When you hear that a flying robot mimics an animal, you assume it’s a bird or an insect — or maybe a bat. How about a jellyfish?
A four-winged design created by Leif Ristroph and colleagues at New York University, which boasts a body plan reminiscent of a jellyfish, is more stable in the air than insect-like machines.
The prototype consists of a carbon-fibre frame surrounded by two pairs of thin plastic wings that open and close when driven by a motor. Its shape allows it to fly upright with little effort, without requiring sensors or intelligence to adjust its wings like those used by insects. “Making a dumb machine is a nice strategy for very small robots,” says Ristroph. “Without circuits and sensors, it’s also lighter.”
The robot is tethered to a power source for now, but improvements to the motor and wings should soon let it roam free.