Propulsive efficiency calculation exception

alopezrivera · Sep 11, 2021 · 45e6dcd · 45e6dcd
1 parent fea647c
commit 45e6dcd
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/huracan/engine.py b/huracan/engine.py
@@ -647,7 +647,7 @@ def efficiency_prop(self):
         """
         Stream propulsive efficiency.
         """
-        return 2/(1+self.v_exit()/self.gas.v_0)
+        return 2/(1+self.v_exit()/self.gas.v_0) if self.gas.v_0 > 0 else 0
 
     def efficiency_total(self):
         if hasattr(self, 'system'):