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Barrett, R. (author), McMurtry, R. (author), Vos, R. (author), Tiso, P. (author), De Breuker, R. (author)This paper describes a new class of flight control actuators using Post-Buckled Precompressed (PBP) piezoelectric elements. These actuators are designed to produce significantly higher deflection and force levels than conventional piezoelectric actuator elements. Classical laminate plate theory (CLPT) models are shown to work very well in...conference paper 2005
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Barrett, R. (author), Vos, R. (author), De Breuker, R. (author)This paper describes a new class of flight control actuators using Post-Buckled Precompressed (PBP) piezoelectric elements to provide much improved actuator performance. These PBP actuator elements are modeled using basic large deflection Euler-beam estimations accounting for laminated plate effects. The deflection estimations are then coupled...conference paper 2007
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De Breuker, R. (author), Abdalla, M. (author), Gürdal, Z. (author), Lindner, D. (author)Aircraft are often confronted with distinct circumstances during different parts of their mission. Ideally the aircraft should fly optimally in terms of aerodynamic performance and other criteria in each one of these mission requirements. This requires in principle as many different aircraft configurations as there are flight conditions, so...conference paper 2007
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Donnell, K.O. (author), Schober, S. (author), Stolk, M. (author), Marzocca, P. (author), De Breuker, R. (author), Abdalla, M. (author), Nicolini, E. (author), Gürdal, Z. (author)This paper discusses modeling, simulations and experimental aspects of active aeroelastic control on aircraft wings by using Synthetic Jet Actuators (SJAs). SJAs, a particular class of zero-net mass-flux actuators, have shown very promising results in numerous aeronautical applications, such as boundary layer control and delay of flow separation...conference paper 2007
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Keidel, D.H.K. (author), Sodja, J. (author), Werter, N.P.M. (author), De Breuker, R. (author), Ermanni, P. (author)Driven by the need to improve the performance and energy-efficiency of aircraft, current research in the field of morphing wings is growing in significance. The most recently developed concepts typically adjust only one characteristic of the wing. Within this paper a new concept for morphing wings is developed and tested, enabling large changes...conference paper 2015
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Werter, N.P.M. (author), Sodja, J. (author), De Breuker, R. (author)The design methodology and testing of an aeroelastically tailored wing subjected to manoeuvre loads is presented in this paper. The wing is designed using an aeroelastic analysis tool that is composed of a closely coupled nonlinear beam model and a vortex lattice aerodynamic model. The globally convergent method of moving asymptotes is used to...conference paper 2015
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Werter, N.P.M. (author), De Breuker, R. (author)Driven by a need to improve the efficiency of aircraft and reduce the fuel consumption, composite materials are applied extensively in the design of aircraft. A dynamic aeroelastic framework for the conceptual design of a generic composite wing structure is presented. The wing is discretized in several spanwise sections, where each section has a...conference paper 2015
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Werter, N.P.M. (author), De Breuker, R. (author), Abdalla, M.M. (author)Over the years, wings have become lighter and more flexible, making them more prone to aeroelastic effects. Thus, aeroelasticity in design becomes more important. In order to determine the response of an aircraft to, for example, a gust, an unsteady aerodynamic model is required to determine the dynamic loads. The three most-commonly used...conference paper 2015
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Gillebaart, E. (author), De Breuker, R. (author)Low-fidelity isogeometric aeroelastic analysis has not received much attention since the introduction of the isogeometric analysis (IGA) concept, while the combination of IGA and the boundary element method in the form of the potential flow theory shows great potential. This paper presents a two-dimensional low-fidelity aeroelastic optimization...conference paper 2015
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Lancelot, P.M.G.J. (author), Sodja, J. (author), Werter, N.P.M. (author), De Breuker, R. (author)This paper summarises the design of a gust generator and the comparison between high fidelity numerical results and experimental results. The gust generator has been designed for a low subsonic wind tunnel in order to perform gust response experiments on wings and assess load alleviation. Special attention has been given to the different design...conference paper 2015
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Bernhammer, L.O. (author), Navalkar, S.T. (author), Sodja, J. (author), De Breuker, R. (author), Karpel, M. (author)This paper presents the experimental and numerical study of an autonomous load alleviation concept using trailing edge flaps. The flaps are autonomous units, which for instance can be used for gust load alleviation. The unit is self-powered and self-actuated through trailing edge tabs which are mounted as aerodynamic control devices on free...conference paper 2015
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- Falken, A (author), Steeger, S (author), Heintze, O (author), De Breuker, R. (author) conference paper 2016
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Bordogna, M.T. (author), Macquart, T.B.M.J. (author), Bettebghor, D. (author), De Breuker, R. (author)Optimizing the laminates of large composite structures is nowadays well-recognized as having significant benefits in the design of lightweight structural solutions. However, designs based on locally optimized laminates are prone to structural discontinuities and enforcing blending during the optimization is therefore crucial in order to achieve...conference paper 2016
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Lancelot, P.M.G.J. (author), De Breuker, R. (author)This paper presents the results from the equivalent static load method applied to gust response optimisation of an aircraft wing. Through the different optimisation runs, it is assessed that gust load cases can be critical and are difficult to constrain with the sole use of static load cases. Several cases are evaluated with different gust...conference paper 2016
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Lancelot, P.M.G.J. (author), De Breuker, R. (author)This paper summarises a conceptual study regarding a passively actuated spoiler for gust load alleviation. The design of such system is intended to limit the use of computers, sensors and actuators to operate the device. The study mainly relies on using Theodorsen’s unsteady flow theory for a typical airfoil section. To cope with the limitations...conference paper 2016
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Kruger, W.R. (author), Dillinger, J. (author), De Breuker, R. (author), Reyes, M. (author), Haydn, K. (author)In the work package “Adaptive Wing” in the Clean-Sky “Smart Fixed Wing Aircraft” (SFWA) project, design processes and solutions for aircraft wings have been created, giving optimal response with respect to loads, comfort and performance by the introduction of passive and active concepts. Central activity of the work was the design and...conference paper 2016
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Ferreira, J.P. (author), De Breuker, R. (author)This study describes the development of a morphing wing concept for a Portuguese Air Force Unmanned Air Vehicle (UAV), the UAS-30. Nowadays, optimized fuel efficiency is a primary requirement in the aerospace industry, and it can be significantly improved by designing adaptive wings which can change their shape in flight to achieve better...conference paper 2016
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Radestock, M. (author), Riemenschneider, J. (author), Monner, H.P. (author), Huxdorf, O. (author), Werter, N.P.M. (author), De Breuker, R. (author)In a wind tunnel experiment a morphing wing with span extension and camber morphing was investigated. The considered aircraft is an unmanned aerial vehicle (UAV) with a span of 4 m. During the investigations a half wing model was analysed with pressure and structural measurement. The half wing model has three different morphing mechanisms. The...conference paper 2016
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Rajpal, D. (author), De Breuker, R. (author)Including a gust analysis in an optimization framework is computationally inefficient as the critical load cases are not known a priori and hence a large number of points within the flight envelope have to be analyzed. Model order reduction techniques can provide significant improvement in computational efficiency of an aeroelastic analysis. In...conference paper 2017
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Bordogna, M.T. (author), Bettebghor, Dimitri (author), Blondeau, Christophe (author), De Breuker, R. (author)The main objective of this paper is to propose an aeroelastic optimization approach capable of performing structural sizing optimization considering structural and aerodynamic constraints. The proposed approach uses a detailed FE model of a composite wing with shell elements in order to obtain realistic weight estimation and structural...conference paper 2017