Searched for: author%253A%2522Karasek%252C%2520M.%2522
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Olejnik, D.A. (author), Muijres, Florian T. (author), Karasek, M. (author), Honfi Camilo, Leonardo (author), de Wagter, C. (author), de Croon, G.C.H.E. (author)
Natural fliers utilize passive and active flight control strategies to cope with windy conditions. This capability makes them incredibly agile and resistant to wind gusts. Here, we study how insects achieve this, by combining Computational Fluid Dynamics (CFD) analyses of flying fruit flies with freely-flying robotic experiments. The CFD...
journal article 2022
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Olejnik, D.A. (author), Wang, S. (author), Dupeyroux, J.J.G. (author), Stroobants, S. (author), Karasek, M. (author), de Wagter, C. (author), de Croon, G.C.H.E. (author)
This paper discusses a low-cost, open-source and open-hardware design and performance evaluation of a low-speed, multi-fan wind system dedicated to micro air vehicle (MAV) testing. In addition, a set of experiments with a flapping wing MAV and rotorcraft is presented, demonstrating the capabilities of the system and the properties of these...
conference paper 2022
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Gonzalez Archundia, G. (author), de Croon, G.C.H.E. (author), Olejnik, D.A. (author), Karasek, M. (author)
This paper proposes an integral approach for accurate ultra wide band indoor position control of flapping wing micro air vehicles. Three aspects are considered to reach a reliable and accurate position controller. The first aspect is a velocity/attitude flapping-wing model for drag compensation. The model is compared with real flight data and...
conference paper 2021
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Karasek, M. (author)
Studies of insect flight reveal how flapping-induced vibrations augment flight stability of tailless flapping-wing flyers.
contribution to periodical 2020
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Heitzig, D. N.W.M. (author), van Oudheusden, B.W. (author), Olejnik, D.A. (author), Karasek, M. (author)
This study investigates the wing deformation of the DelFly II in forward flight conditions. A measurement setup was developed that maintains adequate viewing axes of the flapping wings for all pitch angles. Recordings of a high-speed camera pair were processed using a point tracking algorithm, allowing 136 points per wing to be measured...
journal article 2020
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Martínez Gallar, B. (author), van Oudheusden, B.W. (author), Sciacchitano, A. (author), Karasek, M. (author)
Abstract: The objective of this experimental investigation is the volumetric visualization of the near wake topology of the vortex structures generated by a flapping-wing micro air vehicle. To achieve the required visualization domain (which in the present experiments amounts to a size of 60,000 cm<sup>3</sup>), use is made of robotic...
journal article 2020
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Nijboer, J. B.W. (author), Armanini, S.F. (author), Karasek, M. (author), de Visser, C.C. (author)
Tailless flapping wing micro aerial vehicles (FMWAVs) are known for their light weight and agility. However, given the fact that these FWMAVs have been developed only recently, their flight dynamics have not yet been fully explained. In this paper we develop grey-box models for the time-averaged longitudinal dynamics of a tailless FWMAV ...
conference paper 2020
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Heitzig, Dorian (author), van Oudheusden, B.W. (author), Olejnik, D.A. (author), Karasek, M. (author)
This study investigates the wing deformation of a flapping-wing micro air vehicle (MAV) in climbing and forward flight conditions. A measurement setup was developed that maintains adequate viewing axes of the wings for all pitch angles. Recordings of a high-speed camera pair are processed using a point tracking algorithm, allowing 136 points per...
conference paper 2019
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Olejnik, D.A. (author), Karasek, M. (author), Duisterhof, Bart (author), Scheper, K.Y.W. (author), van Dijk, Tom (author), de Croon, G.C.H.E. (author)
In the field of robotics, a major challenge is achieving high levels of autonomy with small vehicles that have limited mass and power budgets. The main motivation for designing such small vehicles is that, compared to their larger counterparts, they have the potential to be safer, and hence be available and work together in large numbers. One of...
conference paper 2019
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Karasek, M. (author), Perçin, M. (author), Cunis, Torbjørn (author), van Oudheusden, B.W. (author), de Wagter, C. (author), Remes, B.D.W. (author), de Croon, G.C.H.E. (author)
Flow visualisations are essential to better understand the unsteady aerodynamics of flapping wing flight. The issues inherent to animal experiments, such as poor controllability and unnatural flapping when tethered, can be avoided by using robotic flyers that promise for a more systematic and repeatable methodology. Here, we present a new...
journal article 2019
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Altartouri, H. (author), Roshanbin, A. (author), Andreolli, G. (author), Fazzi, L. (author), Karasek, M. (author), Lalami, M. (author), Preumont, A. (author)
Hovering flapping wing flight is intrinsically unstable in most cases and requires active flight stabilization mechanisms. This paper explores the passive stability enhancement with the addition of top and bottom sails, and the capability to predict the stability from a very simple model decoupling the roll and pitch axes. The various...
journal article 2019
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Kajak, K. M. (author), Karasek, M. (author), Chu, Q. P. (author), de Croon, G.C.H.E. (author)
Recently, several insect- and hummingbird-inspired tailless flapping wing robots have been introduced. However, their flight dynamics, which are likely to be similar to that of their biological counterparts, remain yet to be fully understood. We propose a minimal dynamic model that is not only validated with experimental data, but also able...
journal article 2019
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de Wagter, C. (author), Karasek, M. (author), de Croon, G.C.H.E. (author)
journal article 2018
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Del Estal Herrero, A. (author), Perçin, M. (author), Karasek, M. (author), van Oudheusden, B.W. (author)
Flow visualizations have been performed on a free flying, flapping-wing micro air vehicle (MAV), using a large-scale particle image velocimetry (PIV) approach. The PIV method involves the use of helium-filled soap bubbles (HFSB) as tracer particles. HFSB scatter light with much higher intensity than regular seeding particles, comparable to that...
journal article 2018
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Karasek, M. (author), Muijres, Florian T. (author), de Wagter, C. (author), Remes, B.D.W. (author), de Croon, G.C.H.E. (author)
Insects are among the most agile natural flyers.Hypotheses on their flight control cannot always be validated by experiments with animals or tethered robots.To this end, we developed a programmable and agile autonomous free-flying robot controlled through bio-inspired motion changes of its flapping wings.Despite being 55 times the size of a...
journal article 2018
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Martinez Gallar, Blanca (author), van Oudheusden, B.W. (author), Sciacchitano, A. (author), Karasek, M. (author)
The aim of this investigation is to provide an experimental volumetric visualization of the near wake topology of the vortex structures generated by a flapping-wing Micro Air Vehicle (MAV) by means of large-scale Robotic PIV. This novel technique implements coaxial illumination and imaging in combination with the use of Helium Filled Soap...
conference paper 2018
document
Del Estal Herrero, A. (author), Perçin, M. (author), Karasek, M. (author), van Oudheusden, B.W. (author)
Flow visualizations have been performed on a free flying flapping-wing Micro Air Vehicle (MAV), using a large-scale particle image velocimetry (PIV) approach. The PIV method involves the use of helium filled soap bubbles (HFSB) as tracer particles. HFSB scatter light with much higher intensity than regular seeding particles and comparable to...
conference paper 2018
document
Armanini, S.F. (author), Karasek, M. (author), de Visser, C.C. (author)
Biologically-inspired flapping-wing micro aerial vehicles are characterised by nonlinear, unsteady aerodynamics and complex dynamics, both highly challenging to model. To take full advantage of the flight capabilities of such vehicles, it is necessary to obtain insight into their dynamics in the different flyable conditions, and to provide...
conference paper 2018
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Rijks, Frank (author), Karasek, M. (author), Armanini, S.F. (author), de Visser, C.C. (author)
The effects of the horizontal tail surface on the longitudinal dynamics of an or- nithopter were studied by systematically varying its surface area, aspect ratio and its longitudinal position. The objective is to improve the understanding of the tail effect on the behaviour of the ornithopter and to assess if simple models based on tail geometry...
conference paper 2018
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Olejnik, D.A. (author), Sujit, A. (author), Karasek, M. (author), Remes, B.D.W. (author), de Croon, G.C.H.E. (author)
During flight, natural fliers flap, twist and bend their wings to enhance flight performance. Lift and thrust benefit from flexibility as well as from both passive and active wing deformation. At the same time, the active deformations are used for flight control. In this study, we investigate strategies of control moments generation in a bio...
conference paper 2018
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