From b85838b77058c8991265806376547ac2e49a3a11 Mon Sep 17 00:00:00 2001
From: ThorstenB <brehmt@gmail.com>
Date: Wed, 12 Jan 2011 20:13:57 +0100
Subject: [PATCH] Avoid div-by-zero and NaN-property error required for
 non-engine aircraft (UFO, gliders).

---
 Aircraft/Generic/aar.nas | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Aircraft/Generic/aar.nas b/Aircraft/Generic/aar.nas
index de77a5936..114d96bf8 100644
--- a/Aircraft/Generic/aar.nas
+++ b/Aircraft/Generic/aar.nas
@@ -152,7 +152,10 @@ var update_loop = func {
 
 	setprop("/consumables/fuel/total-fuel-gals", gals);
 	setprop("/consumables/fuel/total-fuel-lbs", lbs);
-	setprop("/consumables/fuel/total-fuel-norm", gals / cap);
+	if (cap == 0)
+		setprop("/consumables/fuel/total-fuel-norm", 0);
+	else
+		setprop("/consumables/fuel/total-fuel-norm", gals / cap);
 
 	foreach (var e; engines)
 		e.getNode("out-of-fuel", 1).setBoolValue(out_of_fuel);