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Friday 17 January 2020

Robot bird with real pigeon feathers to improve agility

PigeonBot is a robotic bird outfitted with real pigeon feathers that move to reshape its wings like an actual bird. Developed by researchers in Stanford's LentinkLab, the remote-controlled PigeonBot demonstrates how morphing wings improves flying agility. (Video below.) Their resulting technical paper is the cover story in the current issue of the journal Science Robotics. From Science News:

Birds can modify the shape of their wings by fanning out their feathers or shuffling them closer together. Those adjustments allow birds to cut through the sky more nimbly than rigid drones....

Researchers bent and extended the wings of dead pigeons to investigate how the birds control their wing shape. Those experiments revealed that the angles of two wing joints, the wrist and the finger, most affect the alignment of a wing’s flight feathers. The orientations of those long, stiff feathers, which support the bird in flight, help determine the wing’s shape. Based on those findings, the team built a robot with real pigeon feathers, whose faux wrists and fingers can morph its wing shape as seen in the pigeon cadavers.



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