Frederic Bouvier:

[flightgear.git] / src / FDM / JSBSim / FGLGear.cpp

diff --git a/src/FDM/JSBSim/FGLGear.cpp b/src/FDM/JSBSim/FGLGear.cpp
index dd0325b109ff9251ecd689b46725dc9cda460a8e..6c9d6b209c32aedde3f38a109b0c86c7882a14dc 100644 (file)
--- a/src/FDM/JSBSim/FGLGear.cpp
+++ b/src/FDM/JSBSim/FGLGear.cpp
@@ -353,9 +353,9 @@ FGColumnVector3& FGLGear::Force(void)
       if (RollingWhlVel == 0.0 && SideWhlVel == 0.0) {
         WheelSlip = 0.0;
       } else if (fabs(RollingWhlVel) < 1.0) {
-        WheelSlip = 0.05*radtodeg*atan2(SideWhlVel, RollingWhlVel) + 0.95*WheelSlip;
+        WheelSlip = 0.05*radtodeg*atan2(SideWhlVel, fabs(RollingWhlVel)) + 0.95*WheelSlip;
       } else {
-        WheelSlip = radtodeg*atan2(SideWhlVel, RollingWhlVel);
+        WheelSlip = radtodeg*atan2(SideWhlVel, fabs(RollingWhlVel));
       }
 /*
       double maxdeltaSlip = 0.5*deltaT;