dave perry wrote:
> Hi All,
>
> Would anyone object to setting all the turbulence values in 
> Preferences.xml to 0.0 for this release?
>
> Even the small values set by Preferences.xml cause increasing 
> oscillations for most JSBSim autopilots in APR mode because the 500 ft. 
> agl boundary turbulence is 0.1.  This is true for  the c172p with the 
> kap140 autopilot and the SenecaI with the AltimaticIIIc autopilot.  
> Setting turbulence = 0.0 from fgrun will not zero these values.  Using 
> --turbulence=0.0 on the command line will result in all the turbulence 
> values being zero.
>
> -Dave Perry
>
>
>   
Dave -

Input from a humble user. I can confirm this on the cvs OSG version. 
Interestingly, the turbulence sliders in the "weather conditions" window 
of the gui all show no turb but only the command line invocation 
--turbulence=0.0 seems to actually set it to zero (--turbulence=0.0 set 
in the ~/.fgfsrc file does not do it).

Although I like realistic flight my ILS approaches we very unstable with 
the turb values given in the Preferences.xml file when near the approach 
end of the runway.



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