From 5015c6270bd3fb1a34ac496d777fde9a4b80bb96 Mon Sep 17 00:00:00 2001
From: philipphansmann <Philipp Hansmann>
Date: Tue, 25 Feb 2025 16:09:28 +0100
Subject: [PATCH] Fixed bug where performance_assessment stalls due to aero
returning a NaN as drag
---
performance_assessment/src/taw/defaultMethods/aircraft.cpp | 3 +++
1 file changed, 3 insertions(+)
diff --git a/performance_assessment/src/taw/defaultMethods/aircraft.cpp b/performance_assessment/src/taw/defaultMethods/aircraft.cpp
index 17259384..d1951096 100644
--- a/performance_assessment/src/taw/defaultMethods/aircraft.cpp
+++ b/performance_assessment/src/taw/defaultMethods/aircraft.cpp
@@ -216,6 +216,9 @@ double aircraft::ROC(double Mass, double Alt, double Mach, double fACC, string C
} catch (const std::string& e) {
tempDrag = ac_thrust; // In case of missing polar data a gamma of 0 is forced
}
+ if (std::isnan(tempDrag)) {
+ tempDrag = ac_thrust; // In case of missing polar data (but NaN-flavoured)
+ }
double tempGamma = asin((ac_thrust - tempDrag) / (G_FORCE * Mass) / (1. + fACC)); // because not with const. TAS but with const. IAS or Ma is risen
//--> Introduction of facc: Commutation factor: facc = V/g * dV/dh; see table 11.1 p.232
double tempLiftCoefficient = 2.*(G_FORCE * Mass * cos(tempGamma))
--
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