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Morphing Turbofan Engine Inlet at Take-off Cross-wind Conditions

Abate, Giada and Vasista, Srinivas and Künnecke, Sven Christian and Riemenschneider, Johannes (2023) Morphing Turbofan Engine Inlet at Take-off Cross-wind Conditions. In: 16th Annual ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2023. SMASIS 2023, 2023-09-11 - 2023-09-13, Austin, Texas USA. doi: 10.1115/SMASIS2023-110999. ISBN 978-079188752-3.

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Aeronautical engine inlets are designed as a compromise between low-drag configurations for cruise condition and high airflow incidence angle during take-off and landing. In order to fulfill all the requirements belonging to different operating points, adaptive or morphing structures could be a feasible solution, and they could potentially have a positive impact in terms of aerodynamic performance, therefore leading to a substantial reduction in fuel consumption. However, designing morphing inlets is challenging because of the coupling between aerodynamics and structural analysis which is crucial in order to consider both the feasibility of the adaptive structure and its effects on the aerodynamics of the nacelle. This paper outlines the structural design of an adaptive inlet which features hybrid elastomeric composite materials and a means of active actuation. Since the inlet geometry features both radial and circumferential axes, any change in one axis creates a change in the other resulting in the need of stretchable materials if unwanted steps and gaps are to be prevented for favorable laminar-turbulent transition. To evaluate the aerodynamic effects of such a morphing inlet, a computational fluid-dynamic analysis is coupled with the finite element analysis leading to a “one-way” fluid-structure interaction approach. The goal of the presented method is the definition of an automatic aero-structure coupling framework in order to ease the exploration of a variety of designs over the feasible design space. Results highlight pros and cons of three different design approaches with a particular focus on promising aerodynamic results despite some difficulties in the structural feasibility

Item URL in elib:https://elib.dlr.de/198487/
Document Type:Conference or Workshop Item (Speech)
Title:Morphing Turbofan Engine Inlet at Take-off Cross-wind Conditions
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Abate, GiadaUNSPECIFIEDhttps://orcid.org/0000-0002-4320-4447UNSPECIFIED
Vasista, SrinivasUNSPECIFIEDhttps://orcid.org/0000-0002-7917-6740UNSPECIFIED
Künnecke, Sven ChristianUNSPECIFIEDhttps://orcid.org/0000-0002-7139-3492UNSPECIFIED
Riemenschneider, JohannesUNSPECIFIEDhttps://orcid.org/0000-0001-5485-8326UNSPECIFIED
Date:September 2023
Journal or Publication Title:16th Annual ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2023
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Turbofan inlet, Nacelle, Morphing
Event Title:SMASIS 2023
Event Location:Austin, Texas USA
Event Type:international Conference
Event Start Date:11 September 2023
Event End Date:13 September 2023
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:Institut für Systemleichtbau > Adaptronics
Institut für Systemleichtbau > Innovation
Deposited By: Abate, Giada
Deposited On:01 Nov 2023 08:44
Last Modified:24 Apr 2024 20:58

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