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Numerical Investigations of a Wing Leading Edge Comprising Fluid Actuated Morphing Unit Structures (FAMoUS)

Sahin, Melin and Vasista, Srinivas and Riemenschneider, Johannes (2019) Numerical Investigations of a Wing Leading Edge Comprising Fluid Actuated Morphing Unit Structures (FAMoUS). SMASIS 2019, 9-11 September 2019, Louisville KY United States.

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Official URL: https://event.asme.org/SMASIS/Program/#/SMASIS2019/sessions/16


A large-displacement morphing leading edge "droop nose" device has the potential to enable very high lift coefficients with low airframe noise as has been shown in previous works. A new integrated actuation principle via fluid-actuated morphing unit structures (FAMoUS), demonstrated in previous works, can be implemented in the leading edge instead of conventional linear/rotary actuators and mechanical linkages to enact shape change and to carry load. The advantages of the FAMoUS concept lies in its simplicity of operation and compactness of the skin, substructure, and actuation integrated package. The FAMoUS concept is based on elastomeric chambers that are reinforced with stiffening elements that can generate force and displacement along a specified axis when pressurized with a fluid. This paper investigates the usage of the FAMoUS concept in the leading edge application through numerical finite element analyses. Positive and negative (i.e. vacuum) pressure is considered in different FAMoUS elements along the wing leading edge profile to enable corresponding curvature changes. A parametric study considering different pressure values and thicknesses will provide details about the sensitivities of these parameters in matching a target profile under aerodynamic loads. Different concepts are considered in which the position of the neutral axis in combination with the appropriate direction of pressure (i.e. positive or vacuum) are investigated. Initial simulations of a wing leading edge with chord length 200 mm have been run using nonlinear hyperelastic material models. The results for the aforementioned different concepts show that the leading edge is able to undergo curvature change and the planned parametric studies will be performed via this established tool framework.

Item URL in elib:https://elib.dlr.de/129513/
Document Type:Conference or Workshop Item (Lecture)
Title:Numerical Investigations of a Wing Leading Edge Comprising Fluid Actuated Morphing Unit Structures (FAMoUS)
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Vasista, SrinivasUNSPECIFIEDhttps://orcid.org/0000-0002-7917-6740UNSPECIFIED
Riemenschneider, JohannesUNSPECIFIEDhttps://orcid.org/0000-0001-5485-8326UNSPECIFIED
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:morphing wing; fluidic actuation; droop nose
Event Title:SMASIS 2019
Event Location:Louisville KY United States
Event Type:international Conference
Event Dates:9-11 September 2019
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Vasista, Srinivas
Deposited On:11 Nov 2019 07:36
Last Modified:11 Nov 2019 07:36

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