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Drones outperform artillery in combat, says Ukrainian commander
(euromaidanpress.com)
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this post was submitted on 31 Jul 2024
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I'm almost afraid to bring it up; but there's a drone system being/was being used in Africa to deliver medications and whatnot that use blades designed after Owl wings that make almost no sound. It just sounds like a small gust of wind.
Stooka JU-87 Unmistakable sound, you heard that sound you ran
You can go to YouTube and listen to audio of Katyusha salvoes. The sound is hellish.
Is that those helical rotors? They're supposed to be quite good in many ways, not just the noise.
~~I don't think so. IIRC it was more about the shape of the blade and that there was only one of them on each rotor with a weight built in to balance it out. With one rotor turbulence is negligible while still providing lift.~~
Here's a video about Owl wings.
Here's ~~the~~ another video about the rotors:
https://iv.melmac.space/watch?v=z58RORCUTao
Incredible stuff! The sound is so buttery. People who understand harmonics and sound engineering amaze me. I'd love to build a quadcopter that sounds like this.
Pretty slick invidious links there too, last time I used that it wasn't a very good experience, glad it's come this far.