Question: What is your favourite engine sound?

Sarah Hunt answered on 15 Nov 2016:

Engine sound? Hmmm, sounds are just vibrations that pass through the air different frequencies. I used to work beside a building where they tested jet engines and there was very low frequency vibrations that came through the building (the engines make quite a lot of noise in the test). The vibrations would make the mug on my desk move around and make ripples in my hot tea, just like in Jurassic park!