this post was submitted on 15 Feb 2025
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[Combat] Russian soldier shows fields covered in fiber optic wires from Ukrainian drones. (i.imgur.com)
submitted 1 week ago by [email protected] to c/[email protected]
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[–] [email protected] 4 points 6 days ago* (last edited 6 days ago)

Sadly, the article has been written by a non-competent person.

I can claim to be a competent person and explain a bit.

At a drone's own voltage (4..8 lithium cells in series), powering an FPV attack drone requires 2 wires of 2,5 - 4,0 square millimeters of thickness. One meter of this pair of wires weighs about 50 grams. One kilometer would weigh 50 kilograms, but would exhibit a voltage drop proportional to length, so in reality, you'd need to increase the diameter several times.

If one was into physical experiments, using super high voltage and thinner wires, this could be brought down, but voltage converters on both ends would gain weight and insulation thickness would have to increase: as you raise voltage in an electrical cable (e.g. into kilovolts) current starts arcing across air gaps and breaking though insulation. That's why high voltage power lines have long ceramic / glass insulators. :) So building a hypothetical "330 kilovolt drone" would be the last thing anyone would do. :)