Re: [Jsbsim-users] Problem in trimming the aircraft

[<ajt...@v-...>]

I came across this problem only a couple of weeks ago.

What I found was that there were problems with JSBSim trim some years 
ago, and at the moment only "*do_simple_trim*" works.

See https://github.com/JSBSim-Team/jsbsim/discussions/840 for more details.

Alan

*
*

Alan

On 09/04/2024 18:39, Hornet wrote:
> Hi friends, I am a flight dynamics student, I am new to jsbsim as 
> well. I am trying to simulate a trim maneuver. I have run jsbsim with 
> both the stand trim script file for the 737 aircraft and also tried 
> the tutorial by  Bill Galbraith, I see that there is a step change in 
> output . Please kindly see the plots. I don't  see any  gradual 
> trimming. like the plots given in  Bill Galbraith's tutorial document,
>
> Attached files  are
> Altitude vs time plot for Bill Galbraith tutorial case :
> Theta Vs time plot for 737 with the 737_cruise.xml script file .
>
> Please kindly help , I would like to reproduce the results in Bill 
> Galbraith's tutorial and then do similar runs of the 737 aircraft
> Please also kindly guide me and correct me if I am doing something wrong.
> I have made no changes to any of the default xml script or aircraft 
> xml files
>
> Sincere Thanks,
> Regards
> Shree .
>
>
>
>
>
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