From b0ee215bed0bdce25907a2411c49619c063f6464 Mon Sep 17 00:00:00 2001
From: Bertrand Coconnier <bcoconni@users.sourceforge.net>
Date: Thu, 5 Jul 2018 00:15:43 +0200
Subject: [PATCH] [JSBSim] Tentative fix for the P factor

---
 src/FDM/JSBSim/models/propulsion/FGPropeller.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/FDM/JSBSim/models/propulsion/FGPropeller.cpp b/src/FDM/JSBSim/models/propulsion/FGPropeller.cpp
index 63c057c34..9f9c7ba8d 100644
--- a/src/FDM/JSBSim/models/propulsion/FGPropeller.cpp
+++ b/src/FDM/JSBSim/models/propulsion/FGPropeller.cpp
@@ -255,7 +255,7 @@ double FGPropeller::Calculate(double EnginePower)
     double tangentialVel = localAeroVel.Magnitude(eV, eW);
 
     if (tangentialVel > 0.0001) {
-      double angle = atan2(tangentialVel, localAeroVel(eU));
+      double angle = atan2(tangentialVel, localAeroVel(eU) + Vinduced);
       double factor = Sense * P_Factor * angle / tangentialVel;
       SetActingLocationY( GetLocationY() + factor * localAeroVel(eW));
       SetActingLocationZ( GetLocationZ() + factor * localAeroVel(eV));