Re: [Jsbsim-users] Taildragger control on ground.

[Alan T. <ajt...@v-...>]

The forces due to a side-slipping wheel will always work in the same 
direction. It may be a matter of checking the sign of the resultant yaw 
moments .

For a nose gear aircraft, the U/C is behing the CG, for a tail dragger 
it is in front. A small error in axis position would cause this kind of 
error. My understanding is that JSBSim works internally using the CG as 
the axis for rotations and moments. However the CG is often a matter of 
a few inches/cm from the main gear.

I get lost in 3D when I try to read this section of JSBSim code. ;)

Alan