAmerican Society of Mechanical Engineersen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectUrban Air Mobility (UAM)en_UK
dc.subjecttilt-rotoren_UK
dc.subjectHybrid-Electric Propulsion System (HEPS)en_UK
dc.subjectoptimizationen_UK
dc.subjectenergy managementen_UK
dc.subjectpreliminary designen_UK
dc.titlePreliminary design of hybrid-electric propulsion systems for emerging urban air Mobility rotorcraft architectureen_UK
dc.typeArticleen_UK

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