jsbsim.js/JSBSim/scripts/c172_elevator_doublet.xml

JSBSim flight dynamics model ported to JavaScript

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="http://jsbsim.sourceforge.net/JSBSimScript.xsl"?>
<runscript xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="http://jsbsim.sf.net/JSBSimScript.xsd"
    name="C172 elevator doublet">
  <!--
    This run is for testing the C172 at altitude with an elevator doublet applied
  -->

  <use aircraft="c172x" initialize="elevator_doublet_init"/>
  <run start="0.0" end="40" dt="0.0083333">

    <property> simulation/notify-time-trigger </property>
    <property value="1"> simulation/run_id </property>

<!--
      For "do_simple_trim" (Classic trim):
      0: Longitudinal
      1: Full
      2: Ground
      3: Pullup
      4: Custom
      5: Turn
      6: None
-->
    <event name="Trim">
      <description>Trim at the initial conditions state</description>
      <condition>
        simulation/sim-time-sec gt 1.0
      </condition>
      <set name="simulation/do_simple_trim" value="1"/>
      <notify>
        <property>velocities/vc-kts</property>
        <property>velocities/vt-fps</property>
        <property>attitude/phi-rad</property>
        <property>attitude/theta-rad</property>
        <property>attitude/psi-rad</property>
      </notify>
    </event>

    <event name="Elevator doublet" continuous="true">
      <description> Do an elevator doublet from between
                    5 and 7 seconds. </description>
      <condition>
        simulation/sim-time-sec ge 5
        simulation/sim-time-sec le 7
      </condition>
      <set name="fcs/elevator-cmd-norm">
        <function>
          <sin>
            <product>
              <difference>
                <property> simulation/sim-time-sec </property>
                <value> 5 </value>
              </difference>
              <value> 3.1415927 </value>
            </product>
          </sin>
        </function>
      </set>
      <notify>
        <property>velocities/vc-kts</property>
        <property>velocities/vt-fps</property>
        <property>attitude/phi-rad</property>
        <property>attitude/theta-rad</property>
        <property>attitude/psi-rad</property>
      </notify>
    </event>

    <event name="Re-Trim at 20 seconds">
      <description>Trim at the initial conditions state</description>
      <condition>
        simulation/sim-time-sec gt 20.0
      </condition>
      <set name="simulation/do_simple_trim" value="1"/>
      <notify>
        <property>velocities/vc-kts</property>
        <property>velocities/vt-fps</property>
        <property>attitude/phi-rad</property>
        <property>attitude/theta-rad</property>
        <property>attitude/psi-rad</property>
      </notify>
    </event>

    <event name="Aileron doublet" continuous="true">
      <description>
        Do an elevator doublet from between
        25 and 27 seconds.
      </description>
      <condition>
        simulation/sim-time-sec ge 25
        simulation/sim-time-sec le 27
      </condition>
      <set name="fcs/aileron-cmd-norm">
        <function>
          <sin>
            <product>
              <difference>
                <property> simulation/sim-time-sec </property>
                <value> 25 </value>
              </difference>
              <value> 3.1415927 </value>
            </product>
          </sin>
        </function>
      </set>
      <notify>
        <property>velocities/vc-kts</property>
        <property>velocities/vt-fps</property>
        <property>attitude/phi-rad</property>
        <property>attitude/theta-rad</property>
        <property>attitude/psi-rad</property>
      </notify>
    </event>

  </run>
</runscript>