The noise produced by jet engines is well known, and its impact on our health is well understood. Efforts are ongoing to reduce noise output from these engines. However, as we transition to a new era of aerial transportation powered by cleaner energy sources, the associated engine technology has also been developed to ensure that this revolution is quieter.
At the outset, electric engines come across as much quieter counterparts of the jet engine. While this is partly true, the noise produced by an electric engine is produced at different frequencies from their jet engine counterparts, which makes it sound quieter.