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Leszek Karlik

@jzillw @cstross

An FPV drone will have small warhead with an effective blast range of a few metres, you need lots of fuel for 50 metres of effective kill radius.

Generally, blast waves are a very inefficient way to kill people because they go down with cube of the radius, which is why shrapnel is used (its density decreases with square of the radius).

Fuel-air explosives start the explosion over a larger volume which mitigates the cube law somewhat, but you still need lots of fuel to have a large kill radius.

14 August at 16:12 | Wall-to-wall | Open on circumstances.run
4 comments
Jacek Wesołowski

@Leszek_Karlik @cstross I wasn't thinking about blast radii. The drone is coming in at 20m/s or more. Unless you're perfectly positioned to intercept it, your window of opportunity is in the order of 3 seconds. In video games we call that "fast-paced". God help you if there's more than one.

14 August at 17:28 | Open on mastodon.gamedev.place
Isaac Ji Kuo

@jzillw @Leszek_Karlik @cstross

That's why it's not really a weapon system problem, it's a detection and tracking problem. A human shotgunner can handle the kill IF the tracking system shows him where the incoming threat is.

This system could include a network of spaced apart microphones - perhaps microphones on each soldier. This won't be able to detect glide bombs, but could track the location of most nearby drones with adequate precision.

14 August at 17:55 | Open on spacey.space
Brie Mmm

Acoustic detection was all the rage before radar was invented; most devices were rather unwieldy, but there were also portable personal systems, like this German one:

https://1.bp.blogspot.com/-M7iDSsoA6_g/V8jmRT8R6AI/AAAAAAAAK4w/5agLXmyGXYImWKRCs5w_nRAyBnkyZHwGgCLcB/s1600/acoustic_locator_13.jpg

where sound tubes were paired with “glasses”, to precisely direct line of sight.

Microphone network would need to have current and precise information about soldiers' relative postitions; I wonder what method would be fast, precise and not easy to spot by itself.

Acoustic detection was all the rage before radar was invented; most devices were rather unwieldy, but there were also portable personal systems, like this German one:

https://1.bp.blogspot.com/-M7iDSsoA6_g/V8jmRT8R6AI/AAAAAAAAK4w/5agLXmyGXYImWKRCs5w_nRAyBnkyZHwGgCLcB/s1600/acoustic_locator_13.jpg

where sound tubes were paired with “glasses”, to precisely direct line of sight.
14 August at 19:08 | Open on venera.social
7leaguebootdisk

@isaackuo @jzillw @Leszek_Karlik @cstross they use acoustic detection to spot long range Russian drones already.

15 August at 0:35 | Open on mindly.social
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