Dragonfly-sized drone flaps its wings more efficiently than insects

No matter how good our human designs may be, evolution has had a 4-billion-year head start, so there's no shame in copying off Mother Nature's homework. Engineers at the University of Bristol have done just that – and even improved on it – developing a tiny flying robot that flaps its wings more efficiently than an insect, using a unique electrostatic "zipping" mechanism.

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https://newatlas.com/drones/flapping-wing-drone-laza-electrostatic/