9. Interlude

In Chapters 4 to 8, the main issues encountered in the development of the centrifugal superchargers were considered. Many topics had to be ignored in order to focus exclusively on the state-of-the-art (Authors’ Note: in 1947). Specifically, the two issues of intercooling and boost pressure control were not covered in requisite depth, except where they affected the thermodynamics of the compressor operation itself.