They were called Trumpets of Jericho by the Germans, and there’s examples on Youtube, IIRC and the BBC sound effects recordings. There’s a fair amount of documentation if you do a reasonable search – certainly I turfed up a lot when researching the Stuka pilot role of Aeroplane’s Aircrew feature.

I have mentioned this on a couple of previous threads but with no response so I thought i’d try it on a thread of its own.

Has anyone tried putting the siren from a Stuka on a modern day plane and put it in a dive to see what it really sounded like? Could be a good demo at an airshow.

At the 2007 Omaka Classic Fighters they had an example of the famous Junkal Stukost (sometimes known as the Percival Provost) which mocked the role of the Stuka, IIRC, with a siren. A ‘proper’ Stuka dive might be quite hard to imitate at a show, starting and ending at what would seem like great heights.

Unfortunately imaginative innovation at shows is both awkward and sometimes expensive, so less tried than it might be.

HTH.