Print Email Facebook Twitter Preliminary Sizing of a Hybrid-Electric Passenger Aircraft Featuring Over-the-Wing Distributed-Propulsion Title Preliminary Sizing of a Hybrid-Electric Passenger Aircraft Featuring Over-the-Wing Distributed-Propulsion Author de Vries, R. (TU Delft Flight Performance and Propulsion) Hoogreef, M.F.M. (TU Delft Flight Performance and Propulsion) Vos, Roelof (TU Delft Flight Performance and Propulsion) Date 2019 Abstract This study compares a hybrid-electric aircraft featuring a propulsive empennage and over-the- wing, distributed-propulsion to a conventional regional turboprop. The impact of multiple design parameters, mission requirements, and technology assumptions on maximum take-off mass and payload-range energy efficiency is evaluated, in order to illustrate the sensitivities of the design. A preliminary sizing method that incorporates aero-propulsive interaction effects is used to obtain rapid estimations. Results show that, for the baseline mission, the hybrid electric variant is 2.5% heavier and consumes 2.5% more energy than the reference aircraft. In this process, several key design guidelines and challenges for distributed-propulsion aircraft are identified. Firstly, when comparing a hybrid-electric configuration to a conventional one, each aircraft must be sized at its optimum cruise altitude for the same payload and range requirements. Secondly, the hypothetical advantages of distributed propulsion described in literature do not easily lead to a benefit at aircraft level, if the aero-propulsive interaction effects and associated dependencies are incorporated in the design process. Thirdly, the power-control parameters affect practically all characteristics of the aircraft, and the optimal control strategy is highly dependent on the aero-propulsive interaction. The results suggest that the proposed configuration can constitute a low-noise alternative for the regional transport market if the performance of the over-the-wing distributed-propulsion system is optimized. To reference this document use: http://resolver.tudelft.nl/uuid:6aea8045-68f6-49d0-9213-0323cca92213 DOI https://doi.org/10.2514/6.2019-1811 Embargo date 2021-12-08 ISBN 978-1-62410-578-4 Source AIAA Scitech 2019 Forum: 7-11 January 2019, San Diego, California, USA Event AIAA Scitech Forum, 2019, 2019-01-07 → 2019-01-11, San Diego, United States Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type conference paper Rights © 2019 R. de Vries, M.F.M. Hoogreef, Roelof Vos Files PDF 6.2019_1811.pdf 2.02 MB Close viewer /islandora/object/uuid:6aea8045-68f6-49d0-9213-0323cca92213/datastream/OBJ/view