@inproceedings{96ba5e71d964467db2278058835fd70c,
title = "Conceptual Design of Distributed Electrified Boundary Layer Ingesting Propulsors for the CHEETA Aircraft Concept",
abstract = "This paper describes the conceptual design of a boundary layer ingesting, distributed electric propulsor system for civil aircraft, supported through NASA{\textquoteright}s CHEETA (Center for High-Efficiency Electrical Technologies for Aircraft) program. Cryogenic hydrogen fuel cellpowered superconducting electric motors power the boundary layer ingesting ducted fans to achieve high propulsive efficiency. Sizing of the integrated propulsor system is carried out using a Geometric Programming (GP) optimization framework to capture the effects of system integration on component design. A 16-propulsor configuration is presented which can meet the requirements of the CHEETA aircraft using motors similar to a previously reported 2.5MW reference design. Analysis of configurations with different numbers of propulsors shows that the aero-propulsive benefit of distributed propulsion is limited by the thermal management requirements and constraints on the geometry of the superconducting machine which do not scale linearly with shaft power. The resulting fan and motor designs are different than if each were designed independently, illustrating the importance of simultaneous optimization in the design of novel electric propulsors.",
author = "Durgesh Chandel and Reband, {John D.} and Hall, {David K.} and Thanatheepan Balachandran and Jianqiao Xiao and Haran, {Kiruba S.} and Greitzer, {Edward M.}",
note = "Funding Information: This research is funded by NASA{\textquoteright}s University Leadership Initiative (ULI) award on Center for High-Efficiency Electrical Technologies for Aircraft (CHEETA) under grant number 80NSSC19M0125. The authors would also like to acknowledge CHEETA program director, Prof. Phillip Ansell at UIUC, and Dr. Wolfgang Stautner at GE Global Research Center, for their valuable insight and guidance during this research. We also thank Mr. Elias Waddington at UIUC for his inputs on vehicle level design parameters. Funding Information: This research is funded by NASA?s University Leadership Initiative (ULI) award on Center for High-Efficiency Electrical Technologies for Aircraft (CHEETA) under grant number 80NSSC19M0125. The authors would also like to acknowledge CHEETA program director, Prof. Phillip Ansell at UIUC, and Dr. Wolfgang Stautner at GE Global Research Center, for their valuable insight and guidance during this research. We also thank Mr. Elias Waddington at UIUC for his inputs on vehicle level design parameters. Publisher Copyright: {\textcopyright} 2021, American Institute of Aeronautics and Astronautics Inc.. All rights reserved.; AIAA Propulsion and Energy Forum, 2021 ; Conference date: 09-08-2021 Through 11-08-2021",
year = "2021",
doi = "10.2514/6.2021-3287",
language = "English (US)",
isbn = "9781624106118",
series = "AIAA Propulsion and Energy Forum, 2021",
publisher = "American Institute of Aeronautics and Astronautics Inc, AIAA",
booktitle = "AIAA Propulsion and Energy Forum, 2021",
}