These Drones Start Fires And Drop Bombs--For Good
Kelsey D. Atherton
at 10:15 AM Nov 5 2015
Unmanned Aerial System for Fire Fighting
Screenshot by author, from University of Nebraska-Lincoln
Drones // 

Not all fires set by robots are bad. Sometimes an avalanche, even one triggered by a drone's bomb, is a good thing. We live in a weird world, and part of maintaining that weird world sometimes means asking robots to do horrible things. Meet the University of Nebraska-Lincoln's “Unmanned Aerial System for Fire Fighting”, the proactive fire-starting drone, and the bomb-dropping, avalanche-starting Prospect, from Mountain Drones.

The Unmanned Aerial System for Fire Fighting, which could really use a catchier name, is made to start helpful fires. The Forest Service, more than anyone else in the business of preserving forests, enumerates the many benefits of prescribed burns:

  • Reduces hazardous fuels, protecting human communities from extreme fires
  • Minimizes the spread of pest insects and disease
  • Removes unwanted species that threaten species native to an ecosystem
  • Provides forage for game
  • Improves habitat for threatened and endangered species
  • Recycles nutrients back to the soil
  • Promotes the growth of trees, wildflowers, and other plants

Dirac Twidwell, one of the team members behind the fighting-fire-with-fire drone, published a study early this month saying not only are the risks of a prescribed fire less than that of wildfire, but also that drones are the better way to administer these fires.

From the University of Nebraska-Lincoln, here's how the fire-starting drones work:

The drones carry a cargo of ping pong-like balls filled with potassium permanganate powder. Before being dropped through a chute, each ball is manipulated and injected with liquid glycol, creating a chemical reaction-based flame after several seconds.

The drones would have the ability to drop the balls in a precise pattern over the landscape – on the perimeters and interior of a rectangular plot, for example. Detweiler said the robots could be programmed so they don't fly into areas that are too hot or windy for safe use.

So far, the firefighting-by-firestarting drones have only been tested indoors. The project is still in the early stages, but in the future swarms of drones could start and monitor prescribed burns, a robotic alternative to the risky human work of burning things deliberately.

Mountain Drones didn't start with a mission to drop bombs from robots. The company claims it has FAA exemption to fly drones for other, non-explosive purposes, though the FAA's own drone exemption search doesn't include any authorizations for “Mountain Drones” and the company has not yet responded to email request for information.

Following the death of a friend in an avalanche, the team behind Mountain Drones looked to see if there was a way they could use their unmanned flying machines mitigate that risk. The answer: drones with dynamite. Mountain Drones' Prospect model weighs 35 pounds, and so far only carries dummy explosives.

From Outside:

The Prospect has eight 30-inch-long propellers and a seven-foot wingspan. It flies for 45 minutes on one battery and can carry half its weight in dynamite, enough to clear five avalanche paths in one flight.

Here's how it would work: Instead of spending hours bootpacking to a ridgeline to drop a hand charge, ski patrollers would select a preprogrammed route for the drone to fly and manually drop the charges to clear the slope from a safe distance. Onboard sensors will calculate the snow-water equivalent—a measure of the snowpack's water content—and depth, allowing patrollers to identify persistent weak layers and breaking points and helping them determine where to make drops.

To fly in rough weather, Prospect has LED lights and a proprietary waterproof body. An armed drone may seem like a particularly militaristic solution to accumulated snow, but most solutions are. The Colorado Department of Transportation lists a range of explosive methods for dislodging dangerous accumulation:

CDOT/CAIC avalanche teams can use the following to trigger slides (please note, however, not all these measures are used on every slide path): 5-pound charges set by hand; a truck-mounted “avalauncher” that uses pneumatic pressure to fire 2.2-pound rounds; a 105 Howitzer leased from the Army that can fire 40-pound missiles up to seven miles; a helicopter that drops 30- to 50-pound bombs. (CDOT doesn't own the helicopter.)

Into this mix, an armed drone becomes just another tool, rather than a unique and scary risk.

Seeing these drones together, I couldn't help but be reminded of the mutants Avalanche and Pyro from X-Men. Spurned by society, rejected by the heroic X-Men, and kind of jerks in their own right, the fictional Avalanche and Pyro turn their talents to a life of villainy, committing terrorism for the Brotherhood of Evil Mutants. Fires and seismic shocks can certainly be turned to wicked purposes, but they don't necessarily have to be. As the FAA works to regulate drones, finding a way to incorporate helpful but risky efforts like the Unmanned Aerial System for Fire Fighting and Mountain Drone's Prospect should be, if not a priority, at least a consideration.

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