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Tsatsas, I. (author), Georgopoulos, P. (author), Sodja, J. (author), De Breuker, R. (author)This paper presents an experimental investigation into the aeroelastic behavior of an innovative wind turbine design featuring a downwind two-blade rotor with a teetering hub mounted on a tower with adjustable tilt. The rotor model incorporates two sets of elastic blades—stiff and flexible—for scaling purposes, each instrumented with strain...conference paper 2024
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Carrillo Córcoles, X. (author), De Breuker, R. (author), Sodja, J. (author)This study explores the implementation of aeroelastic tailoring in the design of a regional aircraft featuring a strut-braced wing (SBW). Making use of the aeroelastic optimisation framework from Delft University of Technology, PROTEUS, the research addresses two distinct cases. The first case involves a simplified SBW geometry to validate the...conference paper 2024
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Maathuis, H.F. (author), De Breuker, R. (author), Castro, Saullo G.P. (author)Design optimisation potentially leads to lightweight aircraft structures with lower environmental impact. Due to the high number of design variables and constraints, these problems are ordinarily solved using gradient-based optimisation methods, leading to a local solution in the design space while the global space is neglected. Bayesian...conference paper 2024
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Mkhoyan, T. (author), Wang, Xuerui (author), De Breuker, R. (author)This research takes a further step towards the development of an autonomous aeroservoelastic wing concept with distributed flaps. The wing demonstrator, developed within the TU Delft SmartX project, aims to demonstrate in-flight performance optimization and multi-objective control using an over-actuated wing design. To address the challenges...conference paper 2024
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Carrillo Córcoles, X. (author), De Breuker, R. (author), Sodja, J. (author)Previous numerical and experimental studies have shown the load alleviation capabilities of the flared folding wingtip. However, they have also shown the complex dynamics of the system and the limitations in the results obtained by modeling such an aeroelastic system using linear models, which cannot capture the effects of the large wingtip...conference paper 2023
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Rahman, H. (author), De Breuker, R. (author), Castro, Saullo G.P. (author)In this paper, an innovative design methodology is proposed to simultaneously optimize the size, layout, and number of stiffeners of a stiffened panel using a gradient-based optimizer. In the proposed method, CAD-based parameterization is used to parameterize the layout of the stiffeners. The location and orientation of each stiffener are...conference paper 2023
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Georgopoulos, P. (author), Sodja, J. (author), De Breuker, R. (author)In this paper, an innovative design methodology is proposed to simultaneously optimize the size, layout, and number of stiffeners of a stiffened panel using a gradient-based optimizer. In the proposed method, CAD-based parameterization is used to parameterize the layout of the stiffeners. The location and orientation of each stiffener are...conference paper 2023
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Jurisson, A. (author), Eussen, Bart (author), de Visser, C.C. (author), De Breuker, R. (author)This paper proposes an extension to the traditional flight path reconstruction filter to simultaneously reconstruct the aircraft rigid body states together with modal amplitudes and velocities of the structure. To achieve this, the filter makes use of additional accelerometers, gyroscopes and strain gauges placed across the aircraft structure....conference paper 2023
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Vasudevan, S. (author), De Breuker, R. (author), Wang, Xuerui (author)This paper aims to explore the advantages offered by machine learning (ML) for dimensionality reduction of nonlinear transonic aerodynamics. Three ML techniques are evaluated in terms of their ability to generate interpretable low-dimensional manifolds of the transient pressure distributions over a NACA4412 airfoil equipped with a flap. These ML...conference paper 2023
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Carrillo Córcoles, X. (author), Sodja, J. (author), De Breuker, R. (author)The ram air inlets flaps are used in some aircraft to modulate the amount of ram<br/>air cooling the Environmental Control System. The current flap design features two metallic plates connected with a hinge. The present work studies an alternative design that replaces the metallic plates with a single composite laminate with morphing...conference paper 2023
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Sodja, J. (author), De Breuker, R. (author)The paper proposes a methodology for increased-fidelity aeroelastic testing in a wind tunnel environment to improve the correlation between the aeroelastic response measured in a wind tunnel experiment and the aeroelastic response observed on an aircraft in flight. The focus of the current study is to assess the potential of the proposed...conference paper 2022
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Jurisson, A. (author), De Breuker, R. (author), de Visser, C.C. (author), Eussen, Bart (author), Timmermans, H (author)Netherlands Aerospace Centre (NLR) and Delft University of Technology (TUD) have obtained an unmanned aerial vehicle to serve as a test platform for future aeroservoelastic flight testing. The purpose of this testbed is to collect data about flexible aircraft flight dynamic responses and loads on the aircraft at unsteady airflow conditions for...conference paper 2022
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Chang, J. (author), De Breuker, R. (author), Wang, Xuerui (author)Incremental control, including incremental nonlinear dynamic inversion (INDI) and incremental backstepping (IBS), is a sensor-based control framework that enhances the control robustness by exploiting sensor measurements. Although its effectiveness has been demonstrated on various aerospace systems, the explicit and quantifiable expression for...conference paper 2022
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Mkhoyan, T. (author), Wang, Xuerui (author), De Breuker, R. (author)This study investigated the design and development of an autonomous aeroservoelastic wing concept with distributed flaps. This wing demonstrator was developed in the scope of the SmartX project, aiming to demonstrate in-flight performance optimization and multi-objective control with over-actuated wing designs. Following a successful test...conference paper 2022
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Zahoor, Y. (author), Sodja, J. (author), De Breuker, R. (author)This paper presents an overview of the design and validation of a novel passive camber morphing system for rotorcraft. The passive system works for a variable speed rotor where a potential increase in pilot control authority and power reduction is possible. In the proposed concept, the rotor speed is varied by 10% to change the apparent...conference paper 2022
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Schuurman, M.J. (author), De Breuker, R. (author), Kassapoglou, C. (author)On the 15t hof December 1965 the motion picture “Flight of the Phoenix” was released in the United States of America theatres. In the closing movie credits the following text is shown:It should be remembered. . . that Paul Mantz, a fine man and a brilliant flyer gave his life in the making of this film. Who was Paul Mantz? What happened? And...conference paper 2022
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Carrillo Córcoles, X. (author), Mertens, C. (author), Sciacchitano, A. (author), van Oudheusden, B.W. (author), De Breuker, R. (author), Sodja, J. (author)An aeroelastic wind tunnel experiment to identify the influence of the wing stiffness and hinge release threshold on the gust load alleviation performance of a folding wingtip design is presented in this study. Five models with different stiffness and tailoring properties are tested and the wing root bending moment at different conditions is...conference paper 2022
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Ruland, O.L. (author), Mkhoyan, T. (author), De Breuker, R. (author), Wang, Xuerui (author)Morphing is a promising bio-inspired technology, with the potential to make aircraft more economical and sustainable through adaptation of the wing shape for best efficiency at any flight condition. This paper proposes an online black-box performance optimization strategy for a seamless wing with distributed morphing control. Pursuing global...conference paper 2022
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Schildkamp, R.R.M. (author), Wang, Xuerui (author), Chang, J. (author), De Breuker, R. (author), Sodja, J. (author)This paper presents the development and initial characterization of an active, para- metric wing section with aileron and spoiler control surfaces. This wing section is intended to replace the currently used passive wing section setup and facilitate research in active con- trol techniques of aeroelastic phenomena such as flutter, gust load...conference paper 2022
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Schildkamp, R.R.M. (author), Chang, J. (author), Sodja, J. (author), De Breuker, R. (author), Wang, Xuerui (author)This paper proposes an incremental nonlinear control method for aeroelastic sys- tem gust load alleviation and active flutter suppression. These two control objectives can be achieved without modifying the control architecture or the control parameters. The proposed method has guaranteed stability in the Lyapunov sense and also has robustness...conference paper 2022