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FDM: Ground Reactions

This commit is contained in:
Josh Davidson 2020-06-03 10:36:51 -04:00
parent a65c77a128
commit 6296cf6de9

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@ -1,20 +1,21 @@
<!-- Airbus A320 JSBsim -->
<?xml version="1.0"?>
<!-- Airbus A320 JSBsim -->
<!-- Copyright (c) 2020 Josh Davidson (Octal450) -->
<ground_reactions>
<contact type="BOGEY" name="NOSE_LG">
<location unit="M">
<x> 7.52385 </x>
<y> 0 </y>
<z> -4.31395 </z>
<x>-12.768</x>
<y>0</y>
<z>-4.07014</z>
</location>
<static_friction> 1.4 </static_friction> <!-- Arbitrarily high to help nose wheel steering - no effect on braking -->
<dynamic_friction> 0.6 </dynamic_friction>
<rolling_friction> 0.02 </rolling_friction>
<spring_coeff unit="LBS/FT"> 30935.5 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 16978.5 </damping_coeff>
<max_steer unit="DEG"> 75 </max_steer>
<static_friction>1.4</static_friction> <!-- Arbitrarily high to help nose wheel steering - no effect on braking -->
<dynamic_friction>0.6</dynamic_friction>
<rolling_friction>0.02</rolling_friction>
<spring_coeff unit="LBS/FT">30935.5</spring_coeff>
<damping_coeff unit="LBS/FT/SEC">16978.5</damping_coeff>
<max_steer unit="DEG">75</max_steer>
<table name="CORNERING_COEFF" type="internal">
<tableData> <!-- jsbsim-pacejka.py 3.0 0.03 2.85 1.4 1.03 1.4 -->
-90.0 -0.64429852792097750
@ -56,21 +57,22 @@
90.0 0.64429852792097750
</tableData>
</table>
<brake_group> NONE </brake_group>
<retractable> 1 </retractable>
<brake_group>NONE</brake_group>
<retractable>1</retractable>
</contact>
<contact type="BOGEY" name="LEFT_MLG">
<location unit="M">
<x> 20.318 </x>
<y> -4.25855 </y>
<z> -4.51844 </z>
<x>-0.2554</x>
<y>-4.32562</y>
<z>-4.27463</z>
</location>
<static_friction> 0.4 </static_friction>
<dynamic_friction> 0.6 </dynamic_friction>
<rolling_friction> 0.02 </rolling_friction>
<spring_coeff unit="LBS/FT"> 59785 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 23957 </damping_coeff>
<max_steer unit="DEG"> 0.0 </max_steer>
<static_friction>0.4</static_friction>
<dynamic_friction>0.6</dynamic_friction>
<rolling_friction>0.02</rolling_friction>
<spring_coeff unit="LBS/FT">59785</spring_coeff>
<damping_coeff unit="LBS/FT/SEC">23957</damping_coeff>
<damping_coeff_rebound unit="LBS/FT/SEC">25</damping_coeff_rebound>
<max_steer unit="DEG">0</max_steer>
<table name="CORNERING_COEFF" type="internal">
<tableData> <!-- jsbsim-pacejka.py 3.0 0.06 2.8 0.4 1.03 0.4 -->
-90.0 -0.5760395836174765
@ -112,21 +114,22 @@
90.0 0.5760395836174765
</tableData>
</table>
<brake_group> LEFT </brake_group>
<retractable> 1 </retractable>
<brake_group>LEFT</brake_group>
<retractable>1</retractable>
</contact>
<contact type="BOGEY" name="RIGHT_MLG">
<location unit="M">
<x> 20.318 </x>
<y> 4.25855 </y>
<z> -4.51844 </z>
<x>-0.2554</x>
<y>4.32562</y>
<z>-4.27463</z>
</location>
<static_friction> 0.4 </static_friction>
<dynamic_friction> 0.6 </dynamic_friction>
<rolling_friction> 0.02 </rolling_friction>
<spring_coeff unit="LBS/FT"> 59785 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 23957 </damping_coeff>
<max_steer unit="DEG"> 0.0 </max_steer>
<static_friction>0.4</static_friction>
<dynamic_friction>0.6</dynamic_friction>
<rolling_friction>0.02</rolling_friction>
<spring_coeff unit="LBS/FT">59785</spring_coeff>
<damping_coeff unit="LBS/FT/SEC">23957</damping_coeff>
<damping_coeff_rebound unit="LBS/FT/SEC">25</damping_coeff_rebound>
<max_steer unit="DEG">0</max_steer>
<table name="CORNERING_COEFF" type="internal">
<tableData> <!-- jsbsim-pacejka.py 3.0 0.06 2.8 0.4 1.03 0.4 -->
-90.0 -0.5760395836174765
@ -168,193 +171,193 @@
90.0 0.5760395836174765
</tableData>
</table>
<brake_group> RIGHT </brake_group>
<retractable> 1 </retractable>
<brake_group>RIGHT</brake_group>
<retractable>1</retractable>
</contact>
<contact type="STRUCTURE" name="NOSE_1">
<location unit="M">
<x> 2.6272 </x>
<y> 0 </y>
<z> -1.10572 </z>
<x>-17.919</x>
<y>0</y>
<z>-0.80668</z>
</location>
<static_friction> 1.0 </static_friction>
<dynamic_friction> 0.4 </dynamic_friction>
<rolling_friction> 0.4 </rolling_friction>
<spring_coeff unit="LBS/FT"> 50000 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 50000 </damping_coeff>
<max_steer unit="DEG"> 0.0 </max_steer>
<brake_group> NONE </brake_group>
<retractable> 0 </retractable>
<static_friction>1.0</static_friction>
<dynamic_friction>0.4</dynamic_friction>
<rolling_friction>0.4</rolling_friction>
<spring_coeff unit="LBS/FT">50000</spring_coeff>
<damping_coeff unit="LBS/FT/SEC">50000</damping_coeff>
<max_steer unit="DEG">0.0</max_steer>
<brake_group>NONE</brake_group>
<retractable>0</retractable>
</contact>
<contact type="STRUCTURE" name="NOSE_2">
<location unit="M">
<x> 5.0858 </x>
<y> 0 </y>
<z> 1.34919 </z>
<x>-14.9761</x>
<y>0</y>
<z>1.47783</z>
</location>
<static_friction> 1.0 </static_friction>
<dynamic_friction> 0.4 </dynamic_friction>
<rolling_friction> 0.4 </rolling_friction>
<spring_coeff unit="LBS/FT"> 50000 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 50000 </damping_coeff>
<max_steer unit="DEG"> 0.0 </max_steer>
<brake_group> NONE </brake_group>
<retractable> 0 </retractable>
<static_friction>1.0</static_friction>
<dynamic_friction>0.4</dynamic_friction>
<rolling_friction>0.4</rolling_friction>
<spring_coeff unit="LBS/FT">50000</spring_coeff>
<damping_coeff unit="LBS/FT/SEC">50000</damping_coeff>
<max_steer unit="DEG">0.0</max_steer>
<brake_group>NONE</brake_group>
<retractable>0</retractable>
</contact>
<contact type="STRUCTURE" name="BOTTOM_1">
<location unit="M">
<x> 6.84944 </x>
<y> 0 </y>
<z> -2.11157 </z>
<x>-12.7651</x>
<y>0</y>
<z>-2.19457</z>
</location>
<static_friction> 1.0 </static_friction>
<dynamic_friction> 0.4 </dynamic_friction>
<rolling_friction> 0.4 </rolling_friction>
<spring_coeff unit="LBS/FT"> 50000 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 50000 </damping_coeff>
<max_steer unit="DEG"> 0.0 </max_steer>
<brake_group> NONE </brake_group>
<retractable> 0 </retractable>
<static_friction>1.0</static_friction>
<dynamic_friction>0.4</dynamic_friction>
<rolling_friction>0.4</rolling_friction>
<spring_coeff unit="LBS/FT">50000</spring_coeff>
<damping_coeff unit="LBS/FT/SEC">50000</damping_coeff>
<max_steer unit="DEG">0.0</max_steer>
<brake_group>NONE</brake_group>
<retractable>0</retractable>
</contact>
<contact type="STRUCTURE" name="BOTTOM_2">
<location unit="M">
<x> 27.7516 </x>
<y> 0 </y>
<z> -2.10594 </z>
<x>5.90761</x>
<y>0</y>
<z>-2.21212</z>
</location>
<static_friction> 1.0 </static_friction>
<dynamic_friction> 0.4 </dynamic_friction>
<rolling_friction> 0.4 </rolling_friction>
<spring_coeff unit="LBS/FT"> 50000 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 50000 </damping_coeff>
<max_steer unit="DEG"> 0.0 </max_steer>
<brake_group> NONE </brake_group>
<retractable> 0 </retractable>
<static_friction>1.0</static_friction>
<dynamic_friction>0.4</dynamic_friction>
<rolling_friction>0.4</rolling_friction>
<spring_coeff unit="LBS/FT">50000</spring_coeff>
<damping_coeff unit="LBS/FT/SEC">50000</damping_coeff>
<max_steer unit="DEG">0.0</max_steer>
<brake_group>NONE</brake_group>
<retractable>0</retractable>
</contact>
<contact type="STRUCTURE" name="TOP_1">
<location unit="M">
<x> 8.9842 </x>
<y> 0 </y>
<z> 2.00377 </z>
<x>-11.9354</x>
<y>0</y>
<z>1.96919</z>
</location>
<static_friction> 1.0 </static_friction>
<dynamic_friction> 0.4 </dynamic_friction>
<rolling_friction> 0.4 </rolling_friction>
<spring_coeff unit="LBS/FT"> 50000 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 50000 </damping_coeff>
<max_steer unit="DEG"> 0.0 </max_steer>
<brake_group> NONE </brake_group>
<retractable> 0 </retractable>
<static_friction>1.0</static_friction>
<dynamic_friction>0.4</dynamic_friction>
<rolling_friction>0.4</rolling_friction>
<spring_coeff unit="LBS/FT">50000</spring_coeff>
<damping_coeff unit="LBS/FT/SEC">50000</damping_coeff>
<max_steer unit="DEG">0.0</max_steer>
<brake_group>NONE</brake_group>
<retractable>0</retractable>
</contact>
<contact type="STRUCTURE" name="TOP_2">
<location unit="M">
<x> 30.4145 </x>
<y> 0 </y>
<z> 1.98661 </z>
<x>10.2081</x>
<y>0</y>
<z>1.96409</z>
</location>
<static_friction> 1.0 </static_friction>
<dynamic_friction> 0.4 </dynamic_friction>
<rolling_friction> 0.4 </rolling_friction>
<spring_coeff unit="LBS/FT"> 50000 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 50000 </damping_coeff>
<max_steer unit="DEG"> 0.0 </max_steer>
<brake_group> NONE </brake_group>
<retractable> 0 </retractable>
<static_friction>1.0</static_friction>
<dynamic_friction>0.4</dynamic_friction>
<rolling_friction>0.4</rolling_friction>
<spring_coeff unit="LBS/FT">50000</spring_coeff>
<damping_coeff unit="LBS/FT/SEC">50000</damping_coeff>
<max_steer unit="DEG">0.0</max_steer>
<brake_group>NONE</brake_group>
<retractable>0</retractable>
</contact>
<contact type="STRUCTURE" name="ENG_1">
<location unit="M">
<x> 14.3962788 </x>
<y> -5.755 </y>
<z> -3.1750887 </z>
<x>-4.70712</x>
<y>-5.63082</y>
<z>-3.2689</z>
</location>
<static_friction> 1.0 </static_friction>
<dynamic_friction> 0.4 </dynamic_friction>
<rolling_friction> 0.4 </rolling_friction>
<spring_coeff unit="LBS/FT"> 50000 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 50000 </damping_coeff>
<max_steer unit="DEG"> 0.0 </max_steer>
<brake_group> NONE </brake_group>
<retractable> 0 </retractable>
<static_friction>1.0</static_friction>
<dynamic_friction>0.4</dynamic_friction>
<rolling_friction>0.4</rolling_friction>
<spring_coeff unit="LBS/FT">50000</spring_coeff>
<damping_coeff unit="LBS/FT/SEC">50000</damping_coeff>
<max_steer unit="DEG">0.0</max_steer>
<brake_group>NONE</brake_group>
<retractable>0</retractable>
</contact>
<contact type="STRUCTURE" name="ENG_2">
<location unit="M">
<x> 14.3962788 </x>
<y> 5.755 </y>
<z> -3.1750887 </z>
<x>-4.70712</x>
<y>5.63082</y>
<z>-3.2689</z>
</location>
<static_friction> 1.0 </static_friction>
<dynamic_friction> 0.4 </dynamic_friction>
<rolling_friction> 0.4 </rolling_friction>
<spring_coeff unit="LBS/FT"> 50000 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 50000 </damping_coeff>
<max_steer unit="DEG"> 0.0 </max_steer>
<brake_group> NONE </brake_group>
<retractable> 0 </retractable>
<static_friction>1.0</static_friction>
<dynamic_friction>0.4</dynamic_friction>
<rolling_friction>0.4</rolling_friction>
<spring_coeff unit="LBS/FT">50000</spring_coeff>
<damping_coeff unit="LBS/FT/SEC">50000</damping_coeff>
<max_steer unit="DEG">0.0</max_steer>
<brake_group>NONE</brake_group>
<retractable>0</retractable>
</contact>
<contact type="STRUCTURE" name="TAIL_1">
<location unit="M">
<x> 40.0923 </x>
<y> 0 </y>
<z> 0.85936 </z>
<x>19.6402</x>
<y>0</y>
<z>0.93489</z>
</location>
<static_friction> 1.0 </static_friction>
<dynamic_friction> 0.4 </dynamic_friction>
<rolling_friction> 0.4 </rolling_friction>
<spring_coeff unit="LBS/FT"> 50000 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 50000 </damping_coeff>
<max_steer unit="DEG"> 0.0 </max_steer>
<brake_group> NONE </brake_group>
<retractable> 0 </retractable>
<static_friction>1.0</static_friction>
<dynamic_friction>0.4</dynamic_friction>
<rolling_friction>0.4</rolling_friction>
<spring_coeff unit="LBS/FT">50000</spring_coeff>
<damping_coeff unit="LBS/FT/SEC">50000</damping_coeff>
<max_steer unit="DEG">0.0</max_steer>
<brake_group>NONE</brake_group>
<retractable>0</retractable>
</contact>
<contact type="STRUCTURE" name="TAIL_2">
<location unit="M">
<x> 38.543 </x>
<y> 0 </y>
<z> 7.84126 </z>
<x>17.9141</x>
<y>0</y>
<z>7.81038</z>
</location>
<static_friction> 1.0 </static_friction>
<dynamic_friction> 0.4 </dynamic_friction>
<rolling_friction> 0.4 </rolling_friction>
<spring_coeff unit="LBS/FT"> 50000 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 50000 </damping_coeff>
<max_steer unit="DEG"> 0.0 </max_steer>
<brake_group> NONE </brake_group>
<retractable> 0 </retractable>
<static_friction>1.0</static_friction>
<dynamic_friction>0.4</dynamic_friction>
<rolling_friction>0.4</rolling_friction>
<spring_coeff unit="LBS/FT">50000</spring_coeff>
<damping_coeff unit="LBS/FT/SEC">50000</damping_coeff>
<max_steer unit="DEG">0.0</max_steer>
<brake_group>NONE</brake_group>
<retractable>0</retractable>
</contact>
<contact type="STRUCTURE" name="WING_TIP_1">
<location unit="M">
<x> 23.7872 </x>
<y> -16.9102 </y>
<z> 0.22943 </z>
<x>3.27303</x>
<y>-16.9301</y>
<z>0.38936</z>
</location>
<static_friction> 1.0 </static_friction>
<dynamic_friction> 0.4 </dynamic_friction>
<rolling_friction> 0.4 </rolling_friction>
<spring_coeff unit="LBS/FT"> 50000 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 50000 </damping_coeff>
<max_steer unit="DEG"> 0.0 </max_steer>
<brake_group> NONE </brake_group>
<retractable> 0 </retractable>
<static_friction>1.0</static_friction>
<dynamic_friction>0.4</dynamic_friction>
<rolling_friction>0.4</rolling_friction>
<spring_coeff unit="LBS/FT">50000</spring_coeff>
<damping_coeff unit="LBS/FT/SEC">50000</damping_coeff>
<max_steer unit="DEG">0.0</max_steer>
<brake_group>NONE</brake_group>
<retractable>0</retractable>
</contact>
<contact type="STRUCTURE" name="WING_TIP_2">
<location unit="M">
<x> 23.7872 </x>
<y> 16.9102 </y>
<z> 0.22943 </z>
<x>3.27303</x>
<y>16.9301</y>
<z>0.38936</z>
</location>
<static_friction> 1.0 </static_friction>
<dynamic_friction> 1 </dynamic_friction>
<rolling_friction> 1 </rolling_friction>
<spring_coeff unit="LBS/FT"> 50000 </spring_coeff>
<damping_coeff unit="LBS/FT/SEC"> 50000 </damping_coeff>
<max_steer unit="DEG"> 0.0 </max_steer>
<brake_group> NONE </brake_group>
<retractable> 0 </retractable>
<static_friction>1.0</static_friction>
<dynamic_friction>1</dynamic_friction>
<rolling_friction>1</rolling_friction>
<spring_coeff unit="LBS/FT">50000</spring_coeff>
<damping_coeff unit="LBS/FT/SEC">50000</damping_coeff>
<max_steer unit="DEG">0.0</max_steer>
<brake_group>NONE</brake_group>
<retractable>0</retractable>
</contact>
</ground_reactions>