--- Andy Ross <[EMAIL PROTECTED]> wrote:
> Luca Masera wrote:
> > about YASim: in which units is measured the oil pressure?
> > In JSBSim the value is holded by "oil-pressure-psi" and it's
> > measured in psi; in YASim is holded by "epr" but the units
> > are missing.
> 
> Er, that's an Engine Pressure Ratio , which is a thrust metric used
> in
> early jets in lieu of N1 RPM. 

FWIW, P&W still prefers EPR over N1.

> YASim doesn't model oil pressure right
> now, because I'm not aware of a good basis on which to do so.  If you
> have numbers you want to match for this particular aircraft, I could
> write you up some Nasal in just a few minutes which would do the job.
> But the idea behind YASim is to produce plausible results for all
> possible engines; oil pressure is one of those values that is (AFAIK)
> just too engine-specific.
> 
> The units are missing, btw, because there aren't any.  It's a ratio.
> 
> Andy
> 
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> 



        
                
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