The A-10 Thunderbolt II is basically built around the GAU-8 Avenger, a 30-mm hydraulically driven seven-barrel Gatling-type cannon.

The GAU-8/A Avenger Gatling gun next to a VW Type 1.
US Air Force photo

Wanna know whats behind the trademark BRTTTTT noise of the A-10 Warthogs GAU-8/A ...

https://www.businessinsider.com/how-the-a10-warthog-gau8-gatling-gun-really-works-2021-5

#Insider