I'd really like to hear Oggers explain how ignition timing, or valve timing, or mixtures, or flame fronts, or pumping losses, or any other of his false arguments explain why a high compression turbine engine is more efficient than a low compression turbine.
Slippery_pete: please don't do this to yourself. You know full well that all of those things were being discussed in the context of the piston engine. Anyone who reviewed our exchange could see that - the clue is in the liberal use of the terms 'crank', 'piston', and 'cylinder', including in
your first post where this started
aerobat77: thanks for the link to that paper. There won't be any surprises in there for those who've been schooled in piston engine theory and it's a useful case study for those that might be interested.
Specifically on the point of exhaust temperature there is no surprise that it dropped as compression rose: this is not in dispute.