WASHINGTON, Jan 17 — Since the dawn of the aviation era, inventors have strived to build aircraft that fly as nimbly as birds, whose morphable wings allow for faster, tighter turns and more efficient gliding. That dream was a step closer to reality yesterday after researchers at Stanford...
This December 18, 2017, image courtesy of Lentink Lab at Stanford University in Stanford, California, shows a PigeonBot in flight. — Lentink Lab/Stanford University/AFP pic
“Aerospace and materials engineers can start rethinking how they can design, manufacture and control materials and wings that morph as deftly as birds do,” said David Lentink, an assistant professor of mechanical engineering at Stanford and the senior author of two papers describing the results in the journalsAll four-limbed animals, including dinosaurs, evolved from an ancestor that had five digits at the end of its limbs, which became hands, paws, flippers, or wings over time.
In flight tests, manipulation of the wrist and fingers initiated stable turn manoeuvres at tight angles, which the researchers said provided some of the first evidence that birds primarily use these digits to steer in flight.
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