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van Beers, J.J. (author), de Visser, C.C. (author)Ensuring the reliability and validity of data-driven quadrotor model predictions is essential for their accepted and practical use. This is especially true for grey- and black-box models wherein the mapping of inputs to predictions is not transparent and subsequent reliability notoriously difficult to ascertain. Nonetheless, such techniques 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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de Heer, P. (author), de Visser, C.C. (author), Hoogendoorn, M.L. (author), Jentink, Henk W (author)In this paper, a new nonlinear control allocation method is presented for a distributed electric propulsion (DEP) aircraft. As the electric propellers can be used actively for control, in addition to the control surfaces, the DEP aircraft is over-actuated. This freedom in control effectors can be exploited with an appropriate control allocation...conference paper 2023
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Fang, X. (author), de Visser, C.C. (author), Pool, D.M. (author), Holzapfel, Florian (author)This paper proposes a new method that estimates the three-dimensional stochastic wind velocity for an aircraft equipped with a Pitot-static tube and airflow vanes. Since the performance of most state estimators, e.g., the extended Rauch-Tung-Striebel smoother, relies on the process and measurement noise covariance settings, the proposed method...conference paper 2022
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Delfosse, A. (author), de Visser, C.C. (author), Pool, D.M. (author)As of 2019, the FAA and EASA require all airline pilots to complete stall and recovery training as integral part of their training. To mitigate risks, this training takes place in ground-based simulators. To enable this, realistic models of aircraft behaviour in the stall regime need to be developed. In this paper, a newaerodynamic stall...conference paper 2022
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Imbrechts, A. (author), de Visser, C.C. (author), Pool, D.M. (author)To gain more insight into human sensitivity to variations in simulated stall buffets, Just Noticeable Difference (JND) thresholds were estimated using a passive human-in-the-loop flight simulator experiment. Using an in-house developed flow separation-based stall and buffet model of the Cessna Citation II, JND thresholds were determined for the...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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Solanki, P. (author), de Visser, C.C. (author)Quadcopters are becoming increasingly popular across diverse sectors. Since rotor damages occur frequently, it is essential to improve the attitude estimation and thus ultimately the ability to control a damaged quadcopter. This research is based on a state-of-the-art method that makes it possible to control the quadcopter despite the total...conference paper 2022
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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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Nabi, H.N. (author), de Visser, C.C. (author), Pavel, M.D. (author), Quaranta, Giuseppe (author)The research presented in this paper focuses on the development of a quasi-Linear Parameter Varying (qLPV) model for the XV-15 tiltrotor aircraft. The specific category of qLPV modeling technique, known as the model stitching technique, is employed to model the time-varying dynamics of XV-15 tiltrotor aircraft over the entire flight envelope....journal article 2021
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van Ingen, J.B. (author), de Visser, C.C. (author), Pool, D.M. (author)Since 2019, a key element of simulator-based training of airline pilots is stall training. A major and still largely open research question is which level of model fidelity is required for effective training. As part of an effort to answer this question, a model of the quasi-steady stall dynamics of a Cessna Citation II aircraft is identified...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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Sun, Sihao (author), Cioffi, Giovanni (author), de Visser, C.C. (author), Scaramuzza, Davide (author)Fault-Tolerant control is crucial for safety-critical systems, such as quadrotors. State-of-Art flight controllers can stabilize and control a quadrotor even when subjected to the complete loss of a rotor. However, these methods rely on external sensors, such as GPS or motion capture systems, for state estimation. To the best of our knowledge...journal article 2021
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Mkhoyan, T. (author), de Visser, C.C. (author), De Breuker, R. (author)Advancements in aircraft controller design, paired with increasingly flexible aircraft concepts, create the need for the development of novel (smart) adaptive sensing methods suitable for aeroelastic state estimation. A potentially universal and noninvasive approach is visual tracking. However, many tracking methods require manual selection...journal article 2021
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Marschalk, S. (author), Luteijn, P.C. (author), van Os, D. (author), Pool, D.M. (author), de Visser, C.C. (author)As of April 2019, upset prevention and recovery training in flight simulation training devices is a mandatory practice for commercial and civil aircraft pilots. Aircraft stalls are a well-known upset type, therefore simulation of aircraft stall behavior is required. A key characteristic of stalls is the stall buffet, which in current stall...conference paper 2021
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Mkhoyan, T. (author), Wang, Xuerui (author), de Visser, C.C. (author), De Breuker, R. (author)The advancements made in aircraft control methodology and the tendency towards increasingly lighter aircraft structures open the opportunity to higher structural performance and aerodynamic efficiency. However, with the reduction of structure weight, the structure stiffness reduces typically, which makes the structure more susceptible to...other 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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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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Zhang, Y. (author), Huang, Y. (author), Chu, Q. P. (author), de Visser, C.C. (author)In this paper, an online flight envelope protection system is developed and implemented on impaired aircraft with structural damage. The whole protection system is designed to be a closed-loop of several sub-systems, including system identification, damage classification, flight-envelope prediction and fault-tolerant control. Based on the...conference paper 2020
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Sun, Sihao (author), Wang, Xuerui (author), Chu, Q. P. (author), de Visser, C.C. (author)In order to further expand the flight envelope of quadrotors under actuator failures, we design a nonlinear sensor-based fault-tolerant controller to stabilize a quadrotor with failure of two opposing rotors in the high-speed flight condition (>8 m/s). The incremental nonlinear dynamic inversion approach which excels in handling model...journal article 2020