36% is actually not too shabby on the scale of engine efficiencies - the best transport diesels run at 45%. What sort of pressure ratio does (say) an Allison 250 run at? I remember from the dim and distant past that each stage generates something like 1.2 Bar, and there are 10 stages. That gives 12 bar in the combustion chamber...
Mart
Last edited by Graviman; 26th February 2006 at 08:19.