Re: 'fly by wire' drones
The Ukrainians have discovered a way of spotting the optical wires because they reflect light. THere are plenty of videos showing this on YT etc.
I gave an example of a video showing the actual fibre in use, and it doesn't look very reflective. I've also handled a LOT of fibre, and it isn't very reflective. It's also one of those things I've been curious about, ie what type of fibre is being used, and where that's coming from. My reasonably educated guess is it's probably the same fibre type used for blown fibre installations. That's available in large drums, ie 100km or more. It's also pretty strong given the application, and cladding tech is much better than the old PCF where the cladding would degrade pretty quickly.. Which isn't really an issue in this application, because the fibre links are only temporary.
It might also be plastic rather than glass fibre. That's sometimes used to flood-wire buildings because it was cheaper, but last time I looked, that was mostly for multi-mode optics. So unlikely given that has a much shorter range than single-mode fibre. So they're probably using SMF and standard optronics, especially given the claimed <10km range.. But it would also be possible to extend the range to <40km by swapping the optics for LH versions. Power consumption isn't that much higher, but the mass of the cable spool in the drone obviously would be. But then just use it on a bigger drone.
I also think a neat application of this would be to rig up battlefield comms quickly, and more safely than a scaley back with a cable spool. Fly drone to your outpost, unplug spool from drone and plug it into your 'radio'. 10Gbps Ethernet to your trench and no need for seperate Tx & Rx fibres because single-fibre working is a thing. Hopefully something the good folks at Blandford are doing, or have already done.
But I'm sure you can cite videos showing how cobwebs are detected and followed by ISR drones flying at maybe 100m or more..
(also curious what the environmental/ecological impacts of having a lot of non-biodegradable fibre strewn across battlefields would be. But somewhat less than the impact of a FAB-3000. Another Patrick Lancaster video also showed Russians rigging netting over roads into Sudhza as a low-tech anti-drone solution.)