From 7a100e3efe991acc30d861fa0c489a114b4efcd4 Mon Sep 17 00:00:00 2001
From: Bertrand Coconnier <bcoconni@users.sourceforge.net>
Date: Sat, 18 Jun 2022 11:43:29 +0200
Subject: [PATCH] Temporary fix for issue #654.

---
 src/models/FGGasCell.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/models/FGGasCell.cpp b/src/models/FGGasCell.cpp
index 9e201415e0..ad16e1d038 100644
--- a/src/models/FGGasCell.cpp
+++ b/src/models/FGGasCell.cpp
@@ -326,7 +326,7 @@ void FGGasCell::Calculate(double dt)
     const double VolumeValved =
       ValveOpen * ValveCoefficient * DeltaPressure * dt;
     Contents =
-      max(0.0, Contents - Pressure * VolumeValved / (R * Temperature));
+      max(1E-8, Contents - Pressure * VolumeValved / (R * Temperature));
   }
 
   //-- Update ballonets. --