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Global aero-structural design optimization of composite wings with active manoeuvre load alleviation

Wunderlich, Tobias and Dähne, Sascha and Reimer, Lars and Schuster, Andreas (2022) Global aero-structural design optimization of composite wings with active manoeuvre load alleviation. CEAS Aeronautical Journal. Springer. doi: 10.1007/s13272-022-00585-3. ISSN 1869-5590.

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Official URL: https://link.springer.com/article/10.1007/s13272-022-00585-3


In the scope of the DLR project VicToria (Virtual Aircraft Technology Integration Platform), an integrated process for aero-structural wing optimization based on high fidelity simulation methods is continuously developed and applied. Based upon a parametric geometry, flight performance under transonic flight conditions and manoeuvre loads are computed by solving the Reynolds-averaged Navier-Stokes equations. Structural mass and elastic characteristics of the wing are determined from structural sizing of the composite wing box for essential manoeuvre load cases using computational structural mechanics. Static aeroelastic effects are considered in all flight conditions and active manoeuvre load alleviation is integrated in the process. Global aero-structural wing optimizations are successfully performed for wings with and without active manoeuvre load alleviation. The active manoeuvre load alleviation is introduced with a simplified modelling of control surface deflections using a mesh deformation technique. The minimization of the fuel consumption for three typical flight missions represents the objective function. Wing optimizations are performed for variable and constant wing planform parameters as well as for wings with conventional composite wing box structure and for more flexible wings. The latter is accomplished by introducing modifications of the structural concept and the strain allowable. A significant mass reduction of the optimized wing box is obtained for wings with active manoeuvre load alleviation, resulting in a drop in fuel consumption of about 3%. For wing optimizations with the more flexible wing concept, the active manoeuvre load alleviation shows an additional reduction of the fuel consumption in the order of 2%. The wings with active manoeuvre load alleviation results in optimized wing geometries with increased aspect ratio and reduced taper ratio.

Item URL in elib:https://elib.dlr.de/186611/
Document Type:Article
Title:Global aero-structural design optimization of composite wings with active manoeuvre load alleviation
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Wunderlich, TobiasUNSPECIFIEDhttps://orcid.org/0000-0001-8829-7600UNSPECIFIED
Dähne, SaschaUNSPECIFIEDhttps://orcid.org/0000-0003-3497-3225UNSPECIFIED
Date:25 May 2022
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Multi-disciplinary design optimization (MDO) Aero-structural design optimization Wing optimization Wing design Active manoeuvre load alleviation Highly flexible wing Composite wing
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Aircraft Technologies and Integration
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Transport Aircraft
Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Institute for Aerodynamics and Flow Technology > CASE, BS
Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Wunderlich, Dr.-Ing. Tobias
Deposited On:30 May 2022 07:33
Last Modified:30 May 2022 07:33

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