Michael Selig writes:

 > The point - are plans underway to have JSBSim include nonlinear
 > aero data via path/filename, rather than including all that
 > nonlinear data in the single xml file?

Jon is still waiting on me to put together a thin (but conformant) XML
parser for JSBSim, probably a stripped-down version of Expat.  Right
now, Jon's just using a sort-of-XML-like lexical scanner that's easily
confused.  There probably won't be any progress on external inclusions
until a general config-file overhaul, but I'd think it would be a high
priority.

 > Also, does JSBSim accept aero data in the body axes as well as the
 > stability axes?

I'm not sure, but I think it doesn't.  Jon or Tony will have to
provide more information.

 > Can JSBSim do 3D interpolation for, say, data as a function of angle of 
 > attack, sideslip and flaps?  We have this in our Twin Otter setup, for example
 >      276 CYfabetaf0.dat
 >      276 CYfabetaf20.dat
 >      276 CYfabetaf40.dat
 > decodes to
 > CY as a function of alfa, beta & 0, 20, and 40 deg flap (fabeta + f0/20/40)

I'm fairly certain that JSBSim allows a maximum of two dimensions, but
I might be wrong.  Jon and Tony have talked about extending it to
allow n-dimensional tables.  It might be necessary to try to uncouple
some of the data for now, though.


All the best,


David

-- 
David Megginson
[EMAIL PROTECTED]

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