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Russia/Ukraine conflict

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On combatting drones:
This may sound 1950 trash scifi-ish and perhaps it is, but aren’t drones inherently vulnerable to electromagnetic interference? Some kind of pulsed Zzzzzaapppp emanating from, perhaps, a capacitor-based discharger, or a klystron (Poll: how many of you ever have heard of those, let alone familiar with them🤓)?
Nothing scifi-ish about it. The Russians are quite good at electronic countermeasures that can incapacitate drones. Particularly low cost drones. Higher end drones are better hardened against electronic countermeasures. There's essentially a game of cat and mouse going between hardening drones and improving countermeasures.
 

EUR 5B in military aid: EU reveals details of special fund for Ukraine

18.03.2024 20:00

The European Council today decided to increase the financial ceiling of the European Peace Facility (EPF) by EUR 5 billion in current prices, and ring-fence this top-up for Ukraine, by establishing a dedicated Ukraine Assistance Fund (UAF) within the EPF. [...


 
On combatting drones:
This may sound 1950 trash scifi-ish and perhaps it is, but aren’t drones inherently vulnerable to electromagnetic interference? Some kind of pulsed Zzzzzaapppp emanating from, perhaps, a capacitor-based discharger, or a klystron (Poll: how many of you ever have heard of those, let alone familiar with them🤓)?

They exist. Somebody, I think one of the Baltic states gave some to Ukraine a year or more ago. Military grade electronics is going to be hardened against EMPs so they will be of limited effectiveness. Also EMPs take a lot of energy to charge up and electricity on a battlefield is not broadly available. The small commercial drones that are used for recon and small bomb dropping are easy to charge up. A small generator or plugging into the socket that used to be for the cigarette lighter on any vehicle with one can charge up the batteries fairly quickly. But an EMP weapon is going to require more energy and might require a bigger energy source than is usually available on the front lines.

There are also many attempts to jam the frequencies used by drones. More sophisticated drones have the ability to carry out the mission if their signal is being jammed. This is especially true of suicide drones that will continue on to their target even if they lose the link from home base. The loss rate for the small commercial drones is staggeringly high on both sides in part because of jamming.
 
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IMG_2007.jpeg


 
On combatting drones:
This may sound 1950 trash scifi-ish and perhaps it is, but aren’t drones inherently vulnerable to electromagnetic interference? Some kind of pulsed Zzzzzaapppp emanating from, perhaps, a capacitor-based discharger, or a klystron (Poll: how many of you ever have heard of those, let alone familiar with them🤓)?

I've heard of them but not all that familiar with them. I think the problem is that they are broad spectrum and might wipe out your drones and other electronics as well as their drones. Also I believe they suffer from inverse square, so there is a range limit. (Dirigibles worked well in WWI until planes were able to reach high altitudes.)
The concept of HERF guns has been around on the Internet for a long time. I remember reading about people trying to DIY them in the late 90's on some early websites, along with other such fun topics as railguns.

Simple in concept, there are many hacky (and questionably executed) examples around (i.e. YouTube "HERF" guns which are just gutted microwaves pointed at things, but not really High Energy RF), but in reality trying to project sufficient energy at any real distance is quite difficult, thanks to the inverse square law as well as the difficulty of keeping RF energy focused in a tight beam so you're not wasting it everywhere except your target.

I wonder if a more distributed approach might be more effective - rather than trying to build one giant emitting device capable of throwing enough energy at a target potentially several km away, a group of (relatively) smaller devices all throwing energy at it might be more effective, much like killing cancer cells by many smaller doses from different angles rather than one singular large dose along one angle.

There are various hand held options already available on the market but I doubt they can really be effective against anything beyond garden variety quadcopter type drones at a few hundred feet, especially when they run off self-contained rechargeable batteries and aren't much bigger than a battle rifle...
 
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The concept of HERF guns has been around on the Internet for a long time. I remember reading about people trying to DIY them in the late 90's on some early websites, along with other such fun topics as railguns.

Simple in concept, there are many hacky (and questionably executed) examples around (i.e. YouTube "HERF" guns which are just gutted microwaves pointed at things, but not really High Energy RF), but in reality trying to project sufficient energy at any real distance is quite difficult, thanks to the inverse square law as well as the difficulty of keeping RF energy focused in a tight beam so you're not wasting it everywhere except your target.

I wonder if a more distributed approach might be more effective - rather than trying to build one giant emitting device capable of throwing enough energy at a target potentially several km away, a group of (relatively) smaller devices all throwing energy at it might be more effective, much like killing cancer cells by many smaller doses from different angles rather than one singular large dose along one angle.

There are various hand held options already available on the market but I doubt they can really be effective against anything beyond garden variety quadcopter type drones at a few hundred feet, especially when they run off self-contained rechargeable batteries and aren't much bigger than a battle rifle...
part of the new Ford class carriers design brief is a huge amount of excess power for future weapons such as you are talking about
 
part of the new Ford class carriers design brief is a huge amount of excess power for future weapons such as you are talking about
Even implemented on such a platform, I imagine that overall efficiency (power consumed vs power hitting target) would likely favor a few devices mounted along the platform, crossing their streams so to speak, versus one big device. Unless perhaps the one big device was a bunch of smaller devices stacked on each other. I am thinking of things like trying to cool all the hardware the large amount of power is being discharged through, for example - much like cooling smaller battery cells is generally easier than larger ones because the heat in the center has to flow further on larger devices. Plus building and aiming the RF waveguides and so on (especially if you need to slew the targeting quickly) will be easier if they're smaller ...
 
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Didn't know Ukraine had an AWACS in service.
Ukraine does not but NATO is in the air intensively with their AWACS planes on the eastern frontier looking into Russia, and in particular these days along their lines with Ukraine.

Secretive Surveillance Flights Circle Above Russian Activity