Resynced with jsbsim tree.

aircraft/ball/reset00.xml

 <?xml version="1.0"?>
 <initialize name="reset00">
   <!--
-    This file sets up the mk82 to start off
-    from altitude.
-    Velocity of Earth surface at equator: 1525.92 ft/sec.
+    This file sets up the ball in orbit.
+    Velocity of Earth surface at equator:                   1525.92 ft/sec. at ground level.
+    Velocity of Earth surface-synchronous point at equator: 1584.26 ft/sec. at 800 kft.
+    1584.2593825 + 23869.9759596 = 25454.235342 ft/sec
   -->
-<!--  <ubody unit="FT/SEC"> 24063.28275  </ubody> -->
-  <!-- Circular orbit at equator -->
-  <!-- 25464.28 ft/sec inertial velocity - s/b 25454.2 ft/sec. -->
-  <!-- <ubody unit="FT/SEC"> 23938.39  </ubody> -->
-<!--  <ubody unit="FT/SEC"> 23889.15  </ubody> -->
-  <ubody unit="FT/SEC"> 23889.14273  </ubody>
+  <ubody unit="FT/SEC"> 23869.9759596 </ubody> 
   <latitude unit="DEG">     0.0  </latitude>
   <longitude unit="DEG">    0.0  </longitude>
   <psi unit="DEG">         90.0  </psi>

aircraft/f16/Systems/.cvsignore

+Makefile
+Makefile.in

aircraft/fokker100/Makefile.am

+SUBDIRS = \
+	Systems 
 aircraft_fokker100dir = ${pkgdatadir}/aircraft/fokker100
 aircraft_fokker100_DATA = \
-	fokker100.xml 
+	xf100.xml \
+	fokker100.xml \
+	fokker70.xml 
 EXTRA_DIST=$(aircraft_fokker100_data)

aircraft/fokker100/Systems/.cvsignore

+Makefile
+Makefile.in

aircraft/fokker100/Systems/Makefile.am

+aircraft_fokker100_Systemsdir = ${pkgdatadir}/aircraft/fokker100/Systems
+aircraft_fokker100_Systems_DATA = \
+	pushback.xml 
+EXTRA_DIST=$(aircraft_fokker100_Systems_data)

aircraft/fokker100/Systems/pushback.xml

+<?xml version='1.0' encoding='UTF-8' ?>
+<system name="pushback">
+ <property>/sim/model/pushback/target-speed-fps</property>
+ <channel name="Pushback">
+
+   <switch name="systems/pushback/linked">
+     <default value="-1"/>
+     <test value="0">
+       /sim/model/pushback/position-norm gt 0.95
+       /gear/gear/wow == 1
+       gear/unit[0]/wheel-speed-fps lt 50
+     </test>
+   </switch>
+
+   <summer name="systems/pushback/speed-error">
+     <input>/sim/model/pushback/target-speed-fps</input>
+     <input>-gear/unit[0]/wheel-speed-fps</input>
+   </summer>
+
+   <pid name="systems/pushback/force">
+     <input>systems/pushback/speed-error</input>
+     <kp>/sim/model/pushback/kp</kp>
+     <ki>/sim/model/pushback/ki</ki>
+     <kd>/sim/model/pushback/kd</kd>
+     <trigger>systems/pushback/linked</trigger>
+     <output>/sim/model/pushback/force</output>
+   </pid>
+
+   <switch name="systems/pushback/force-output">
+     <default value="0"/>
+     <test value="systems/pushback/force">
+       systems/pushback/linked == 0
+     </test>
+     <output>external_reactions/pushback/magnitude</output>
+   </switch>
+
+ </channel>
+</system>
\ No newline at end of file