The UK has successfully fired a high-power laser weapon against an aerial target for the first time in a trial.

It is hoped that the test will pave the way for a low-cost alternative to missiles to shoot down targets like drones.

The DragonFire weapon is precise enough to hit a £1 coin from a kilometre away, the Ministry of Defence (MoD) says.

  • Buelldozer@lemmy.today
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    10 months ago

    DragonFire is a 50KW system, the US is supposed to have systems that are 6 and 10 times more powerful available in 2024 with a system that’s 20 times more powerful in 2026. The US already has a mobile system, deployed on Army Strykers called DE M-SHORAD, as powerful as the British DragonFire.

    A 10KW will down a decent sized drone in 8-15 seconds depending on where it hits. A 50KW will obviously do it faster and the 300KW and up systems will likely make it near instant.

    • afraid_of_zombies@lemmy.world
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      10 months ago

      Hmm interesting. Imagine a new arms race between lasers and drones. Country A can make this crazy laser defense system. Country B can make 50x as many drones as country A can handle.

    • JohnDClay@sh.itjust.works
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      10 months ago

      Is it 50kw power draw, or thermal power delivered to the target? Even if it’s power delivered to target, that’s a 10 deg/sec rise in temp for a 1kg mass with the thermal capacity of water, it’s not insane. (If I’m doing my math right)

      • Buelldozer@lemmy.today
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        10 months ago

        I believe they are rated by power output at the emitter. I think your math is correct but these systems aren’t heating water, nor are they heating a kilogram of it. They’re simply trying burn through / melt a few ounces of plastic. The journalist who test fired a 10KW system was able to down a drone in about 15 seconds by slagging its propeller so I have to imagine that a 50KW system would do it even faster, potentially as quick as just a second or two.

        • JohnDClay@sh.itjust.works
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          10 months ago

          That’s why I was saying larger missiles would be more resistant, since they’d have higher thermal conductivity aluminum, and a shorter closing time than 15sec.