Re: [Jsbsim-devel] Wings-leveled flight [was "Roll and crash" and "New capabilities"]

[Fabian G. <fab...@gm...>]

>
> Besides Y-force You should have also set to zero the following sources
> of lateral-directional motions: roll, yaw, P_factor (make sure also
> thrust is symmetrical).
> If you have all those contribution constantly zero the you end up with
> a 3DOF motion.


I tried that; there are still crazy, sudden bank to bank rolls (in less than
one second), inmediately after the aircraft get airborne.
The output shows all CY, CN,and Cl (roll) components are zero, as well as
PFactor Pitch and PFactor Yaw, Roll trim Sum, Yaw trim Sum, left and right
aileron positions, and rudder position.
It seems an explicit flag is needed to tell the solver to do a 3DOF sim.
Fabian