On Mon, 2011-03-28 at 13:53 +0700, Harry Campigli wrote:
>
> I have searched high and low in aircraft xml,s and the property tree
> for the linkage definition between the rudder pedals and the steering
> in JBsim with a view to interfacing a ground nose wheel steering
> system.
>
> But I cant find it any where except in Yasim models?
I just use either surface-positions/rudder-pos-norm or
gear/gear[0]/steering-norm to animate the nose gear steering since they
are interconnected for most cases anyway.
For a more fancy steering behavior (for example less steering at higher
speeds) you can add a steering channel to toe configuration files like
this:
<channel name="Landing Gear">
<switch name="fcs/gear-wow">
<default value="0"/>
<test logic="AND" value="1">
gear/unit[1]/WOW eq 1
gear/unit[2]/WOW eq 1
</test>
</switch>
<kinematic name="fcs/gear-control">
<input>gear/gear-cmd-norm</input>
<traverse>
<setting>
<position>0</position>
<time>0</time>
</setting>
<setting>
<position>1</position>
<time>5</time>
</setting>
</traverse>
<output>gear/gear-pos-norm</output>
</kinematic>
<scheduled_gain name="fcs/scheduled-steer-pos-deg">
<input>fcs/steer-cmd-norm</input>
<table>
<independentVar>velocities/vg-fps</independentVar>
<tableData>
10.0 80.0
50.0 15.0
150.0 2.0
</tableData>
</table>
<output>fcs/steer-pos-deg</output>
</scheduled_gain>
</channel>
Erik
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