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A tailless aerial robotic flapper reveals that flies use torque coupling in rapid banked turns
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A tailless aerial robotic flapper reveals that flies use torque coupling in rapid banked turns
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Journal Article
A tailless aerial robotic flapper reveals that flies use torque coupling in rapid banked turns
2018
Overview
Insect flight can be fast and agile, making it hard to study its detailed aerodynamics. Karásek
et al.
designed an untethered, flapping-wing robot with impressive agility that can mimic fruitfly maneuvers (see the Perspective by Ruffier). They studied the robot's motion during rapid banked turns, which revealed that passive motion through the turn generated yaw torque coupling. This correcting yaw rotation propelled the robot toward the escape heading needed for effective turning.
Science
, this issue p.
1089
; see also p.
1073
An untethered, flapping-wing robot with impressive agility is capable of mimicking maneuvers of the fruitfly.
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 fruit fly, the robot can accurately mimic the rapid escape maneuvers of flies, including a correcting yaw rotation toward the escape heading. Because the robot’s yaw control was turned off, we showed that these yaw rotations result from passive, translation-induced aerodynamic coupling between the yaw torque and the roll and pitch torques produced throughout the maneuver. The robot enables new methods for studying animal flight, and its flight characteristics allow for real-world flight missions.
