Skip to Content
Uncategorized

Drones that perch like birds could go on much longer flights

A simple gripping mechanism allows unmanned aerial vehicles to save energy by resting on ledges and poles.
March 13, 2019
YALE UNIVERSITY/HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY/RPL, KTH ROYAL INSTITUTE OF TECHNOLOGY/OREBRO UNIVERSITY/UNIVERSITY OF HONG KONGYale university/Hong Kong University of Science and Technology/RPL, KTH Royal Institute of Technology/Orebro University/University of Hong Kong

It’s a bird! It’s a drone! Well, um, actually it’s a drone that perches like a bird.

Just as a bat might cling to a wall or a bird perch on a branch to rest, drones can also take an energy-saving break by grasping onto something.

“Perching and resting can provide lower power consumption, better stability, and larger view ranges in many cases,” says Yale University’s Kaiyu Hang, lead author of a paper published in Science Robotics today. He says this strategy would be very useful for so-called perch-and-stare applications, where drones sit up high and make long-term observations.

Drone perching has been explored before, but it has often required complicated maneuvering. The new drone has a gripper that lets it grab onto anything smaller than its opening width, like branches, signs, or lights. The team outfitted the drone with three controllable fingers tipped with “contact modules” (attachments that serve as the connecting point to objects) that let it mimic the perching styles of different animals, such as bats or birds of prey.

Original image: Yale university/Hong Kong University of Science and Technology/RPL, KTH Royal Institute of Technology/Orebro University/University of Hong Kong

For example, by hooking one of its sides onto an edge, the drone can switch off two propellers, using about 45% less energy. It can also grasp a rod to hang upside down like a bat, allowing all the rotors to be shut off. Or it can even rest on a stick, which—although the propellers would need to stay on—uses about 69% less energy than hovering.

Giving drones grip can also enable greater lifting strength and safer interactions with humans. “Once an unmanned aerial vehicle (UAV) is perched, it will be able to lift dramatically larger loads without requiring any power from the rotors,” says Hang.

Next up for the team is equipping these drones for real-life conditions, like weather outdoors. If these drones can consistently get their footing, they could be in for some marathon flights ahead. With a few breaks thrown in, of course.

Original image: Yale university/Hong Kong University of Science and Technology/RPL, KTH Royal Institute of Technology/Orebro University/University of Hong Kong

Keep Reading

Most Popular

Large language models can do jaw-dropping things. But nobody knows exactly why.

And that's a problem. Figuring it out is one of the biggest scientific puzzles of our time and a crucial step towards controlling more powerful future models.

The problem with plug-in hybrids? Their drivers.

Plug-in hybrids are often sold as a transition to EVs, but new data from Europe shows we’re still underestimating the emissions they produce.

How scientists traced a mysterious covid case back to six toilets

When wastewater surveillance turns into a hunt for a single infected individual, the ethics get tricky.

Google DeepMind’s new generative model makes Super Mario–like games from scratch

Genie learns how to control games by watching hours and hours of video. It could help train next-gen robots too.

Stay connected

Illustration by Rose Wong

Get the latest updates from
MIT Technology Review

Discover special offers, top stories, upcoming events, and more.

Thank you for submitting your email!

Explore more newsletters

It looks like something went wrong.

We’re having trouble saving your preferences. Try refreshing this page and updating them one more time. If you continue to get this message, reach out to us at customer-service@technologyreview.com with a list of newsletters you’d like to receive.