The image shows the Pratt & Whitney R-4360 Wasp Major, a turbo supercharged radial engine used in some of the most powerful piston-engine aircraft during the late World War II and post-war era. This air-cooled, 28-cylinder engine was known for its complexity and power, featuring a four-row radial configuration. It was used in aircraft like the Boeing B-50 Superfortress and the Hughes H-4 Hercules. The R-4360 represented the pinnacle of piston-engine technology before the widespread adoption of jet engines