jsbsim.js
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JSBSim flight dynamics model ported to JavaScript
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text/xml
<fdm_config name="BALL" version="2.0" release="BETA"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="http://jsbsim.sourceforge.net/JSBSim.xsd">
<fileheader>
<author> Jon Berndt </author>
<filecreationdate> 2004-06-01 </filecreationdate>
<version> Version 1.0 </version>
<description> Test file </description>
</fileheader>
<metrics>
<wingarea unit="FT2"> 1 </wingarea>
<wingspan unit="FT"> 1 </wingspan>
<chord unit="FT"> 1 </chord>
<htailarea unit="FT2"> 0 </htailarea>
<htailarm unit="FT"> 0 </htailarm>
<vtailarea unit="FT2"> 0 </vtailarea>
<vtailarm unit="FT"> 0 </vtailarm>
<location name="AERORP" unit="IN">
<x> 0 </x>
<y> 0 </y>
<z> 0 </z>
</location>
<location name="EYEPOINT" unit="IN">
<x> 0 </x>
<y> 0 </y>
<z> 0 </z>
</location>
<location name="VRP" unit="IN">
<x> 0 </x>
<y> 0 </y>
<z> 0 </z>
</location>
</metrics>
<mass_balance>
<ixx unit="SLUG*FT2"> 20 </ixx>
<iyy unit="SLUG*FT2"> 10 </iyy>
<izz unit="SLUG*FT2"> 10 </izz>
<ixy unit="SLUG*FT2"> -0 </ixy>
<ixz unit="SLUG*FT2"> -0 </ixz>
<iyz unit="SLUG*FT2"> -0 </iyz>
<emptywt unit="LBS"> 50 </emptywt>
<location name="CG" unit="IN">
<x> 0 </x>
<y> 0 </y>
<z> 0 </z>
</location>
</mass_balance>
<ground_reactions>
<contact type="BOGEY" name="CONTACT">
<location unit="IN">
<x> 0 </x>
<y> 0 </y>
<z> 0 </z>
</location>
<static_friction> 0 </static_friction>
<dynamic_friction> 0 </dynamic_friction>
<rolling_friction> 0 </rolling_friction>
<spring_coeff unit="LBS/FT"> 10000 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 200000 </damping_coeff>
<max_steer unit="DEG"> 0.0 </max_steer>
<brake_group> NONE </brake_group>
<retractable>0</retractable>
</contact>
</ground_reactions>
<external_reactions>
<!-- "Declare" the reefing term -->
<property>fcs/parachute_reef_pos_norm</property>
<force name="parachute" frame="WIND">
<function>
<product>
<property>aero/qbar-psf</property>
<property>fcs/parachute_reef_pos_norm</property>
<value> 1.0 </value> <!-- Full drag coefficient -->
<value> 20.0 </value> <!-- Full parachute area -->
</product>
</function>
<!-- The location below is in structural frame (x positive
aft), so this location describes a point 1 foot aft
of the origin. In this case, the origin is the center. -->
<location unit="FT">
<x>1</x>
<y>0</y>
<z>0</z>
</location>
<!-- The direction describes a unit vector. In this case, since
the selected frame is the WIND frame, the "-1" x component
describes a direction exactly opposite of the direction
into the wind vector. That is, the direction specified below
is the direction that the drag force acts in. -->
<direction>
<x>-1</x>
<y>0</y>
<z>0</z>
</direction>
</force>
</external_reactions>
<propulsion/>
<flight_control name="FGFCS"/>
<aerodynamics>
<axis name="DRAG">
<function name="aero/coefficient/CD">
<description>Drag</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<value>0.000</value>
</product>
</function>
</axis>
</aerodynamics>
<output name="BallOut.csv" type="CSV" rate="0.001">
<rates> ON </rates>
<velocities> ON </velocities>
<forces> ON </forces>
<moments> ON </moments>
<position> ON </position>
</output>
</fdm_config>