2019
DOI: 10.1177/1756829319833683
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Accurate position control of a flapping-wing robot enabling free-flight flow visualisation in a wind tunnel

Abstract: 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 flapping-wing micro air vehicle (FWMAV)-specific control approach that, by employing an external motion tracking system, achieved autonomous wind tunnel flight with a maximum… Show more

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Cited by 11 publications
(10 citation statements)
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“…However, the use of Taylor's hypothesis fails to represent the wake at more realistic flight conditions, where the angle of attack is quite high and the interaction between the velocities induced by the wings and the free stream is too complex to be accounted for by a simple uniform convection model. Free-flight visualizations of the DelFly (del Estal Herrero et al 2018;Karasek et al 2019) give, furthermore, clear evidence that in slow forward flight, the wake is predominantly aligned along the body axis direction, making the assumption of convection in the free stream direction unrealistic.…”
Section: Flow Visualization Research On the Delfly Mavmentioning
confidence: 99%
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“…However, the use of Taylor's hypothesis fails to represent the wake at more realistic flight conditions, where the angle of attack is quite high and the interaction between the velocities induced by the wings and the free stream is too complex to be accounted for by a simple uniform convection model. Free-flight visualizations of the DelFly (del Estal Herrero et al 2018;Karasek et al 2019) give, furthermore, clear evidence that in slow forward flight, the wake is predominantly aligned along the body axis direction, making the assumption of convection in the free stream direction unrealistic.…”
Section: Flow Visualization Research On the Delfly Mavmentioning
confidence: 99%
“…However, larger differences were found in the wing stroke direction, which were attributed to structural vibrations of the MAV body, which affect the force balance measurements depending on the clamping position. For the free-flight measurements in the current study, the same procedure is followed as for the preliminary free-flight visualization experiments described in (Karasek et al 2019), by combining the PIV visualization with a position-control system for autonomous flight in the wind tunnel environment.…”
Section: Objectives Of the Present Investigationmentioning
confidence: 99%
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