Skip to main content

What happens when a drone is hit by lightning? It’s not pretty

Drones vs Lightning ⚡
What happens when you cross a drone with a lightning bolt? In an experiment that would make Benjamin Franklin both proud and a bit jealous, the University of Manchester and YouTuber Tom Scott decided to experiment with electricity — and a DJI Phantom 3 drone. Not only did the drone instantly fall out of the sky, but a second attempt to direct the strike with a lightning rod actually made the quadcopter worse off.

The experiment uses the University’s High Voltage Lab, which has a 2-megavolt impulse generator that can conjure up a lightning strike on demand. The U of M’s Dr. Vidyadhar Peesapati and Dr. Richard Gardner set up the lab to create a lightning strike rated at more than 1 million volts of electricity.

For the first experiment, the drone was tethered to keep it in place but otherwise flew as the Phantom would under normal conditions. A bolt of lightning strikes, and the drone instantly drops from the sky. There is no visible damage to the exterior, but the team said all of the internal electronics were fried since the electricity took the path of least resistance. In slow motion, you can watch the lightning enter one end of the drone and shoot out of the bottom.

But what if the drones was a bit more protected, perhaps with a lightning rod to divert the brunt of the damage away from the quadcopter? The team rigged a second drone with a piece of conductive copper tape as a sort of makeshift lightning rod, becoming one of the tallest points on the drone.

They reset the lightning machine, zapped the new drone — and the propellers blew completely off. While the first experiment only damaged the drone on the inside, instead of taking to the copper tape, the lightning favored the propellers. The group said the sheer force of the strike took the propellers off before taking a path through the drone’s internal circuits, leaving the second “protected” version worse for wear.

While the experiment is incredible to watch, it also carries scientific significance. The group says that similar research has led to changes in piloted airplane design, but little has been done to see how unmanned aerial vehicles fare in a lighting storm. Small drones typically don’t fly in storms because the wind seriously drains their already short battery life; as waterproof variations begin popping up, drone flight during storms and rain may become more common.

The team’s recommendation? Keep ’em grounded during lightning storms if you don’t want a few thousand dollars worth of equipment to go up in one zap.

Editors' Recommendations

Hillary K. Grigonis
Hillary never planned on becoming a photographer—and then she was handed a camera at her first writing job and she's been…
U.S. may call a halt to its civilian drone program over security fears
DJI Mavic 2 Pro

The U.S. Department of Interior (DoI) is set to permanently ground its fleet of around 1,000 drones because of fears over security, the Financial Times (FT) reported.

The remotely controlled quadcopters were taken out of service in October 2019 pending a thorough review of the civilian drone program amid concerns that the Chinese-made machines could be used to send sensitive data back to China.

Read more
What happens when you mix foosball and robots? A new game called RoboSoccer
robosoccer robot upgrade foosball rs5

RoboSoccer: Table Soccer game with Robot Players - campaign video

Along with whiteboards, MacBooks, and some overworked co-founders, foosball tables are probably one of the most common sights you’ll find at a tech startup. So what could be more appropriate than a high tech overhaul of this retro gaming item? Called RoboSoccer, this nifty Kickstarter reimagining of table soccer combines the concept of the popular original game with a team of impressively agile miniature robots, controlled via mobile app, on a folding pitch.

Read more
What happens to concrete when you mix it in space? ISS astronauts investigate
iss concrete mixing experiment mics gerst 1

European Space Agency astronaut Alexander Gerst works on the MICS experiment aboard the International Space Station. NASA

Concrete is a material used everywhere on Earth due to its strength and relatively light weight. That makes it a useful candidate for a material to build structures in space as well. But you can't simply mix up cement in space the same way you do on Earth and expect to reach the same result. The astronauts on board the International Space Station (ISS) have been performing experiments to see how concrete reacts during the hardening process in microgravity, and how this affects its microstructure and material properties.

Read more