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Insects Stabilize Flight Using Natural Wing Oscillations — New Study

A team of researchers from the University of California, the University of North Carolina at Chapel Hill and Pacific Northwest National Laboratory has found that insects use natural oscillations to stabilize their flight. In their study, published in the journal Science Robotics, the researchers used what they describe as “a type of calculus” (chronological calculus) to better understand the factors that are involved in keeping flapping winged insects aloft. Matěj Karásek, with Delft University of Technology has published a Focus piece in the same journal issue describing the work done by the team on this new effort.

This led the researchers to believe that some other factor must be involved. They noted that prior researchers had mentioned associated with insect and robot flapping. That gave them the idea to use chronological calculus—a type of math for analyzing the flow of non-autonomous dynamic systems—to describe the flapping in mathematical terms. They found that when they added natural wing oscillations (vibrations) to the equations, stabilization improved. They further noted that the vibrations took on a more important role in stabilization when the flying insect or robot was subjected to disturbances.

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The researchers also found that for , vibrations provided little in the way of stabilization. But larger organism such as hawkmoths and hummingbirds exhibited much improved stability. Their findings could be of use to engineers developing robots that fly via flapping.

Source: techxplore

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