Re: [Jsbsim-devel] Question about CFM56-5 model

[Ron J. <wi...@je...>]

Hi Antoine,

I was interested enough in the question to buy a used copy of "Aircraft Engine 
Design" by Mattingly and Heiser...  Could you point me to the "simple model" 
you're referring to, since the book is rather large. :)

I may try to work my way through it, but time is rather limited...

Thanks,

Ron

On Tuesday 28 July 2015 03:26:41 antoine drouin wrote:
> I have been playing with the A320 model and looking a little closer at
> the engine model.
> I have plotted the thrust for different points of the flight domain (
> http://poinix.org/teaching/jsbsim/images/JSBSim_CFM56_5_thrust.png )
> and I am surprised by the results, in particular by the monotony of
> thrust with respect to velocity: there is a region ( between 150 and
> 300m/s ) where thrust is increasing with velocity. This seems counter
> intuitive to me and also not coherent with simpler models that i have
> used in the past ( by comparison, here is a plot of a simple model
> from the book "Aircraft Engine Design" by Mattingly and Heiser ).
> What do you guys think about it?
>
> Thanks in advance for your comments
>
> Poine