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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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Mkhoyan, T. (author), Thakrar, N.R. (author), De Breuker, R. (author), Sodja, J. (author)In this study, the design and development of an autonomous morphing wing concept were investigated. The morphing wing was developed in the scope of the Smart-X project, aiming to demonstrate in-flight performance optimisation. This study proposed a novel distributed morphing concept, with six Translation Induced Camber (TRIC) morphing trailing...conference paper 2021
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Wang, Xuerui (author), Mkhoyan, T. (author), De Breuker, R. (author)This paper proposes a nonlinear control architecture for flexible aircraft simultaneous trajectory tracking and load alleviation. By exploiting the control redundancy, the gust and maneuver loads are alleviated without degrading the rigid-body command tracking performance. The proposed control architecture contains four cascaded control loops:...conference paper 2021
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Abdul Rozak Rivai Fassah, Abdul (author), Mkhoyan, T. (author), de Visser, C.C. (author), De Breuker, R. (author)The developments in the field of aerospace materials and structures allow the more light weight air vehicles. However, the aircraft body, particularly wing, can deform more appreciably due to the occurrence of flow separation and flutter. Therefore, active control is necessary in order to maintain structural integrity. One of the proposed...conference paper 2021
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Mkhoyan, T. (author), de Visser, C.C. (author), De Breuker, R. (author)Advancements in aircraft controllers and the tendency towards increasingly lighter and more flexible aircraft designs create the need for adaptive and intelligent control systems. While lighter aircraft structures have the potential to show better structural and aerodynamic efficiency, they are also more susceptible to dynamic loads. A key...conference paper 2021
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Zahoor, Y. (author), Sodja, J. (author), De Breuker, R. (author), Voskuijl, M. (author)This paper discusses the development and whirl tower testing of an active translation induced camber morphing system for rotorcraft. The system deploys the morphing flap based on the amplitude and type of the input signal. As a case study, a demonstrator is developed and tested primarily under the centrifugal force generated by a whirl tower...conference paper 2021
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Mkhoyan, T. (author), Thakrar, Nisarg Rashmin (author), De Breuker, R. (author), Sodja, J. (author)In this study, the design and development of an autonomous morphing wing concept were investigated. This morphing wing was developed in the scope of, the Smart-X project, aiming to demonstrate in-flight performance optimisation. This study proposed a novel distributed morphing concept, with six Translation Induced Camber (TRIC) morphing...conference paper 2020
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Zahoor, Y. (author), De Breuker, R. (author), Voskuijl, M. (author)This paper presents an overview of the preliminary design process and findings aimed at morphing of trailing edge (TE) control surfaces for rotorcraft. A design methodology for a camber morphing control surface is presented, although twist can also be induced by applying differential camber of the morphing section span. The concept investigated...conference paper 2020
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Mkhoyan, T. (author), de Visser, C.C. (author), De Breuker, R. (author)Recent advancements in aircraft controllers paired with increasingly flexible aircraft designs create the need for adaptive and intelligent control systems. To correctly capture the motion of a flexible aircraft wing and provide feedback to the controller, a large number of states (nodes along the span) must be monitored in real-time. Visual...conference paper 2020
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Mkhoyan, T. (author), de Visser, C.C. (author), De Breuker, R. (author)Advancements in intelligent aircraft controller design, paired with increasingly flexible and efficient aircraft concepts, create the need for the development of novel (smart) adaptive sensing suitable for aeroelastic state estimation. In contrast to rigid states, aeroelastic state estimation requires more measurement points (displacements...conference paper 2020
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Mitrotta, F.M.A. (author), Rajpal, D. (author), Sodja, J. (author), De Breuker, R. (author)Aeroelastic tailoring offers an effective way to exploit the anisotropic properties of the composite materials used in lightweight aerospace structures. This paper presents a design methodology for experimental wings that employ a typical wingbox structure. The proposed methodology combines three different analysis tools: Proteus, a low-fidelity...conference paper 2020
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Roessler, Christian (author), Teubl, Daniel (author), Meddaikar, Yasser (author), Wüstenhagen, Matthias (author), Ossmann, Daniel (author), Sodja, J. (author), De Breuker, R. (author), Luspay, Tamás (author), Gyulai, László (author)The idea of the EU funded FLEXOP project is to raise efficiency of a currently existing wing by derivative solution with higher aspect ratio at no excess structural weight. In order to enable such a resulting highly flexible wing the project goal is to develop methods for active suppression of flutter and passive load alleviation. The developed...conference paper 2020
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Sodja, J. (author), De Breuker, R. (author), Meddaikar, Yasser (author), Roessler, Christian (author), Teubl, Daniel (author), Gyulai, László (author), Toth, Szabolcs (author), Nagy, Mihaly (author), Vanek, Balin (author)Ground testing campaign conducted on the FLEXOP demonstrator aircraft is presented in this paper. The conducted tests are grouped in structural, flight system and integration tests. Along with the description of the test setup and test execution, the main findings and conclusions are also given. The structural tests comprise the static, ground...conference paper 2020
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Lancelot, P.M.G.J. (author), De Breuker, R. (author)In this paper, a methodology is presented to size an aircraft wing-box accounting for steady and dynamic loads combined with active control. Several aerodynamic corrections are used and benchmarked to ensure a consistent level of fidelity during the load analysis. Reduced order models (ROM) of the aircraft movables, gust loads and maneuvers...conference paper 2019
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Mitrotta, F.M.A. (author), Sciacchitano, A. (author), Sodja, J. (author), De Breuker, R. (author), van Oudheusden, B.W. (author)In the present work Robotic Volumetric PIV is applied in a Fluid-Structure Interaction (FSI) investigation. The case studied involves the dynamic response of a flexible aluminium plate subjected to gust excitation. The experiment is carried out in the Open Jet Facility at Delft University of Technology, which is equipped with a gust generator....conference paper 2019
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Handojo, V.H. (author), Meddaikar, M.Y. (author), Dillinger, J.K.S. (author), Sodja, J. (author), De Breuker, R. (author)This paper presents a semi-experimental method which can be used to predict the gust response of a wind tunnel model. The method incorporates transfer functions of the wind tunnel model – in this case a flexible forward swept wing – which are obtained using sweep excitations with a gust generator. The prediction results are then compared with...conference paper 2019
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Schuurman, M.J. (author), Rattanagraikanakorn, B. (author), De Breuker, R. (author), Kassapoglou, C. (author)The introduction of Urban Air Mobility (UAM) vehicles will initiate many new and unique challenges to the current operational airspace environment. Many of these challenges are researched today, and solutions are investigated. The main goal of this ongoing research is to develop a safe and sustainable UAMsystem looking at the design of vehicles...conference paper 2019
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Rajpal, D. (author), De Breuker, R. (author)High aspect ratio strut braced aircraft can significantly reduce the induced drag. The inherent anisotropic behaviour of the composite material along with their weight saving potential can improve the performance of the aircraft during the flight. Thus, a composite strut braced aircraft is one of the promising candidates to achieve the...conference paper 2019
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Natella, M. (author), De Breuker, R. (author)This paper presents a unified framework for aeroelastic tailoring of fully-flexible free-flying composite aircraft. A continuous-time state-space model is used to describe the flow. The 3D composite wing structure is condensed into a Timoshenko beam model utiliz-ing a cross-sectional modeler. The aerodynamic and structural models are tightly...conference paper 2019