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Concept of a morphing shock control bump spoiler with two actuators

Künnecke, Sven Christian and Schäfer, Michael and Goerttler, Andreas and Waldmann, Andreas and Vasista, Srinivas and Riemenschneider, Johannes (2023) Concept of a morphing shock control bump spoiler with two actuators. 10th ECCOMAS Thematic Conference on Smart Structures and Materials, 2023-07-03 - 2023-07-05, Patras, Griechenland. doi: 10.7712/150123.9786.441212.

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Official URL: https://www.eccomasproceedia.org/conferences/thematic-conferences/smart-2023/9786


The overall goal of reducing greenhouse gas emissions in commercial aviation can be approached in many ways. One of them is the reduction in fuel consumption by reducing aerodynamic drag. Morphing can be used to adapt the shape of surfaces to gain aerodynamic benefits such as drag reduction under specific flight conditions. Among other things, drag reduction can be achieved by transonic shock control. In this work, the concept of a morphing spoiler which can form a shock control bump is investigated. This bump is shape adaptive and can shift its crest to different locations on the spoiler as well as retract the bump entirely. While the upstream bump crest position is optimized for drag reduction, and thus performance increase, the downstream position is optimized for delaying the buffet onset. This positionvariable functionality is realized by using a second actuator in addition to the main spoiler actuator. A structural finite element optimization considering aerodynamic loads in form of pressure distributions is performed. The load cases cruise, with and without deployed bumps as well as the airbrake configuration are investigated. The structural concept of the spoiler is described as well as its optimization process that is based on the Nelder-Mead method. For this purpose, the finite element software ANSYS is coupled to MATLAB in which the optimization is controlled. In the end, it is shown that a morphing spoiler with two actuators can form a position variable shock control bump under realistic aerodynamic loads.

Item URL in elib:https://elib.dlr.de/196950/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Die Proceedings werden in Scopus gelistet werden.
Title:Concept of a morphing shock control bump spoiler with two actuators
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Künnecke, Sven ChristianUNSPECIFIEDhttps://orcid.org/0000-0002-7139-3492UNSPECIFIED
Goerttler, AndreasUNSPECIFIEDhttps://orcid.org/0000-0002-8315-1298UNSPECIFIED
Waldmann, AndreasUNSPECIFIEDhttps://orcid.org/0000-0002-0226-6705UNSPECIFIED
Vasista, SrinivasUNSPECIFIEDhttps://orcid.org/0000-0002-7917-6740UNSPECIFIED
Riemenschneider, JohannesUNSPECIFIEDhttps://orcid.org/0000-0001-5485-8326UNSPECIFIED
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 291-302
EditorsEmailEditor's ORCID iDORCID Put Code
Saravanos, Dimitris A.University of Patras, GreeceUNSPECIFIEDUNSPECIFIED
Chrysochoidis, Nikos A.University of Patras, GreeceUNSPECIFIEDUNSPECIFIED
Theodosiou, Theodosis C.University of Thessaly, GreeceUNSPECIFIEDUNSPECIFIED
Keywords:Shock Control Bump, Adaptive Aircraft Structures, Wave Drag Reduction, Buffet Onset Delay, Variable Contour Bumps, Morphing Spoiler
Event Title:10th ECCOMAS Thematic Conference on Smart Structures and Materials
Event Location:Patras, Griechenland
Event Type:international Conference
Event Start Date:3 July 2023
Event End Date:5 July 2023
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - Structural Materials and Design, L - Aircraft Technologies and Integration
Location: Braunschweig
Institutes and Institutions:Institut für Systemleichtbau > Adaptronics
Institute of Flight Systems > Safety Critical Systems&Systems Engineering
Institute for Aerodynamics and Flow Technology > High Speed Configurations, GO
Institut für Systemleichtbau > Innovation
Deposited By: Künnecke, Sven Christian
Deposited On:04 Sep 2023 08:02
Last Modified:24 Apr 2024 20:57

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