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High-Fidelity Aerodynamic Analysis and Optimization of the SUSAN Electrofan ConceptThe Subsonic Single Aft Engine (SUSAN) Electrofan is a new single-aisle regional jet class transport aircraft being studied by NASA, which benefits from reduced fuel consumption through a reduction in the number of hydrocarbon fuel-burning engines from two to one. This is achieved through a hybrid-electric system architecture, where a series of generators are used to extract power from a fuel-consuming tail cone thruster to drive electric propulsors mounted on the wings. To support the development of these propulsion systems, which involve high levels of propulsion-airframe integration, this paper presents high-fidelity analyses through computational fluid dynamics (CFD) simulations provided by the Launch Ascent and Vehicle Aerodynamics (LAVA) framework, which also includes capabilities for modeling the effect of active propulsors. A trade space exploration is performed to investigate the advantages of several wing mounted distributed electric propulsion system configurations, including over-wing, under-wing, and trailing-edge arrangements. For the aft fuselage propulsor, focus is on the sizing of the inlet, core, and bypass ducts. High-fidelity aerodynamic shape optimization is also used to help minimize the inlet distortion intensity experienced by the aft propulsor fan through a reshaping of the fuselage.
Document ID
20210025462
Document Type
Conference Paper
Authors
Leonardo Machado (Science and Technology Corporation (United States) Hampton, Virginia, United States)
Timothy Chau (Science and Technology Corporation (United States) Hampton, Virginia, United States)
Gaetan Kenway (Science and Technology Corporation (United States) Hampton, Virginia, United States)
Jared C Duensing (Ames Research Center Mountain View, California, United States)
Cetin C Kiris (Ames Research Center Mountain View, California, United States)
Date Acquired
December 3, 2021
Subject Category
Aerodynamics
Meeting Information
AIAA SciTech Forum and Exposition 2022(San Diego, CA)
Funding Number(s)
WBS: 533127.02.22.01.05
Distribution Limits
Public
Copyright
Public Use Permitted.
Technical Review
NASA Peer Committee
Keywords
CAS

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NameType LeonardoMachado_SciTech22_Manuscript.pdf STI