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The search for stealthier drones

Original: 'An annoying buzz': The search for stealthier drones

Drone makers are working on quieter aircraft, with the characteristic buzzing hum of small drones emerging as a key obstacle to wider adoption. Engineers are exploring new rotor designs, propulsion systems and noise-dampening materials to make drones less intrusive, a challenge that matters for delivery services, inspections and other uses where noise complaints could limit operations.

Why now: Drone noise is becoming a practical barrier as drones move into everyday commercial use, prompting fresh engineering attention.

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• 'An annoying buzz': The search for stealthier drones · BBC

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