From fa5a7071281c1a892f165ef093bf8a3f27ddc38c Mon Sep 17 00:00:00 2001
From: david <david>
Date: Fri, 12 Apr 2002 17:24:17 +0000
Subject: [PATCH] JSBSim change:

Set an arbitrary cutoff (5RPM) where friction causes the propeller to
stop spinning.
---
 src/FDM/JSBSim/FGPropeller.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/FDM/JSBSim/FGPropeller.cpp b/src/FDM/JSBSim/FGPropeller.cpp
index 1d9a9e0af..1bd9118ef 100644
--- a/src/FDM/JSBSim/FGPropeller.cpp
+++ b/src/FDM/JSBSim/FGPropeller.cpp
@@ -177,6 +177,12 @@ double FGPropeller::Calculate(double PowerAvailable)
   ExcessTorque = PowerAvailable / omega;
   RPM = (RPS + ((ExcessTorque / Ixx) / (2.0 * M_PI)) * deltaT) * 60.0;
 
+				// The friction from the engine should
+				// stop it somewhere; I chose an
+				// arbitrary point.
+  if (RPM < 5.0)
+    RPM = 0;
+
   vMn = fdmex->GetRotation()->GetPQR()*vH + vTorque*Sense;
 
   return Thrust; // return thrust in pounds
-- 
2.39.5