Drones for everything except putting out fires

Using drone swarms to fight wildfires sounds great, but evaporation and turbulence make it unworkable. The solution? Boeing 737 air tankers.

English · Original discussion in Spanish · Published

Why drones can't fight wildfires

While drones are used to deliver packages, film weddings, or even detect where people relieve themselves in the countryside — the latest brainchild — wildfire suppression still relies on helicopters and airplanes. The idea of deploying swarms of small drones carrying water sounds great in a tweet, but physics gets in the way.

A commercial drone carries between 5 and 20 liters. In a wildfire, that water evaporates before it even reaches the flames. The heat front and updrafts — which already make 10-ton helicopters wobble — would vaporize any lightweight drone. Turbulence would make them uncontrollable, with a risk of collisions. As one analysis puts it, you need a big blast of water, not a drizzle.

In the United States, they already use Boeing 737s converted into air tankers, capable of dropping tens of thousands of liters in a single pass. The drone proposal, however ingenious it may seem, runs into the laws of thermodynamics and logistics. Sometimes, the old school remains the only school.

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Summary of a discussion on Burbuja.info - Foro de economía, actualidad y política., translated from Spanish and reviewed before publication. Read the full discussion (29 replies).

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