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Integration of Wing-Mounted Over-Wing Engines on a Mid-Range Aircraft

Wegener, Patrick and Lange-Schmuckall, Fabian (2022) Integration of Wing-Mounted Over-Wing Engines on a Mid-Range Aircraft. In: AIAA SciTech 2022 Forum, pp. 1-19. American Institute of Aeronautics and Astronautics Inc, AIAA. AIAA SCITECH 2022 Forum, 03.-07.01.2022, San Diego, USA. doi: 10.2514/6.2022-2563. ISBN 978-162410631-6.

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Official URL: https://dx.doi.org/10.2514/6.2022-2563


Ultra-High Bypass Ratio (UHBR) engines are an important technology for improving the efficiency of future aircraft. However, their large diameter poses a major challenge for their use in conventional under-wing mounted engine configurations due to limited space. A configuration with engines mounted above the wing is not subject to these limitations and therefore offers the potential for improvements in overall aircraft efficiency and performance. Another advantage of this configuration is the acoustic shielding effect of the fan noise toward the ground by the wing. Configurations with this type of engine layout were investigated as part of the German LuFo V project AVACON (AdVanced Aircraft CONcepts). This paper describes the investigated variant of engine integration via a vertical pylon between nacelle lower side and main spar of the wing. To investigate the complex aerodynamic interactions between the engine and the wing, RANS CFD simulations were performed using the DLR code TAU. By optimizing twist and upper surface shape, the wing geometry was adapted to the flow conditions resulting from the engine integration to reduce detrimental aerodynamic installation effects. In general, the influence of the geometric shape of the wing and engine as well as their relative geometric position on the overall drag is more pronounced in such a configuration than in a under-wing engine design. The use of advanced optimization methods is therefore crucial for a successful design.

Item URL in elib:https://elib.dlr.de/188989/
Document Type:Conference or Workshop Item (Speech)
Title:Integration of Wing-Mounted Over-Wing Engines on a Mid-Range Aircraft
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Lange-Schmuckall, FabianUNSPECIFIEDhttps://orcid.org/0000-0001-5854-2345UNSPECIFIED
Date:3 January 2022
Journal or Publication Title:AIAA SciTech 2022 Forum
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-19
Publisher:American Institute of Aeronautics and Astronautics Inc, AIAA
Series Name:Conference Proceedings
Keywords:Aerodynamics; Aviation; Bypass ratio; Computational fluid dynamics; Efficiency; Integration; Machine design; Wings
Event Title:AIAA SCITECH 2022 Forum
Event Location:San Diego, USA
Event Type:international Conference
Event Dates:03.-07.01.2022
Organizer:American Institute of Aeronautics and Astronautics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Clean Propulsion
DLR - Research area:Aeronautics
DLR - Program:L CP - Clean Propulsion
DLR - Research theme (Project):L - Future Engines and Engine Integration
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Wegener, Patrick
Deposited On:02 Nov 2022 12:05
Last Modified:31 Mar 2023 13:35

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