Undefined's next-gen silent ion propulsion drone: still noisy
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Suseema Rupasinghe on LinkedIn: Undefined's next-gen silent ion propulsion drone: still noisy
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Undefined claims 4.5-min flight for its silent ion-propulsion drone
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New Drone Tech: No Propellers, and Yet It Flies!
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Ion Propulsion Drone Proves Its Commercial Viability
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eVTOL Ion Propulsion Drone Completes Test Flight
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Will Commercial Drones Ever Be Silent?
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eVTOL Ion Propulsion Drone Completes Test Flight
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eVTOL Ion Propulsion Drone Completes Test Flight
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Whisper Aero unveils ultra-quiet electric leaf blower, powered by aerospace tech