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3D-printed sound-powered jet engines propel micro drones — fliers are completely silent; researchers use ultrasonic frequencies to drive 12,000-RPM silent hovering fliers
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· /u/Stukwan
· 2026-08-17
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submitted by /u/Stukwan [link] [comments]
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출처: www.reddit.com ·
https://www.reddit.com/r/technology/comments/1vqizyv/3dprinted_soundpowered_jet_engines_propel_micro/
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