Science & Tech · Gadgets & EVs · 3 hrs ago

Drone deliveries are growing, raising concerns about noise

Drone deliveries are growing, raising concerns about noise

Companies including Amazon and Walmart are expanding drone deliveries, bringing the aircraft more often over homes in the US and parts of England.

Amazon Prime Air is expanding toward nearly 500 US cities and towns, and has started serving customers in and around Darlington.

Residents can find the sudden rotor noise intrusive, especially because drones fly low and may pass directly over homes.

Researchers say people may be more sensitive to a sound when it is new, frequent or unwelcome.

More deliveries could bring more noise complaints as the services expand, while the US Federal Aviation Administration says operators and local leaders are mainly responsible for addressing concerns.

London startup Greenjets says its system can cut drone noise by at least two thirds by enclosing the blades, slowing them and reducing vibration.

Its technology has also been used by police and harbour security teams in Germany and by conservationists in Africa, while quieter drones may also help military operators avoid detection.

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What people are saying

Antonio Torija Martinezprofessor in acoustic engineering and psychoacoustics at the University of Salford
particularly noticeable, even when overall sound levels are relatively low
via BBC
as the drone sector expands, more and more of these complaints will happen
via BBC
Darren Jamesfuture technologies lead at Greenjets
noise level and the frequency of that noise
via BBC
Robert Tollastresearch fellow at the Royal United Services Institute
Make it faster, not less quiet, seems to be the approach
via BBC