I would like to try my first steps in SITL. I managed to compile and fly the test plane some rounds.
Now I would like to use a different airplane and simulate a fast jet, just to see how ardupilot handles it.
I created a new model and engine with the jbsim form  and stored it in …/Tools/autotest/aircraft/jet.xml
then I started SITL with
sim_vehicle.py --console --map --aircraft test
There are no warnings in command line but how can I say the correct airframe is used?