jsbsim.js
Version:
JSBSim flight dynamics model ported to JavaScript
719 lines (677 loc) • 29.5 kB
text/xml
<fdm_config name="North American X-15" 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> 1998-07-01 </filecreationdate>
<version> $Revision: 1.59 $ </version>
<description> Models the X-15 hypersonic research aircraft </description>
<reference refID="NASA-TN-D-6208" author="Anonymous" title="EXPERIENCE WITH THE X-15 ADAPTIVE FLIGHT CONTROL SYSTEM" date="March 1971"/>
<reference refID="NASA-TN-D-2532" author="Roxanah B. Yancey" title="Flight Measurements of Stability and Control Derivatives of the X-15 Research Airplane to a Mach Number of 6.02 and an Angle of Attack of 25 degrees" date="1964"/>
<note>
This model was created using publicly available data, publicly available
technical reports, textbooks, and guesses. It contains no proprietary or
restricted data. If this model has been validated at all, it would be
only to the extent that it seems to "fly right", and that it possibly
complies with published, publicly known, performance data (maximum speed,
endurance, etc.). Thus, this model is meant for educational and entertainment
purposes only.
This simulation model is not endorsed by the manufacturer. This model is not
to be sold.
</note>
</fileheader>
<metrics>
<wingarea unit="FT2"> 200 </wingarea>
<wingspan unit="FT"> 22.36 </wingspan>
<chord unit="FT"> 10.27 </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> 345.4 </x>
<y> 0 </y>
<z> 0 </z>
</location>
<location name="EYEPOINT" unit="IN">
<x> 115.9 </x>
<y> 0 </y>
<z> 26 </z>
</location>
<location name="VRP" unit="IN">
<x> 342.82 </x>
<y> 0 </y>
<z> 0 </z>
</location>
</metrics>
<mass_balance>
<ixx unit="SLUG*FT2"> 3650 </ixx>
<iyy unit="SLUG*FT2"> 80000 </iyy>
<izz unit="SLUG*FT2"> 82000 </izz>
<ixy unit="SLUG*FT2"> 0 </ixy>
<ixz unit="SLUG*FT2"> -590 </ixz>
<iyz unit="SLUG*FT2"> 0 </iyz>
<!-- <emptywt unit="LBS"> 15560 </emptywt> -->
<emptywt unit="LBS"> 14560 </emptywt>
<location name="CG" unit="IN">
<x> 345 </x>
<y> 0 </y>
<z> 0 </z>
</location>
</mass_balance>
<ground_reactions>
<contact type="BOGEY" name="Nose Gear">
<location unit="IN">
<x> 63 </x>
<y> 0 </y>
<z> -48 </z>
</location>
<static_friction> 0.5 </static_friction>
<dynamic_friction> 0.02 </dynamic_friction>
<rolling_friction> 0.02 </rolling_friction>
<spring_coeff unit="LBS/FT"> 18000 </spring_coeff>
<damping_coeff unit="LBS/FT2/SEC2" type="SQUARE"> 40 </damping_coeff>
<damping_coeff_rebound unit="LBS/FT/SEC"> 3000 </damping_coeff_rebound>
<max_steer unit="DEG"> 0.0 </max_steer>
<brake_group> NONE </brake_group>
<retractable>0</retractable>
</contact>
<contact type="BOGEY" name="Left Skid">
<location unit="IN">
<x> 540.6 </x>
<y> -56.8 </y>
<z> -76.6 </z>
</location>
<static_friction> 0.9 </static_friction>
<dynamic_friction> 0.3 </dynamic_friction>
<rolling_friction> 0.3 </rolling_friction>
<spring_coeff unit="LBS/FT"> 50000 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 1500 </damping_coeff>
<damping_coeff_rebound unit="LBS/FT/SEC"> 7500 </damping_coeff_rebound>
<max_steer unit="DEG"> 0.0 </max_steer>
<brake_group> NONE </brake_group>
<retractable>0</retractable>
</contact>
<contact type="BOGEY" name="Right Skid">
<location unit="IN">
<x> 540.6 </x>
<y> 56.8 </y>
<z> -76.6 </z>
</location>
<static_friction> 0.9 </static_friction>
<dynamic_friction> 0.3 </dynamic_friction>
<rolling_friction> 0.3 </rolling_friction>
<spring_coeff unit="LBS/FT"> 50000 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 1500 </damping_coeff>
<damping_coeff_rebound unit="LBS/FT/SEC"> 7500 </damping_coeff_rebound>
<max_steer unit="DEG"> 0.0 </max_steer>
<brake_group> NONE </brake_group>
<retractable>0</retractable>
</contact>
</ground_reactions>
<propulsion>
<engine file="XLR99">
<location unit="IN">
<x> 600 </x>
<y> 0 </y>
<z> 0 </z>
</location>
<orient unit="DEG">
<roll> 0.0 </roll>
<pitch> 0 </pitch>
<yaw> 0 </yaw>
</orient>
<feed>0</feed>
<feed>1</feed>
<thruster file="xlr99_nozzle">
<location unit="IN">
<x> 600 </x>
<y> 0 </y>
<z> 0 </z>
</location>
<orient unit="DEG">
<roll> 0.0 </roll>
<pitch> 0.0 </pitch>
<yaw> 0.0 </yaw>
</orient>
</thruster>
</engine>
<tank type="OXIDIZER"> <!-- Tank number 0 for Main engine -->
<location unit="IN">
<x> 282.3 </x>
<y> 0 </y>
<z> 0 </z>
</location>
<capacity unit="LBS"> 9470 </capacity>
<contents unit="LBS"> 0 </contents>
</tank>
<tank type="FUEL"> <!-- Tank number 1 for Main engine -->
<location unit="IN">
<x> 408.3 </x>
<y> 0 </y>
<z> 0 </z>
</location>
<capacity unit="LBS"> 8236 </capacity>
<contents unit="LBS"> 6 </contents>
</tank>
<tank type="OXIDIZER"> <!-- Tank number 2 for RCS -->
<location unit="IN">
<x> 140 </x>
<y> 0 </y>
<z> 0 </z>
</location>
<capacity unit="LBS"> 12 </capacity>
<contents unit="LBS"> 0 </contents>
</tank>
</propulsion>
<autopilot file="X15ap"/>
<flight_control name="X-15">
<channel name="Pitch">
<summer name="Pitch Trim Sum">
<input>ap/elevator-cmd</input>
<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="Pitch Command Scale">
<input>fcs/pitch-trim-sum</input>
<range>
<min>-50</min>
<max>50</max>
</range>
</aerosurface_scale>
<pure_gain name="Pitch Gain 1">
<input>fcs/pitch-command-scale</input>
<gain>-0.36</gain>
</pure_gain>
<scheduled_gain name="Pitch Scheduled Gain 1">
<input>fcs/pitch-gain-1</input>
<gain>0.017</gain>
<table>
<independentVar>fcs/elevator-pos-rad</independentVar>
<tableData>
-0.68 -26.548
-0.595 -20.513
-0.51 -15.328
-0.425 -10.993
-0.34 -7.508
-0.255 -4.873
-0.17 -3.088
-0.085 -2.153
0 -2.068
0.085 -2.833
0.102 -3.088
0.119 -3.377
0.136 -3.7
0.153 -4.057
0.17 -4.448
0.187 -4.873
0.272 -7.508
0.357 -10.993
0.442 -15.328
0.527 -20.513
0.612 -26.548
0.697 -33.433
</tableData>
</table>
</scheduled_gain>
<pure_gain name="Pitch SAS Feedback">
<input>velocities/q-rad_sec</input>
<gain>0.75</gain>
</pure_gain>
<summer name="Elevator Positioning">
<input>fcs/pitch-scheduled-gain-1</input>
<input>fcs/pitch-sas-feedback</input>
<clipto>
<min>-0.26</min>
<max>0.61</max>
</clipto>
</summer>
<lag_filter name="Elevator Filter">
<input>fcs/elevator-positioning</input>
<c1>600</c1>
<output>fcs/elevator-pos-rad</output>
</lag_filter>
</channel>
<channel name="Roll">
<summer name="Roll Trim Sum">
<input>ap/aileron-cmd</input>
<input>fcs/aileron-cmd-norm</input>
</summer>
<aerosurface_scale name="Roll Command Scale">
<input>fcs/roll-trim-sum</input>
<range>
<min>-20</min>
<max>20</max>
</range>
</aerosurface_scale>
<pure_gain name="Roll Gain 1">
<input>fcs/roll-command-scale</input>
<gain>0.42</gain>
</pure_gain>
<pure_gain name="Roll Gain 2">
<input>fcs/roll-gain-1</input>
<gain>0.027</gain>
</pure_gain>
<pure_gain name="Yaw-Roll Crossover Gain">
<input>velocities/r-rad_sec</input>
<gain>-0.9</gain>
</pure_gain>
<summer name="Yaw Coupled Aileron Feedback Sum">
<input>velocities/p-rad_sec</input>
<input>fcs/yaw-roll-crossover-gain</input>
</summer>
<pure_gain name="Roll SAS Gain">
<input>fcs/yaw-coupled-aileron-feedback-sum</input>
<gain>-0.5</gain>
</pure_gain>
<summer name="Aileron Positioning">
<input>fcs/roll-gain-2</input>
<input>fcs/roll-sas-gain</input>
<clipto>
<min>-0.35</min>
<max>0.35</max>
</clipto>
<output>fcs/left-aileron-pos-rad</output>
</summer>
</channel>
<channel name="Yaw">
<aerosurface_scale name="Yaw Command Scale">
<input>fcs/rudder-cmd-norm</input>
<range>
<min>-250</min>
<max>250</max>
</range>
</aerosurface_scale>
<pure_gain name="Yaw Gain 1">
<input>fcs/yaw-command-scale</input>
<gain>0.082</gain>
</pure_gain>
<pure_gain name="Yaw Gain 2">
<input>fcs/yaw-gain-1</input>
<gain>0.04</gain>
</pure_gain>
<pure_gain name="Yaw SAS Gain">
<input>velocities/r-rad_sec</input>
<gain>0.3</gain>
</pure_gain>
<summer name="Rudder Positioning">
<input>fcs/yaw-gain-2</input>
<input>fcs/yaw-sas-gain</input>
<clipto>
<min>-0.52</min>
<max>0.52</max>
</clipto>
<output>fcs/rudder-pos-rad</output>
</summer>
</channel>
</flight_control>
<aerodynamics>
<axis name="DRAG">
<function name="aero/coefficient/CDmin">
<description>Drag_minimum</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<table>
<independentVar>velocities/mach</independentVar>
<tableData>
0.0000 0.0610
0.1000 0.0610
0.5000 0.0610
0.7000 0.0620
0.8000 0.0650
0.9000 0.0680
0.9900 0.0900
1.0000 0.0900
1.0100 0.0900
1.1000 0.1300
1.2000 0.1200
1.3000 0.1100
1.4000 0.1000
1.5000 0.0930
2.0000 0.0800
3.0000 0.0620
4.0000 0.0480
5.0000 0.0400
6.0000 0.0380
7.0000 0.0370
8.0000 0.0370
9.0000 0.0370
</tableData>
</table>
</product>
</function>
<function name="aero/coefficient/CDi">
<description>Drag_induced</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>aero/cl-squared</property>
<table>
<independentVar>velocities/mach</independentVar>
<tableData>
0.0000 0.2000
0.5000 0.2000
1.0000 0.2300
1.5000 0.4000
2.0000 0.5000
3.0000 0.8000
4.0000 0.9300
5.0000 1.0500
6.0000 1.1500
9.0000 1.3300
</tableData>
</table>
</product>
</function>
</axis>
<axis name="SIDE">
<function name="aero/coefficient/CYb">
<description>Side_force_due_to_beta</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>aero/beta-rad</property>
<value>-1.4000</value>
</product>
</function>
<function name="aero/coefficient/CYda">
<description>Side_force_due_to_aileron</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>fcs/left-aileron-pos-rad</property>
<value>-0.0500</value>
</product>
</function>
<function name="aero/coefficient/CYdr">
<description>Side_force_due_to_rudder</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>fcs/rudder-pos-rad</property>
<value>0.4500</value>
</product>
</function>
</axis>
<axis name="LIFT">
<function name="aero/coefficient/CLalpha">
<description>Lift_due_to_alpha</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>aero/alpha-rad</property>
<table>
<independentVar>velocities/mach</independentVar>
<tableData>
0.0000 4.5000
0.4000 3.8000
0.6000 3.6000
1.0500 4.5000
1.4000 4.0000
2.8000 2.5000
6.0000 1.1000
9.0000 1.0000
</tableData>
</table>
</product>
</function>
<function name="aero/coefficient/CLDe">
<description>Lift_due_to_Elevator_Deflection</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>fcs/elevator-pos-rad</property>
<table>
<independentVar>velocities/mach</independentVar>
<tableData>
0.0000 1.0000
0.6000 1.0500
1.0000 1.1500
1.2000 1.0000
1.6000 0.6600
2.0000 0.5000
2.4000 0.4000
3.0000 0.3100
5.6000 0.2100
6.0000 0.2000
9.0000 0.2000
</tableData>
</table>
</product>
</function>
<function name="aero/coefficient/CLM">
<description>Lift_due_to_Mach</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>velocities/mach</property>
<table>
<independentVar lookup="row">velocities/mach</independentVar>
<independentVar lookup="column">position/h-sl-ft</independentVar>
<tableData>
0.0000 40000.0000 60000.0000 80000.0000
0.0000 0.0000 0.0000 0.0000 0.0000
0.6000 0.0000 0.0000 0.0000 0.0000
0.8000 0.0000 0.0000 0.2000 0.0000
1.0000 0.0100 0.0400 0.6000 0.0000
1.2000 0.0000 0.0200 0.1500 0.0000
1.4000 0.0000 0.0000 0.0000 0.0000
1.6000 0.0000 0.0000 0.0000 0.0000
9.0000 0.0000 0.0000 0.0000 0.0000
</tableData>
</table>
</product>
</function>
</axis>
<axis name="ROLL">
<function name="aero/coefficient/Clb">
<description>Roll_moment_due_to_beta</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>metrics/bw-ft</property>
<property>aero/beta-rad</property>
<value>-0.0100</value>
</product>
</function>
<function name="aero/coefficient/Clp">
<description>Roll_moment_due_to_roll_rate_(roll_damping)</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>metrics/bw-ft</property>
<property>aero/bi2vel</property>
<property>velocities/p-rad_sec</property>
<value>-0.3500</value>
</product>
</function>
<function name="aero/coefficient/Clr">
<description>Roll_moment_due_to_yaw_rate</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>metrics/bw-ft</property>
<property>aero/bi2vel</property>
<property>velocities/r-rad_sec</property>
<value>0.0400</value>
</product>
</function>
<function name="aero/coefficient/Clda">
<description>Roll_moment_due_to_aileron</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>metrics/bw-ft</property>
<property>fcs/left-aileron-pos-rad</property>
<table>
<independentVar lookup="row">velocities/mach</independentVar>
<independentVar lookup="column">position/h-sl-ft</independentVar>
<tableData>
0.0000 80000.0000
0.0000 0.0500 0.0500
0.4000 0.0700 0.0500
0.6000 0.0800 0.0500
1.0000 0.1100 0.0500
1.4000 0.0800 0.0600
1.6000 0.0700 0.0600
2.4000 0.0600 0.0500
6.0000 0.0300 0.0200
</tableData>
</table>
</product>
</function>
<function name="aero/coefficient/Cldr">
<description>Roll_moment_due_to_rudder</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>metrics/bw-ft</property>
<property>fcs/rudder-pos-rad</property>
<value>0.0120</value>
</product>
</function>
</axis>
<axis name="PITCH">
<function name="aero/coefficient/Cmalpha">
<description>Pitch_moment_due_to_alpha</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>metrics/cbarw-ft</property>
<property>aero/alpha-rad</property>
<value>-1.2000</value>
</product>
</function>
<function name="aero/coefficient/Cmq">
<description>Pitch_moment_due_to_pitch_rate</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>metrics/cbarw-ft</property>
<property>aero/ci2vel</property>
<property>velocities/q-rad_sec</property>
<value>-6.2000</value>
</product>
</function>
<function name="aero/coefficient/Cmadot">
<description>Pitch_moment_due_to_alpha_rate</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>metrics/cbarw-ft</property>
<property>aero/ci2vel</property>
<property>aero/alphadot-rad_sec</property>
<value>0.0000</value>
</product>
</function>
<function name="aero/coefficient/CmM">
<description>Pitch_moment_due_to_Mach</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>metrics/cbarw-ft</property>
<property>velocities/mach</property>
<table>
<independentVar lookup="row">velocities/mach</independentVar>
<independentVar lookup="column">position/h-sl-ft</independentVar>
<tableData>
0.0000 40000.0000 60000.0000 80000.0000
0.0000 0.0000 0.0000 0.0000 0.0000
0.6000 0.0000 -0.0100 -0.0100 0.0000
0.8000 0.0000 -0.1300 -0.1300 0.0000
1.0000 0.0000 -0.1100 -0.1800 0.0000
1.1000 0.0000 -0.1600 -0.1800 0.0000
1.2000 0.0000 -0.2500 -0.1700 0.0000
1.4000 0.0000 -0.0600 -0.1500 0.0000
1.7000 0.0000 -0.0300 -0.0300 0.0000
2.0000 0.0000 -0.0100 -0.0100 0.0000
9.0000 0.0000 0.0000 0.0000 0.0000
</tableData>
</table>
</product>
</function>
<function name="aero/coefficient/Cmde">
<description>Pitch_moment_due_to_elevator_deflection</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>metrics/cbarw-ft</property>
<property>fcs/elevator-pos-rad</property>
<table>
<independentVar>velocities/mach</independentVar>
<tableData>
0.0000 -1.5000
0.8000 -1.6000
1.0000 -1.7500
1.6000 -1.3000
2.8000 -0.6000
6.0000 -0.2500
9.0000 -0.2000
</tableData>
</table>
</product>
</function>
</axis>
<axis name="YAW">
<function name="aero/coefficient/Cnb">
<description>Yaw_moment_due_to_beta</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>metrics/bw-ft</property>
<property>aero/beta-rad</property>
<value>0.5000</value>
</product>
</function>
<function name="aero/coefficient/Cnp">
<description>Yaw_moment_due_to_roll_rate</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>metrics/bw-ft</property>
<property>aero/bi2vel</property>
<property>velocities/p-rad_sec</property>
<value>0.0000</value>
</product>
</function>
<function name="aero/coefficient/Cnr">
<description>Yaw_moment_due_to_yaw_rate</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>metrics/bw-ft</property>
<property>aero/bi2vel</property>
<property>velocities/r-rad_sec</property>
<value>-1.5000</value>
</product>
</function>
<function name="aero/coefficient/Cnda">
<description>Yaw_moment_due_to_aileron</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>metrics/bw-ft</property>
<property>fcs/left-aileron-pos-rad</property>
<value>0.0400</value>
</product>
</function>
<function name="aero/coefficient/Cndr">
<description>Yaw_moment_due_to_rudder</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>metrics/bw-ft</property>
<property>fcs/rudder-pos-rad</property>
<value>-0.3000</value>
</product>
</function>
</axis>
</aerodynamics>
</fdm_config>