Rockets are some of the loudest things that humans can experience, the Saturn V generated more power than entire US electric grid and converted about 1% of that into sound! There's a very distinctive crackle in the sound of a rocket which is a result of turbulence in the shear layer between the exhaust and the external atmosphere. I try to explain and visualize this using recordings of rocket launches and CFD simulations of jets.

Thumbnail by Trevor Mahlmann
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Justin Foley, Benny Burtt, and Jason Achilles
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Kent Gee pointed out that two of the diagrams came from his excellent article on the subject:
https://acousticstoday.org/the-sound-...

Jack Beyer
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John Kraus
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