On August 19, 2010 08:32:50 pm Jon S. Berndt wrote:
> 
> Look at the aircraft config file. The functions in that section define
> forces and moments. If you know the non-dimensionalizing parameters, you
>  can extract the derivatives.
> 
> What is it that you need from the engine?
> 
> Jon

Hello Jon,

I found table entries such as "aero/coefficient/CDalpha".  I'm guessing those 
are the non-dimensional derivatives?

As for the (turbofan) engine, I would like to know how JSBsim calculate 
thrusts at different altitude and airspeed based on the entries in the engine 
config file.

Ampere

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