[Boomerang]

Kenneth:

I'll firstly state that the technical content of this discussion is well beyond what I can contribute to.

That said, Heinz Nowarra's Focke-Wulf Fw 190 & Ta 152 (ISBN 0-85429-695-6) includes a dedicated chapter The High Altitude Fighter - a Failure. The theme of this chapter is the failed efforts to develop a satisfactory turbo-supercharged engine for the Fw 190 airframe, consistent with earlier discussions in the thread

Examples: The shortage of raw materials in Germany meant it was not possible to produce a suitable heat-resistant alloy.....The problems experienced by the Germans with turbo-superchargers were not overcome before the war had ended

The Fw 190C-1 high altitude fighter version would probably have been an excellent aircraft.....but...it failed because it proved impossible to manufacture a reliable turbo-supercharger system. THe HMZ turbo-supercharger 9-2281 produced by Hirth kept burning out.

FYI

Don W