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-rw-r--r--engine.py5
1 files changed, 3 insertions, 2 deletions
diff --git a/engine.py b/engine.py
index bc08a43..f1da646 100644
--- a/engine.py
+++ b/engine.py
@@ -6,8 +6,9 @@ class Engine():
         self.max_flow_rate = max_flow_rate
         self.isp = isp
 
-    def thrust(self, throttle: int):
-        return self.flow_rate(throttle) * self.isp
+    def thrust(self, throttle: int, g: float):
+        #https://www.grc.nasa.gov/www/k-12/airplane/specimp.html
+        return self.flow_rate(throttle) * self.isp * g
 
     def flow_rate(self, throttle: int):
         return self.max_flow_rate * (throttle / 100)
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