With the recent adding of X-Plane as simulation backend in the SITL functionalities of ArduPilot (http://ardupilot.org/dev/docs/sitl-with-xplane.html), I felt useful to design some UAV models.
Here are two different models with their Mission Planner parameters joined.
The first one is a plane UAV, based on the FX-61 Phantom.
As it is hand-launched it should be started in "final approach" in x-plane but then it can well be used with mission planner or manually. I use a RC controller and it really feel real.
The second one is a 3m span tactical drone, based on the Penguin (from uavfactory).
Due to its glider capacities it tends to oscillate in pitch after rapid command but it stabilizes itself with time.
I have had a test mission path with an example of take-off and landing on runway (SUAA airport).
Feel free to comment or propose improvement on the models.