AIRCRAFT AUDIO
Dear HIW, Why is the noise from small aeroplanes so loud? Stephen Conn
Though small planes can have smaller engines, noise from them is loud because they function in the same way. The engines work by sucking in air through a fan. It’s compressed to increase the pressure, which helps increase the fuel combustion rate. After combustion, the air is released at high speeds. This causes loud pressure waves to form in the air. As planes are insulated and airtight, air inside isn’t impacted like the air outside. While you can still hear the mechanical sounds of the engine from inside, noises caused by air turbulence are much less noticeable.