Re: [Flightgear-devel] Extracting stability derivatives in JSBsim/Yasim

2010-08-24 Thread John Wojnaroski
On Mon, 2010-08-23 at 23:16 -0600, Ron Jensen wrote: > On Monday 23 August 2010 21:37:06 Ampere K. wrote: > > > Thank you very much Jon and Ron. That certainly cleared things up for me. > > You're welcome > > > I only have one question left, which is my original question regarding > > turbofan

Re: [Flightgear-devel] Extracting stability derivatives in JSBsim/Yasim

2010-08-21 Thread Jon S. Berndt
> Now I am getting confused. I need an example. > > Say if I have the following entry: > > Drag_at_zero_lift > > aero/qbar-psf > metrics/Sw-sqft > 0.016 > > > >

Re: [Flightgear-devel] Extracting stability derivatives in JSBsim/Yasim

2010-08-19 Thread Prof. K.Venkata Rao
] Extracting stability derivatives in JSBsim/Yasim Hello all, How would I go about extracting the stability derivatives from the FDM in JSBsim and Yasim?  I would also like to extract the stability derivatives from the engine model. Ampere

Re: [Flightgear-devel] Extracting stability derivatives in JSBsim/Yasim

2010-08-19 Thread Jon S. Berndt
> Hello Jon, > > I found table entries such as "aero/coefficient/CDalpha". I'm guessing > those are the non-dimensional derivatives? Ampere, The property names starting with "aero/coefficient" are actually misleading. Historically, they really were coefficients. Now, however, the functions in t

Re: [Flightgear-devel] Extracting stability derivatives in JSBsim/Yasim

2010-08-19 Thread Ampere K.
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 J

Re: [Flightgear-devel] Extracting stability derivatives in JSBsim/Yasim

2010-08-19 Thread Jon S. Berndt
> Hello all, > > How would I go about extracting the stability derivatives from the FDM > in > JSBsim and Yasim? I would also like to extract the stability > derivatives from > the engine model. > > > Ampere Look at the aircraft config file. The functions in that section define forces and mome

[Flightgear-devel] Extracting stability derivatives in JSBsim/Yasim

2010-08-19 Thread Ampere K.
Hello all, How would I go about extracting the stability derivatives from the FDM in JSBsim and Yasim? I would also like to extract the stability derivatives from the engine model. Ampere -- This SF.net email is spon