Andy wrote

> 
> Vivian Meazza wrote:
> > However, eng-power should be the un-supercharged max power, so I 
> > reduced eng-power value,
> 
> No no, I was wrong.  Use the superchared value, the eng-power 
> gets corrected before solving to assume "max" sea level 
> manifold density (i.e. with boost and wastegate applied).
> 
> > Is it possible that "reduction gearing" reduces engine revs for a 
> > given propeller rpm? I thought it was the other way around.
> 
> You are correct.  The gear-ratio value is multiplied by the 
> engine RPM to get the propeller RPM.  Typical PSRUs will have 
> a value less than 1.0.
> 
> Andy
> 

OK, I'll try again, this time with the supercharged power figures. Thank
goodness - they are the only good power values available!

Vivian



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