[Flightgear-devel] Adding 747 spoilers

[John W. <ca...@mm...>]

Something I don't understand about the aircraft .xml files for JSBSim.

Have been able to edit/modify/add engine properties, tanks, etc for the 
basic 747-100

Added the following to create some drag in the DRAG axis section (will 
worry about lift later)

>   <COEFFICIENT NAME="CDsp" TYPE="VALUE">
>        Drag_due_to_spoilers
>        aero/qbar-psf|metrics/Sw-sqft|fcs/spoiler-pos-norm
>        0.031
>     </COEFFICIENT>

and the program hangs. startup screen msg shows "initializing subsytems".

any suggestions as where to look for the problem...  other files that 
need to be modified.
Looking at the other models, 737 in particular, can't seem to discern 
why this should not work.

Regards
John W