From 444001a287cccdee3ae2f0d50045f76b5f71618c Mon Sep 17 00:00:00 2001
From: Joshua Davidson <joshuadavidson2000@gmail.com>
Date: Sat, 21 Jul 2018 20:41:54 -0400
Subject: [PATCH] Sim: Cleanup JSB

---
 A320-100-CFM.xml                    | 335 +--------------------------
 A320-200-CFM.xml                    | 335 +--------------------------
 A320-200-IAE.xml                    | 336 +---------------------------
 A320neo-CFM.xml                     | 335 +--------------------------
 A320neo-PW.xml                      | 335 +--------------------------
 Systems/a320-external-reactions.xml |  23 ++
 Systems/a320-ground-reactions.xml   | 242 ++++++++++++++++++++
 Systems/a320-mass-balance.xml       |  61 +++++
 Systems/a320-metrics.xml            |  37 +++
 9 files changed, 388 insertions(+), 1651 deletions(-)
 create mode 100644 Systems/a320-external-reactions.xml
 create mode 100644 Systems/a320-ground-reactions.xml
 create mode 100644 Systems/a320-mass-balance.xml
 create mode 100644 Systems/a320-metrics.xml

diff --git a/A320-100-CFM.xml b/A320-100-CFM.xml
index 4259068d..dfde4253 100644
--- a/A320-100-CFM.xml
+++ b/A320-100-CFM.xml
@@ -17,321 +17,9 @@ xsi:noNamespaceSchemaLocation="http://jsbsim.sourceforge.net/JSBSim.xsd">
 		<description>A32X FDE</description>
 	</fileheader>
 	
-	<metrics>
-		<wingarea  unit="FT2"> 1319.79 </wingarea>
-		<wingspan  unit="FT" >  117.26 </wingspan>
-		<wing_incidence      >    1.03 </wing_incidence>
-		<chord     unit="FT" >   20.76 </chord>
-		<htailarea unit="FT2">  334.24 </htailarea>
-		<htailarm  unit="FT" >   57.88 </htailarm>
-		<vtailarea unit="FT2">  248.79 </vtailarea>
-		<vtailarm  unit="FT" >   57.33 </vtailarm>
-		
-		<location name="AERORP" unit="M">
-			<x> 19.2274 </x>
-			<y> 0 </y>
-			<z> 0.19249 </z>
-		</location>
-		
-		<location name="EYEPOINT" unit="M">
-			<x> 0 </x>
-			<y> 0 </y>
-			<z> 0 </z>
-		</location>
-		
-		<location name="VRP" unit="M">
-			<x> 18.8499 </x>
-			<y> 0 </y>
-			<z> -1.7005004 </z>
-		</location>
-	</metrics>
-	
-	<mass_balance>
-		<ixx unit="SLUG*FT2">  611903 </ixx>
-		<iyy unit="SLUG*FT2"> 1735389 </iyy>
-		<izz unit="SLUG*FT2"> 2301293 </izz>
-
-		<ixy unit="SLUG*FT2">       0 </ixy>
-		<ixz unit="SLUG*FT2">       0 </ixz>
-		<iyz unit="SLUG*FT2">       0 </iyz>
-		<emptywt unit="LBS" >   80431 </emptywt>
-		
-		<location name="CG" unit="M">
-			<x> 18.8231 </x>
-			<y> 0 </y>
-			<z> 0.19249 </z>
-		</location>
-		
-		<pointmass name="Crew">
-			<weight unit="LBS">380</weight>
-			<location name="POINTMASS" unit="M">
-				<x> 5.29845 </x>
-				<y> 0 </y>
-				<z> -0.66384 </z>
-			</location>
-		</pointmass>
-		
-		<pointmass name="PAX">
-			<weight unit="LBS">23000</weight>
-			<location name="POINTMASS" unit="M">
-				<x> 18.8231 </x>
-				<y> 0 </y>
-				<z> 0.19249 </z>
-			</location>
-		</pointmass>
-		
-		<pointmass name="Fwd Cargo">
-			<weight unit="LBS">3000</weight>
-			<location name="POINTMASS" unit="M"> 
-				<x> 13.0849 </x>
-				<y> 0 </y>
-				<z> -1.18112 </z>
-			</location>
-		</pointmass>
-		
-		<pointmass name="Aft Cargo">
-			<weight unit="LBS">3000</weight>
-			<location name="POINTMASS" unit="M">
-				<x> 24.5565 </x>
-				<y> 0 </y>
-				<z> -1.18112 </z>
-			</location>
-		</pointmass>
-	</mass_balance>
-	
-	<ground_reactions>
-		<contact type="BOGEY" name="NOSE_LG">
-			<location unit="M">
-				<x> 7.52385 </x>
-				<y> 0 </y>
-				<z> -4.31395 </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"> 30935.5 </spring_coeff>
-			<damping_coeff unit="LBS/FT/SEC"> 16978.5 </damping_coeff>
-			<max_steer unit="DEG"> 70 </max_steer>
-			<brake_group> NOSE </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>
-			</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>
-			<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>
-			</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>
-			<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>
-			</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>
-		</contact>
-		<contact type="STRUCTURE" name="NOSE_2">
-			<location unit="M">
-				<x> 5.0858 </x>
-				<y> 0 </y>
-				<z> 1.34919 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="BOTTOM_1">
-			<location unit="M">
-				<x> 6.84944 </x>
-				<y> 0 </y>
-				<z> -2.11157 </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>
-		</contact>
-		<contact type="STRUCTURE" name="BOTTOM_2">
-			<location unit="M">
-				<x> 27.7516 </x>
-				<y> 0 </y>
-				<z> -2.10594 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="TOP_1">
-			<location unit="M">
-				<x> 8.9842 </x>
-				<y> 0 </y>
-				<z> 2.00377 </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>
-		</contact>
-		<contact type="STRUCTURE" name="TOP_2">
-			<location unit="M">
-				<x> 30.4145 </x>
-				<y> 0 </y>
-				<z> 1.98661 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="ENG_1">
-			<location unit="M">
-				<x> 14.3962788 </x>
-				<y> -5.755 </y>
-				<z> -3.1750887 </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>
-		</contact>
-		<contact type="STRUCTURE" name="ENG_2">
-			<location unit="M">
-				<x> 14.3962788 </x>
-				<y> 5.755 </y>
-				<z> -3.1750887 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="TAIL_1">
-			<location unit="M">
-				<x> 40.0923 </x>
-				<y> 0 </y>
-				<z> 0.85936 </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>
-		</contact>
-		<contact type="STRUCTURE" name="TAIL_2">
-			<location unit="M">
-				<x> 38.543 </x>
-				<y> 0 </y>
-				<z> 7.84126 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="WING_TIP_1">
-			<location unit="M">
-				<x> 23.7872 </x>
-				<y> -16.9102 </y>
-				<z> 0.22943 </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>
-		</contact>
-		<contact type="STRUCTURE" name="WING_TIP_2">
-			<location unit="M">
-				<x> 23.7872 </x>
-				<y> 16.9102 </y>
-				<z> 0.22943 </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>
-		</contact>
-	</ground_reactions>
+	<metrics file="Systems/a320-metrics"/>
+	<mass_balance file="Systems/a320-mass-balance"/>
+	<ground_reactions file="Systems/a320-ground-reactions"/>
 	
 	<propulsion>
 		<engine file="cfm56_5a1_1">
@@ -458,19 +146,6 @@ xsi:noNamespaceSchemaLocation="http://jsbsim.sourceforge.net/JSBSim.xsd">
 	<flight_control name="none"/>
 	
 	<aerodynamics file="Systems/a320-aerodynamics.xml"/>
-	
-	<external_reactions>
-		<force name="pushback" frame="BODY">
-			<location unit="M">
-				<x> 7.52385 </x>
-				<y> 0 </y>
-				<z> -3.2846 </z>
-			</location>
-			<direction>
-				<x> 1 </x>
-				<y> 0 </y>
-				<z> 0 </z>
-			</direction>
-		</force>
-	</external_reactions>
+	<external_reactions file="Systems/a320-external-reactions"/>
+
 </fdm_config>
diff --git a/A320-200-CFM.xml b/A320-200-CFM.xml
index 749236c4..d794782a 100644
--- a/A320-200-CFM.xml
+++ b/A320-200-CFM.xml
@@ -17,321 +17,9 @@ xsi:noNamespaceSchemaLocation="http://jsbsim.sourceforge.net/JSBSim.xsd">
 		<description>A32X FDE</description>
 	</fileheader>
 	
-	<metrics>
-		<wingarea  unit="FT2"> 1319.79 </wingarea>
-		<wingspan  unit="FT" >  117.26 </wingspan>
-		<wing_incidence      >    1.03 </wing_incidence>
-		<chord     unit="FT" >   20.76 </chord>
-		<htailarea unit="FT2">  334.24 </htailarea>
-		<htailarm  unit="FT" >   57.88 </htailarm>
-		<vtailarea unit="FT2">  248.79 </vtailarea>
-		<vtailarm  unit="FT" >   57.33 </vtailarm>
-		
-		<location name="AERORP" unit="M">
-			<x> 19.2274 </x>
-			<y> 0 </y>
-			<z> 0.19249 </z>
-		</location>
-		
-		<location name="EYEPOINT" unit="M">
-			<x> 0 </x>
-			<y> 0 </y>
-			<z> 0 </z>
-		</location>
-		
-		<location name="VRP" unit="M">
-			<x> 18.8499 </x>
-			<y> 0 </y>
-			<z> -1.7005004 </z>
-		</location>
-	</metrics>
-	
-	<mass_balance>
-		<ixx unit="SLUG*FT2">  611903 </ixx>
-		<iyy unit="SLUG*FT2"> 1735389 </iyy>
-		<izz unit="SLUG*FT2"> 2301293 </izz>
-
-		<ixy unit="SLUG*FT2">       0 </ixy>
-		<ixz unit="SLUG*FT2">       0 </ixz>
-		<iyz unit="SLUG*FT2">       0 </iyz>
-		<emptywt unit="LBS" >   80431 </emptywt>
-		
-		<location name="CG" unit="M">
-			<x> 18.8231 </x>
-			<y> 0 </y>
-			<z> 0.19249 </z>
-		</location>
-		
-		<pointmass name="Crew">
-			<weight unit="LBS">380</weight>
-			<location name="POINTMASS" unit="M">
-				<x> 5.29845 </x>
-				<y> 0 </y>
-				<z> -0.66384 </z>
-			</location>
-		</pointmass>
-		
-		<pointmass name="PAX">
-			<weight unit="LBS">23000</weight>
-			<location name="POINTMASS" unit="M">
-				<x> 18.8231 </x>
-				<y> 0 </y>
-				<z> 0.19249 </z>
-			</location>
-		</pointmass>
-		
-		<pointmass name="Fwd Cargo">
-			<weight unit="LBS">3000</weight>
-			<location name="POINTMASS" unit="M"> 
-				<x> 13.0849 </x>
-				<y> 0 </y>
-				<z> -1.18112 </z>
-			</location>
-		</pointmass>
-		
-		<pointmass name="Aft Cargo">
-			<weight unit="LBS">3000</weight>
-			<location name="POINTMASS" unit="M">
-				<x> 24.5565 </x>
-				<y> 0 </y>
-				<z> -1.18112 </z>
-			</location>
-		</pointmass>
-	</mass_balance>
-	
-	<ground_reactions>
-		<contact type="BOGEY" name="NOSE_LG">
-			<location unit="M">
-				<x> 7.52385 </x>
-				<y> 0 </y>
-				<z> -4.31395 </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"> 30935.5 </spring_coeff>
-			<damping_coeff unit="LBS/FT/SEC"> 16978.5 </damping_coeff>
-			<max_steer unit="DEG"> 70 </max_steer>
-			<brake_group> NOSE </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>
-			</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>
-			<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>
-			</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>
-			<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>
-			</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>
-		</contact>
-		<contact type="STRUCTURE" name="NOSE_2">
-			<location unit="M">
-				<x> 5.0858 </x>
-				<y> 0 </y>
-				<z> 1.34919 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="BOTTOM_1">
-			<location unit="M">
-				<x> 6.84944 </x>
-				<y> 0 </y>
-				<z> -2.11157 </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>
-		</contact>
-		<contact type="STRUCTURE" name="BOTTOM_2">
-			<location unit="M">
-				<x> 27.7516 </x>
-				<y> 0 </y>
-				<z> -2.10594 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="TOP_1">
-			<location unit="M">
-				<x> 8.9842 </x>
-				<y> 0 </y>
-				<z> 2.00377 </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>
-		</contact>
-		<contact type="STRUCTURE" name="TOP_2">
-			<location unit="M">
-				<x> 30.4145 </x>
-				<y> 0 </y>
-				<z> 1.98661 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="ENG_1">
-			<location unit="M">
-				<x> 14.3962788 </x>
-				<y> -5.755 </y>
-				<z> -3.1750887 </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>
-		</contact>
-		<contact type="STRUCTURE" name="ENG_2">
-			<location unit="M">
-				<x> 14.3962788 </x>
-				<y> 5.755 </y>
-				<z> -3.1750887 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="TAIL_1">
-			<location unit="M">
-				<x> 40.0923 </x>
-				<y> 0 </y>
-				<z> 0.85936 </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>
-		</contact>
-		<contact type="STRUCTURE" name="TAIL_2">
-			<location unit="M">
-				<x> 38.543 </x>
-				<y> 0 </y>
-				<z> 7.84126 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="WING_TIP_1">
-			<location unit="M">
-				<x> 23.7872 </x>
-				<y> -16.9102 </y>
-				<z> 0.22943 </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>
-		</contact>
-		<contact type="STRUCTURE" name="WING_TIP_2">
-			<location unit="M">
-				<x> 23.7872 </x>
-				<y> 16.9102 </y>
-				<z> 0.22943 </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>
-		</contact>
-	</ground_reactions>
+	<metrics file="Systems/a320-metrics"/>
+	<mass_balance file="Systems/a320-mass-balance"/>
+	<ground_reactions file="Systems/a320-ground-reactions"/>
 	
 	<propulsion>
 		<engine file="cfm56_5b4_1">
@@ -458,19 +146,6 @@ xsi:noNamespaceSchemaLocation="http://jsbsim.sourceforge.net/JSBSim.xsd">
 	<flight_control name="none"/>
 	
 	<aerodynamics file="Systems/a320-aerodynamics.xml"/>
-	
-	<external_reactions>
-		<force name="pushback" frame="BODY">
-			<location unit="M">
-				<x> 7.52385 </x>
-				<y> 0 </y>
-				<z> -3.2846 </z>
-			</location>
-			<direction>
-				<x> 1 </x>
-				<y> 0 </y>
-				<z> 0 </z>
-			</direction>
-		</force>
-	</external_reactions>
+	<external_reactions file="Systems/a320-external-reactions"/>
+
 </fdm_config>
diff --git a/A320-200-IAE.xml b/A320-200-IAE.xml
index 73d540cd..1b491710 100644
--- a/A320-200-IAE.xml
+++ b/A320-200-IAE.xml
@@ -17,321 +17,9 @@ xsi:noNamespaceSchemaLocation="http://jsbsim.sourceforge.net/JSBSim.xsd">
 		<description>A32X FDE</description>
 	</fileheader>
 	
-	<metrics>
-		<wingarea  unit="FT2"> 1319.79 </wingarea>
-		<wingspan  unit="FT" >  117.26 </wingspan>
-		<wing_incidence      >    1.03 </wing_incidence>
-		<chord     unit="FT" >   20.76 </chord>
-		<htailarea unit="FT2">  334.24 </htailarea>
-		<htailarm  unit="FT" >   57.88 </htailarm>
-		<vtailarea unit="FT2">  248.79 </vtailarea>
-		<vtailarm  unit="FT" >   57.33 </vtailarm>
-		
-		<location name="AERORP" unit="M">
-			<x> 19.2274 </x>
-			<y> 0 </y>
-			<z> 0.19249 </z>
-		</location>
-		
-		<location name="EYEPOINT" unit="M">
-			<x> 0 </x>
-			<y> 0 </y>
-			<z> 0 </z>
-		</location>
-		
-		<location name="VRP" unit="M">
-			<x> 18.8499 </x>
-			<y> 0 </y>
-			<z> -1.7005004 </z>
-		</location>
-	</metrics>
-	
-	<mass_balance>
-		<ixx unit="SLUG*FT2">  611903 </ixx>
-		<iyy unit="SLUG*FT2"> 1735389 </iyy>
-		<izz unit="SLUG*FT2"> 2301293 </izz>
-
-		<ixy unit="SLUG*FT2">       0 </ixy>
-		<ixz unit="SLUG*FT2">       0 </ixz>
-		<iyz unit="SLUG*FT2">       0 </iyz>
-		<emptywt unit="LBS" >   80431 </emptywt>
-		
-		<location name="CG" unit="M">
-			<x> 18.8231 </x>
-			<y> 0 </y>
-			<z> 0.19249 </z>
-		</location>
-		
-		<pointmass name="Crew">
-			<weight unit="LBS">380</weight>
-			<location name="POINTMASS" unit="M">
-				<x> 5.29845 </x>
-				<y> 0 </y>
-				<z> -0.66384 </z>
-			</location>
-		</pointmass>
-		
-		<pointmass name="PAX">
-			<weight unit="LBS">23000</weight>
-			<location name="POINTMASS" unit="M">
-				<x> 18.8231 </x>
-				<y> 0 </y>
-				<z> 0.19249 </z>
-			</location>
-		</pointmass>
-		
-		<pointmass name="Fwd Cargo">
-			<weight unit="LBS">3000</weight>
-			<location name="POINTMASS" unit="M"> 
-				<x> 13.0849 </x>
-				<y> 0 </y>
-				<z> -1.18112 </z>
-			</location>
-		</pointmass>
-		
-		<pointmass name="Aft Cargo">
-			<weight unit="LBS">3000</weight>
-			<location name="POINTMASS" unit="M">
-				<x> 24.5565 </x>
-				<y> 0 </y>
-				<z> -1.18112 </z>
-			</location>
-		</pointmass>
-	</mass_balance>
-	
-	<ground_reactions>
-		<contact type="BOGEY" name="NOSE_LG">
-			<location unit="M">
-				<x> 7.52385 </x>
-				<y> 0 </y>
-				<z> -4.31395 </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"> 30935.5 </spring_coeff>
-			<damping_coeff unit="LBS/FT/SEC"> 16978.5 </damping_coeff>
-			<max_steer unit="DEG"> 70 </max_steer>
-			<brake_group> NOSE </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>
-			</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>
-			<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>
-			</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>
-			<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>
-			</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>
-		</contact>
-		<contact type="STRUCTURE" name="NOSE_2">
-			<location unit="M">
-				<x> 5.0858 </x>
-				<y> 0 </y>
-				<z> 1.34919 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="BOTTOM_1">
-			<location unit="M">
-				<x> 6.84944 </x>
-				<y> 0 </y>
-				<z> -2.11157 </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>
-		</contact>
-		<contact type="STRUCTURE" name="BOTTOM_2">
-			<location unit="M">
-				<x> 27.7516 </x>
-				<y> 0 </y>
-				<z> -2.10594 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="TOP_1">
-			<location unit="M">
-				<x> 8.9842 </x>
-				<y> 0 </y>
-				<z> 2.00377 </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>
-		</contact>
-		<contact type="STRUCTURE" name="TOP_2">
-			<location unit="M">
-				<x> 30.4145 </x>
-				<y> 0 </y>
-				<z> 1.98661 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="ENG_1">
-			<location unit="M">
-				<x> 14.3962788 </x>
-				<y> -5.755 </y>
-				<z> -3.1750887 </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>
-		</contact>
-		<contact type="STRUCTURE" name="ENG_2">
-			<location unit="M">
-				<x> 14.3962788 </x>
-				<y> 5.755 </y>
-				<z> -3.1750887 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="TAIL_1">
-			<location unit="M">
-				<x> 40.0923 </x>
-				<y> 0 </y>
-				<z> 0.85936 </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>
-		</contact>
-		<contact type="STRUCTURE" name="TAIL_2">
-			<location unit="M">
-				<x> 38.543 </x>
-				<y> 0 </y>
-				<z> 7.84126 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="WING_TIP_1">
-			<location unit="M">
-				<x> 23.7872 </x>
-				<y> -16.9102 </y>
-				<z> 0.22943 </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>
-		</contact>
-		<contact type="STRUCTURE" name="WING_TIP_2">
-			<location unit="M">
-				<x> 23.7872 </x>
-				<y> 16.9102 </y>
-				<z> 0.22943 </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>
-		</contact>
-	</ground_reactions>
+	<metrics file="Systems/a320-metrics"/>
+	<mass_balance file="Systems/a320-mass-balance"/>
+	<ground_reactions file="Systems/a320-ground-reactions"/>
 	
 	<propulsion>
 		<engine file="v2527_a5_1">
@@ -456,21 +144,7 @@ xsi:noNamespaceSchemaLocation="http://jsbsim.sourceforge.net/JSBSim.xsd">
 	<system file="a320-spoiler"/>
 	
 	<flight_control name="none"/>
-	
 	<aerodynamics file="Systems/a320-aerodynamics.xml"/>
-	
-	<external_reactions>
-		<force name="pushback" frame="BODY">
-			<location unit="M">
-				<x> 7.52385 </x>
-				<y> 0 </y>
-				<z> -3.2846 </z>
-			</location>
-			<direction>
-				<x> 1 </x>
-				<y> 0 </y>
-				<z> 0 </z>
-			</direction>
-		</force>
-	</external_reactions>
+	<external_reactions file="Systems/a320-external-reactions"/>
+
 </fdm_config>
diff --git a/A320neo-CFM.xml b/A320neo-CFM.xml
index 090a3a24..653d89d0 100644
--- a/A320neo-CFM.xml
+++ b/A320neo-CFM.xml
@@ -17,321 +17,9 @@ xsi:noNamespaceSchemaLocation="http://jsbsim.sourceforge.net/JSBSim.xsd">
 		<description>A32X FDE</description>
 	</fileheader>
 	
-	<metrics>
-		<wingarea  unit="FT2"> 1319.79 </wingarea>
-		<wingspan  unit="FT" >  117.26 </wingspan>
-		<wing_incidence      >    1.03 </wing_incidence>
-		<chord     unit="FT" >   20.76 </chord>
-		<htailarea unit="FT2">  334.24 </htailarea>
-		<htailarm  unit="FT" >   57.88 </htailarm>
-		<vtailarea unit="FT2">  248.79 </vtailarea>
-		<vtailarm  unit="FT" >   57.33 </vtailarm>
-		
-		<location name="AERORP" unit="M">
-			<x> 19.2274 </x>
-			<y> 0 </y>
-			<z> 0.19249 </z>
-		</location>
-		
-		<location name="EYEPOINT" unit="M">
-			<x> 0 </x>
-			<y> 0 </y>
-			<z> 0 </z>
-		</location>
-		
-		<location name="VRP" unit="M">
-			<x> 18.8499 </x>
-			<y> 0 </y>
-			<z> -1.7005004 </z>
-		</location>
-	</metrics>
-	
-	<mass_balance>
-		<ixx unit="SLUG*FT2">  611903 </ixx>
-		<iyy unit="SLUG*FT2"> 1735389 </iyy>
-		<izz unit="SLUG*FT2"> 2301293 </izz>
-
-		<ixy unit="SLUG*FT2">       0 </ixy>
-		<ixz unit="SLUG*FT2">       0 </ixz>
-		<iyz unit="SLUG*FT2">       0 </iyz>
-		<emptywt unit="LBS" >   80431 </emptywt>
-		
-		<location name="CG" unit="M">
-			<x> 18.8231 </x>
-			<y> 0 </y>
-			<z> 0.19249 </z>
-		</location>
-		
-		<pointmass name="Crew">
-			<weight unit="LBS">380</weight>
-			<location name="POINTMASS" unit="M">
-				<x> 5.29845 </x>
-				<y> 0 </y>
-				<z> -0.66384 </z>
-			</location>
-		</pointmass>
-		
-		<pointmass name="PAX">
-			<weight unit="LBS">23000</weight>
-			<location name="POINTMASS" unit="M">
-				<x> 18.8231 </x>
-				<y> 0 </y>
-				<z> 0.19249 </z>
-			</location>
-		</pointmass>
-		
-		<pointmass name="Fwd Cargo">
-			<weight unit="LBS">3000</weight>
-			<location name="POINTMASS" unit="M"> 
-				<x> 13.0849 </x>
-				<y> 0 </y>
-				<z> -1.18112 </z>
-			</location>
-		</pointmass>
-		
-		<pointmass name="Aft Cargo">
-			<weight unit="LBS">3000</weight>
-			<location name="POINTMASS" unit="M">
-				<x> 24.5565 </x>
-				<y> 0 </y>
-				<z> -1.18112 </z>
-			</location>
-		</pointmass>
-	</mass_balance>
-	
-	<ground_reactions>
-		<contact type="BOGEY" name="NOSE_LG">
-			<location unit="M">
-				<x> 7.52385 </x>
-				<y> 0 </y>
-				<z> -4.31395 </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"> 30935.5 </spring_coeff>
-			<damping_coeff unit="LBS/FT/SEC"> 16978.5 </damping_coeff>
-			<max_steer unit="DEG"> 70 </max_steer>
-			<brake_group> NOSE </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>
-			</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>
-			<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>
-			</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>
-			<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>
-			</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>
-		</contact>
-		<contact type="STRUCTURE" name="NOSE_2">
-			<location unit="M">
-				<x> 5.0858 </x>
-				<y> 0 </y>
-				<z> 1.34919 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="BOTTOM_1">
-			<location unit="M">
-				<x> 6.84944 </x>
-				<y> 0 </y>
-				<z> -2.11157 </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>
-		</contact>
-		<contact type="STRUCTURE" name="BOTTOM_2">
-			<location unit="M">
-				<x> 27.7516 </x>
-				<y> 0 </y>
-				<z> -2.10594 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="TOP_1">
-			<location unit="M">
-				<x> 8.9842 </x>
-				<y> 0 </y>
-				<z> 2.00377 </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>
-		</contact>
-		<contact type="STRUCTURE" name="TOP_2">
-			<location unit="M">
-				<x> 30.4145 </x>
-				<y> 0 </y>
-				<z> 1.98661 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="ENG_1">
-			<location unit="M">
-				<x> 14.3962788 </x>
-				<y> -5.755 </y>
-				<z> -3.1750887 </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>
-		</contact>
-		<contact type="STRUCTURE" name="ENG_2">
-			<location unit="M">
-				<x> 14.3962788 </x>
-				<y> 5.755 </y>
-				<z> -3.1750887 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="TAIL_1">
-			<location unit="M">
-				<x> 40.0923 </x>
-				<y> 0 </y>
-				<z> 0.85936 </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>
-		</contact>
-		<contact type="STRUCTURE" name="TAIL_2">
-			<location unit="M">
-				<x> 38.543 </x>
-				<y> 0 </y>
-				<z> 7.84126 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="WING_TIP_1">
-			<location unit="M">
-				<x> 23.7872 </x>
-				<y> -16.9102 </y>
-				<z> 0.22943 </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>
-		</contact>
-		<contact type="STRUCTURE" name="WING_TIP_2">
-			<location unit="M">
-				<x> 23.7872 </x>
-				<y> 16.9102 </y>
-				<z> 0.22943 </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>
-		</contact>
-	</ground_reactions>
+	<metrics file="Systems/a320-metrics"/>
+	<mass_balance file="Systems/a320-mass-balance"/>
+	<ground_reactions file="Systems/a320-ground-reactions"/>
 	
 	<propulsion>
 		<engine file="leap1a26_1">
@@ -458,19 +146,6 @@ xsi:noNamespaceSchemaLocation="http://jsbsim.sourceforge.net/JSBSim.xsd">
 	<flight_control name="none"/>
 	
 	<aerodynamics file="Systems/a320-aerodynamics.xml"/>
-	
-	<external_reactions>
-		<force name="pushback" frame="BODY">
-			<location unit="M">
-				<x> 7.52385 </x>
-				<y> 0 </y>
-				<z> -3.2846 </z>
-			</location>
-			<direction>
-				<x> 1 </x>
-				<y> 0 </y>
-				<z> 0 </z>
-			</direction>
-		</force>
-	</external_reactions>
+	<external_reactions file="Systems/a320-external-reactions"/>
+
 </fdm_config>
diff --git a/A320neo-PW.xml b/A320neo-PW.xml
index 386850a3..f14833a7 100644
--- a/A320neo-PW.xml
+++ b/A320neo-PW.xml
@@ -17,321 +17,9 @@ xsi:noNamespaceSchemaLocation="http://jsbsim.sourceforge.net/JSBSim.xsd">
 		<description>A32X FDE</description>
 	</fileheader>
 	
-	<metrics>
-		<wingarea  unit="FT2"> 1319.79 </wingarea>
-		<wingspan  unit="FT" >  117.26 </wingspan>
-		<wing_incidence      >    1.03 </wing_incidence>
-		<chord     unit="FT" >   20.76 </chord>
-		<htailarea unit="FT2">  334.24 </htailarea>
-		<htailarm  unit="FT" >   57.88 </htailarm>
-		<vtailarea unit="FT2">  248.79 </vtailarea>
-		<vtailarm  unit="FT" >   57.33 </vtailarm>
-		
-		<location name="AERORP" unit="M">
-			<x> 19.2274 </x>
-			<y> 0 </y>
-			<z> 0.19249 </z>
-		</location>
-		
-		<location name="EYEPOINT" unit="M">
-			<x> 0 </x>
-			<y> 0 </y>
-			<z> 0 </z>
-		</location>
-		
-		<location name="VRP" unit="M">
-			<x> 18.8499 </x>
-			<y> 0 </y>
-			<z> -1.7005004 </z>
-		</location>
-	</metrics>
-	
-	<mass_balance>
-		<ixx unit="SLUG*FT2">  611903 </ixx>
-		<iyy unit="SLUG*FT2"> 1735389 </iyy>
-		<izz unit="SLUG*FT2"> 2301293 </izz>
-
-		<ixy unit="SLUG*FT2">       0 </ixy>
-		<ixz unit="SLUG*FT2">       0 </ixz>
-		<iyz unit="SLUG*FT2">       0 </iyz>
-		<emptywt unit="LBS" >   80431 </emptywt>
-		
-		<location name="CG" unit="M">
-			<x> 18.8231 </x>
-			<y> 0 </y>
-			<z> 0.19249 </z>
-		</location>
-		
-		<pointmass name="Crew">
-			<weight unit="LBS">380</weight>
-			<location name="POINTMASS" unit="M">
-				<x> 5.29845 </x>
-				<y> 0 </y>
-				<z> -0.66384 </z>
-			</location>
-		</pointmass>
-		
-		<pointmass name="PAX">
-			<weight unit="LBS">23000</weight>
-			<location name="POINTMASS" unit="M">
-				<x> 18.8231 </x>
-				<y> 0 </y>
-				<z> 0.19249 </z>
-			</location>
-		</pointmass>
-		
-		<pointmass name="Fwd Cargo">
-			<weight unit="LBS">3000</weight>
-			<location name="POINTMASS" unit="M"> 
-				<x> 13.0849 </x>
-				<y> 0 </y>
-				<z> -1.18112 </z>
-			</location>
-		</pointmass>
-		
-		<pointmass name="Aft Cargo">
-			<weight unit="LBS">3000</weight>
-			<location name="POINTMASS" unit="M">
-				<x> 24.5565 </x>
-				<y> 0 </y>
-				<z> -1.18112 </z>
-			</location>
-		</pointmass>
-	</mass_balance>
-	
-	<ground_reactions>
-		<contact type="BOGEY" name="NOSE_LG">
-			<location unit="M">
-				<x> 7.52385 </x>
-				<y> 0 </y>
-				<z> -4.31395 </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"> 30935.5 </spring_coeff>
-			<damping_coeff unit="LBS/FT/SEC"> 16978.5 </damping_coeff>
-			<max_steer unit="DEG"> 70 </max_steer>
-			<brake_group> NOSE </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>
-			</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>
-			<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>
-			</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>
-			<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>
-			</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>
-		</contact>
-		<contact type="STRUCTURE" name="NOSE_2">
-			<location unit="M">
-				<x> 5.0858 </x>
-				<y> 0 </y>
-				<z> 1.34919 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="BOTTOM_1">
-			<location unit="M">
-				<x> 6.84944 </x>
-				<y> 0 </y>
-				<z> -2.11157 </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>
-		</contact>
-		<contact type="STRUCTURE" name="BOTTOM_2">
-			<location unit="M">
-				<x> 27.7516 </x>
-				<y> 0 </y>
-				<z> -2.10594 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="TOP_1">
-			<location unit="M">
-				<x> 8.9842 </x>
-				<y> 0 </y>
-				<z> 2.00377 </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>
-		</contact>
-		<contact type="STRUCTURE" name="TOP_2">
-			<location unit="M">
-				<x> 30.4145 </x>
-				<y> 0 </y>
-				<z> 1.98661 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="ENG_1">
-			<location unit="M">
-				<x> 14.3962788 </x>
-				<y> -5.755 </y>
-				<z> -3.1750887 </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>
-		</contact>
-		<contact type="STRUCTURE" name="ENG_2">
-			<location unit="M">
-				<x> 14.3962788 </x>
-				<y> 5.755 </y>
-				<z> -3.1750887 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="TAIL_1">
-			<location unit="M">
-				<x> 40.0923 </x>
-				<y> 0 </y>
-				<z> 0.85936 </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>
-		</contact>
-		<contact type="STRUCTURE" name="TAIL_2">
-			<location unit="M">
-				<x> 38.543 </x>
-				<y> 0 </y>
-				<z> 7.84126 </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>
-		</contact>
-		
-		<contact type="STRUCTURE" name="WING_TIP_1">
-			<location unit="M">
-				<x> 23.7872 </x>
-				<y> -16.9102 </y>
-				<z> 0.22943 </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>
-		</contact>
-		<contact type="STRUCTURE" name="WING_TIP_2">
-			<location unit="M">
-				<x> 23.7872 </x>
-				<y> 16.9102 </y>
-				<z> 0.22943 </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>
-		</contact>
-	</ground_reactions>
+	<metrics file="Systems/a320-metrics"/>
+	<mass_balance file="Systems/a320-mass-balance"/>
+	<ground_reactions file="Systems/a320-ground-reactions"/>
 	
 	<propulsion>
 		<engine file="pw1127g_1">
@@ -458,19 +146,6 @@ xsi:noNamespaceSchemaLocation="http://jsbsim.sourceforge.net/JSBSim.xsd">
 	<flight_control name="none"/>
 	
 	<aerodynamics file="Systems/a320-aerodynamics.xml"/>
-	
-	<external_reactions>
-		<force name="pushback" frame="BODY">
-			<location unit="M">
-				<x> 7.52385 </x>
-				<y> 0 </y>
-				<z> -3.2846 </z>
-			</location>
-			<direction>
-				<x> 1 </x>
-				<y> 0 </y>
-				<z> 0 </z>
-			</direction>
-		</force>
-	</external_reactions>
+	<external_reactions file="Systems/a320-external-reactions"/>
+
 </fdm_config>
diff --git a/Systems/a320-external-reactions.xml b/Systems/a320-external-reactions.xml
new file mode 100644
index 00000000..18f7a135
--- /dev/null
+++ b/Systems/a320-external-reactions.xml
@@ -0,0 +1,23 @@
+<!-- Airbus A320 JSBsim -->
+<!-- Joshua Davidson (it0uchpods) -->
+
+<!--
+##############################################
+# Copyright (c) Joshua Davidson (it0uchpods) #
+##############################################
+-->
+
+<external_reactions>
+	<force name="pushback" frame="BODY">
+		<location unit="M">
+			<x> 7.52385 </x>
+			<y> 0 </y>
+			<z> -3.2846 </z>
+		</location>
+		<direction>
+			<x> 1 </x>
+			<y> 0 </y>
+			<z> 0 </z>
+		</direction>
+	</force>
+</external_reactions>
diff --git a/Systems/a320-ground-reactions.xml b/Systems/a320-ground-reactions.xml
new file mode 100644
index 00000000..65aeae80
--- /dev/null
+++ b/Systems/a320-ground-reactions.xml
@@ -0,0 +1,242 @@
+<!-- Airbus A320 JSBsim -->
+<!-- Joshua Davidson (it0uchpods) -->
+
+<!--
+##############################################
+# Copyright (c) Joshua Davidson (it0uchpods) #
+##############################################
+-->
+
+<ground_reactions>
+	<contact type="BOGEY" name="NOSE_LG">
+		<location unit="M">
+			<x> 7.52385 </x>
+			<y> 0 </y>
+			<z> -4.31395 </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"> 30935.5 </spring_coeff>
+		<damping_coeff unit="LBS/FT/SEC"> 16978.5 </damping_coeff>
+		<max_steer unit="DEG"> 70 </max_steer>
+		<brake_group> NOSE </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>
+		</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>
+		<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>
+		</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>
+		<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>
+		</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>
+	</contact>
+	<contact type="STRUCTURE" name="NOSE_2">
+		<location unit="M">
+			<x> 5.0858 </x>
+			<y> 0 </y>
+			<z> 1.34919 </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>
+	</contact>
+	
+	<contact type="STRUCTURE" name="BOTTOM_1">
+		<location unit="M">
+			<x> 6.84944 </x>
+			<y> 0 </y>
+			<z> -2.11157 </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>
+	</contact>
+	<contact type="STRUCTURE" name="BOTTOM_2">
+		<location unit="M">
+			<x> 27.7516 </x>
+			<y> 0 </y>
+			<z> -2.10594 </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>
+	</contact>
+	
+	<contact type="STRUCTURE" name="TOP_1">
+		<location unit="M">
+			<x> 8.9842 </x>
+			<y> 0 </y>
+			<z> 2.00377 </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>
+	</contact>
+	<contact type="STRUCTURE" name="TOP_2">
+		<location unit="M">
+			<x> 30.4145 </x>
+			<y> 0 </y>
+			<z> 1.98661 </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>
+	</contact>
+	
+	<contact type="STRUCTURE" name="ENG_1">
+		<location unit="M">
+			<x> 14.3962788 </x>
+			<y> -5.755 </y>
+			<z> -3.1750887 </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>
+	</contact>
+	<contact type="STRUCTURE" name="ENG_2">
+		<location unit="M">
+			<x> 14.3962788 </x>
+			<y> 5.755 </y>
+			<z> -3.1750887 </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>
+	</contact>
+	
+	<contact type="STRUCTURE" name="TAIL_1">
+		<location unit="M">
+			<x> 40.0923 </x>
+			<y> 0 </y>
+			<z> 0.85936 </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>
+	</contact>
+	<contact type="STRUCTURE" name="TAIL_2">
+		<location unit="M">
+			<x> 38.543 </x>
+			<y> 0 </y>
+			<z> 7.84126 </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>
+	</contact>
+	
+	<contact type="STRUCTURE" name="WING_TIP_1">
+		<location unit="M">
+			<x> 23.7872 </x>
+			<y> -16.9102 </y>
+			<z> 0.22943 </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>
+	</contact>
+	<contact type="STRUCTURE" name="WING_TIP_2">
+		<location unit="M">
+			<x> 23.7872 </x>
+			<y> 16.9102 </y>
+			<z> 0.22943 </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>
+	</contact>
+</ground_reactions>
diff --git a/Systems/a320-mass-balance.xml b/Systems/a320-mass-balance.xml
new file mode 100644
index 00000000..e5182d24
--- /dev/null
+++ b/Systems/a320-mass-balance.xml
@@ -0,0 +1,61 @@
+<!-- Airbus A320 JSBsim -->
+<!-- Joshua Davidson (it0uchpods) -->
+
+<!--
+##############################################
+# Copyright (c) Joshua Davidson (it0uchpods) #
+##############################################
+-->
+
+<mass_balance>
+	<ixx unit="SLUG*FT2">  611903 </ixx>
+	<iyy unit="SLUG*FT2"> 1735389 </iyy>
+	<izz unit="SLUG*FT2"> 2301293 </izz>
+
+	<ixy unit="SLUG*FT2">       0 </ixy>
+	<ixz unit="SLUG*FT2">       0 </ixz>
+	<iyz unit="SLUG*FT2">       0 </iyz>
+	<emptywt unit="LBS" >   80431 </emptywt>
+	
+	<location name="CG" unit="M">
+		<x> 18.8231 </x>
+		<y> 0 </y>
+		<z> 0.19249 </z>
+	</location>
+	
+	<pointmass name="Crew">
+		<weight unit="LBS">380</weight>
+		<location name="POINTMASS" unit="M">
+			<x> 5.29845 </x>
+			<y> 0 </y>
+			<z> -0.66384 </z>
+		</location>
+	</pointmass>
+	
+	<pointmass name="PAX">
+		<weight unit="LBS">23000</weight>
+		<location name="POINTMASS" unit="M">
+			<x> 18.8231 </x>
+			<y> 0 </y>
+			<z> 0.19249 </z>
+		</location>
+	</pointmass>
+	
+	<pointmass name="Fwd Cargo">
+		<weight unit="LBS">3000</weight>
+		<location name="POINTMASS" unit="M"> 
+			<x> 13.0849 </x>
+			<y> 0 </y>
+			<z> -1.18112 </z>
+		</location>
+	</pointmass>
+	
+	<pointmass name="Aft Cargo">
+		<weight unit="LBS">3000</weight>
+		<location name="POINTMASS" unit="M">
+			<x> 24.5565 </x>
+			<y> 0 </y>
+			<z> -1.18112 </z>
+		</location>
+	</pointmass>
+</mass_balance>
diff --git a/Systems/a320-metrics.xml b/Systems/a320-metrics.xml
new file mode 100644
index 00000000..ea0d13cd
--- /dev/null
+++ b/Systems/a320-metrics.xml
@@ -0,0 +1,37 @@
+<!-- Airbus A320 JSBsim -->
+<!-- Joshua Davidson (it0uchpods) -->
+
+<!--
+##############################################
+# Copyright (c) Joshua Davidson (it0uchpods) #
+##############################################
+-->
+
+<metrics>
+	<wingarea  unit="FT2"> 1319.79 </wingarea>
+	<wingspan  unit="FT" >  117.26 </wingspan>
+	<wing_incidence      >    1.03 </wing_incidence>
+	<chord     unit="FT" >   20.76 </chord>
+	<htailarea unit="FT2">  334.24 </htailarea>
+	<htailarm  unit="FT" >   57.88 </htailarm>
+	<vtailarea unit="FT2">  248.79 </vtailarea>
+	<vtailarm  unit="FT" >   57.33 </vtailarm>
+	
+	<location name="AERORP" unit="M">
+		<x> 19.2274 </x>
+		<y> 0 </y>
+		<z> 0.19249 </z>
+	</location>
+	
+	<location name="EYEPOINT" unit="M">
+		<x> 0 </x>
+		<y> 0 </y>
+		<z> 0 </z>
+	</location>
+	
+	<location name="VRP" unit="M">
+		<x> 18.8499 </x>
+		<y> 0 </y>
+		<z> -1.7005004 </z>
+	</location>
+</metrics>