Pre-mixed inputs to fcs

[marcelofcruz]

Hello Team, I am creating a model to integrate with my flight controller SITL, which already mixes the inputs and outputs the actuator commands directly. To give an example, instead of having fcs/aileron-cmd-norm as the "pilot" input to be mapped to the control surface, I would like to have something like fcs/right-elevon-cmd-norm.

I tried implementing exactly that in a simple fcs but I get "Property fcs/elevon-right-cmd-norm does not exist" error. Is it possible to define such property?

<summer name= "fcs/right-elevon-norm">
                <input>fcs/elevon-right-cmd-norm</input>
                <input>fcs/elevon-right-trim-cmd-norm</input>
                <clipto>
                    <min>-1.0</min>
                    <max>1.0</max>
                </clipto>
 </summer>

Thank you!

[seanmcleod70]

Try declaring them, e.g.

jsbsim/aircraft/f16/f16.xml

Lines 311 to 315 in f794e04

	<!-- Declare some interface properties -->
	<property>fcs/alpha-norm</property>
	<property>fcs/hook-engage</property>
	<property>fcs/canopy-engage</property>
	<property>fcs/fbw-override</property>

[marcelofcruz]

It works! I was sure I had tried that last night at 3 am.... 🤷
Thanks!