From a365263ac242cecf7aab18523763bd15f1fcf2a4 Mon Sep 17 00:00:00 2001
From: nancynguyen1014 <74472825+nancynguyen1014@users.noreply.github.com>
Date: Mon, 18 Jan 2021 23:04:15 -0500
Subject: [PATCH] Update ORBrakeSimulationListener.java

---
 src/net/sf/openrocket/ORBrake/ORBrakeSimulationListener.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/net/sf/openrocket/ORBrake/ORBrakeSimulationListener.java b/src/net/sf/openrocket/ORBrake/ORBrakeSimulationListener.java
index 95b74be..ee479a3 100644
--- a/src/net/sf/openrocket/ORBrake/ORBrakeSimulationListener.java
+++ b/src/net/sf/openrocket/ORBrake/ORBrakeSimulationListener.java
@@ -129,7 +129,7 @@ public double postSimpleThrustCalculation(SimulationStatus status, double thrust
 	    	}
 	    	
 	    	// Differential term
-	    	diff = -( 2*Kd*(measure-prev_measure) + (2*tau-T)*diff ) / (2*tau+T);
+	    	diff = ( -2*Kd*(measure-prev_measure) + (2*tau-T)*diff ) / (2*tau+T);
 	    	
 	    	// Output 
 	    	out = prop + inte + diff;