How to remove the flight control system

[memy009]

Hello everyone, I want to make the control for a 737 (flight control for the horizontal part) and I want to retrieve the status of the uncontrolled system. I know that under JSBSim, the flight controlers are already implemented and so I wanted to know if any of you know how to remove the autopilot. THANKS .

[seanmcleod]

The 737 model in the JSBSim repo has no autopilot or any sort of FBW FCS with command laws etc. Take a look at the FCS section of the 737 model.

[memy009]

Ok, thank U.

[memy009]

So these are not an implementation of a controlleur ???

<flight_control name="FCS: 737">

    <channel name="Pitch">



        <summer name="Pitch Trim Sum">

            <input>fcs/elevator-cmd-norm</input>

            <input>fcs/pitch-trim-cmd-norm</input>

            <clipto>

                <min>-1</min>

                <max> 1</max>

            </clipto>

        </summer>



        <aerosurface_scale name="Elevator Control">

            <input>fcs/pitch-trim-sum</input>

            <range>

                <min>-0.3</min>

                <max> 0.3</max>

            </range>

            <output>fcs/elevator-pos-rad</output>

        </aerosurface_scale>



        <aerosurface_scale name="Elevator Normalized">

            <input>fcs/elevator-pos-rad</input>

            <domain>

                <min>-0.3</min>

                <max> 0.3</max>

            </domain>

            <range>

                <min>-1</min>

                <max> 1</max>

            </range>

            <output>fcs/elevator-pos-norm</output>

        </aerosurface_scale>



    </channel>

    <channel name="Roll">



        <summer name="Roll Trim Sum">

            <input>fcs/aileron-cmd-norm</input>

            <input>fcs/roll-trim-cmd-norm</input>

            <clipto>

                <min>-1</min>

                <max> 1</max>

            </clipto>

        </summer>



        <aerosurface_scale name="Left Aileron Control">

            <input>fcs/roll-trim-sum</input>

            <range>

                <min>-0.35</min>

                <max> 0.35</max>

            </range>

            <output>fcs/left-aileron-pos-rad</output>

        </aerosurface_scale>



        <aerosurface_scale name="Right Aileron Control">

            <input>-fcs/roll-trim-sum</input>

            <range>

                <min>-0.35</min>

                <max> 0.35</max>

            </range>

            <output>fcs/right-aileron-pos-rad</output>

        </aerosurface_scale>



        <aerosurface_scale name="Left aileron Normalized">

            <input>fcs/left-aileron-pos-rad</input>

            <domain>

                <min>-0.35</min>

                <max> 0.35</max>

            </domain>

            <range>

                <min>-1</min>

                <max> 1</max>

            </range>

            <output>fcs/left-aileron-pos-norm</output>

        </aerosurface_scale>

[seanmcleod]

You asked:

how to remove the autopilot.

I said:

The 737 model in the JSBSim repo has no autopilot or any sort of FBW FCS with command laws etc.

Do you see any implementation of an autopilot or FBW FCS in the 737's FCS section?

It's purely a direct pilot input control system. The pilot inputs their input via fcs/elevator-cmd-norm and fcs/pitch-trim-cmd-norm which are in the range [-1, +1] and which are then simply scaled to an angular deflection of between [-0.3, +0.3] radians, using the longitudinal input to elevator position as an example. The same applies for the lateral and directional inputs.

[memy009]

Endeed, I don't see them ... But I don't understand what did the snapshots means so I asked ... Thank's for the naswer !!!