kilo delta
Charter Member 2015
Lots of military fuel-to-noise-converters already mentioned.
But what about the BAC 1-11?
When I was a kid, standing at the fence of Berlin-Tempelhof airport, it seemed to me the loudest thing ever imaginable!
You could almost hear them still when they were landing at Hannover half an hour later...
Cheers,
Markus.
Funny you should mention the 1-11. Many years ago Ryanair were equipped with Romanian built BAC 1-11's. One performed at a local airshow where the pilot did some fast and very low passes along the runway. As I knew the organisers of the show very well I managed to blag my way over to the runway edge to take some pics. I'll never forget the sound of those engines at full pelt less than 100ft over my head. Lost the pictures several years ago....but I'll always have the memories.