jsbsim.js/JSBSim/systems/GNCUtilities.xml

JSBSim flight dynamics model ported to JavaScript

<?xml version="1.0"?>
<system name="GNC Utilities"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="http://jsbsim.sourceforge.net/JSBSimSystem.xsd">

<!-- #######################################################################

  Author:   Jon Berndt
  Date:     January 2009
            June 20 2013 (update)
  Function: Calculates useful GNC values

  Inputs: 
    position/lat-gc-rad (geocentric latitude in radians)
    position/long-gc-rad (longitude in radians)

    [Declared Interface Parameters]
    guidance/target_wp_latitude_rad
    guidance/target_wp_longitude_rad

  Outputs
    guidance/wp-distance (feet)
    guidance/wp-heading-rad (rad)
    guidance/wp-heading-deg (deg)

######################################################################## -->

  <property> guidance/target_wp_latitude_rad </property>
  <property> guidance/target_wp_longitude_rad </property>

  <channel name="Guidance Waypoint Heading Director">

    <waypoint_heading name="guidance/wp-heading-rad" unit="RAD">
      <target_latitude unit="RAD">  guidance/target_wp_latitude_rad </target_latitude>
      <target_longitude unit="RAD"> guidance/target_wp_longitude_rad </target_longitude>
      <source_latitude unit="RAD">  position/lat-gc-rad </source_latitude>
      <source_longitude unit="RAD"> position/long-gc-rad </source_longitude>
    </waypoint_heading>

    <waypoint_distance name="guidance/wp-distance" unit="FT">
      <target_latitude unit="RAD">  guidance/target_wp_latitude_rad </target_latitude>
      <target_longitude unit="RAD"> guidance/target_wp_longitude_rad </target_longitude>
      <source_latitude unit="RAD">  position/lat-gc-rad </source_latitude>
      <source_longitude unit="RAD"> position/long-gc-rad </source_longitude>
    </waypoint_distance>

    <pure_gain name="guidance/wp-heading-deg">
      <input> guidance/wp-heading-rad </input>
      <gain> 57.3 </gain>
    </pure_gain>

  </channel>

<!-- ####################################################################### -->

  <property> navigation/actual-heading-rad </property>
  <property> guidance/specified-heading-rad </property>
  <property> guidance/heading-selector-switch </property>

  <channel name="Included Angle to Heading">

    <switch name="guidance/selected_target_heading">
      <default value="guidance/wp-heading-rad"/>
      <test value="guidance/specified-heading-rad">
        guidance/heading-selector-switch eq 1
      </test>
    </switch>

    <angle name="guidance/angle-to-heading-rad" unit="RAD">
      <source_angle unit="RAD">  navigation/actual-heading-rad </source_angle>
      <target_angle unit="RAD">  guidance/selected_target_heading </target_angle>
    </angle>

  </channel>

<!-- ####################################################################### -->

</system>