Researchers at Cranfield University, near London, have launched a study into the noise impact of drone aircraft. The research will be based on flight tests to measure not only the volume of noise but also the frequency of sound caused by remotely controlled Unmanned Aerial Vehicles (UAVs) during flight. This will allow data to be collected to build a noise pollution model that will help set standards.

The research is being carried out at Cranfield Airport, in collaboration with sound specialists and drone companies. In addition, the research is being monitored by the UK Civil Aviation Authority (CAA) noise and environment officers. The noise measurement tests will be carried out using small and medium-sized commercial multi-rotor drones, which will fly a variety of flight paths defined by the researchers.

According to the partial results of the first tests, aircraft at altitudes of 100 feet emit noise of between 50 and 60 decibels, similar to the sound levels normally found in an office or restaurant. This data will help shape the urban soundscape of the future. Indeed, the UK Department for Transport and the Civil Aviation Authority are constantly examining drone noise, but currently lack high quality data to guide future regulation.