diff --git a/rocket_twin/drivers/mission.py b/rocket_twin/drivers/mission.py
index be88a26..bafcbaa 100644
--- a/rocket_twin/drivers/mission.py
+++ b/rocket_twin/drivers/mission.py
@@ -45,7 +45,7 @@ def __init__(
         init_flight = {
             "rocket.flying": True,
             "rocket.engine.force_command": 1.0,
-            "rocket.tank.w_out_temp": 3.0,
+            "rocket.tank.w_out_max": 3.0,
             "g_tank.w_in": 0.0,
             "g_tank.w_command": 0.0,
         }
diff --git a/rocket_twin/systems/tank/tank.py b/rocket_twin/systems/tank/tank.py
index 593ec60..a631b49 100644
--- a/rocket_twin/systems/tank/tank.py
+++ b/rocket_twin/systems/tank/tank.py
@@ -31,7 +31,7 @@ def setup(self):
         self.add_inward("w_in", 0.0, desc="Fuel income rate", unit="kg/s")
 
         # Flux control
-        self.add_inward("w_out_temp", 0.0, desc="Fuel output rate", unit="kg/s")
+        self.add_inward("w_out_max", 0.0, desc="Fuel output rate", unit="kg/s")
         self.add_inward("w_command", 1.0, desc="Fuel output control variable", unit="")
 
         # Transient
@@ -44,6 +44,6 @@ def setup(self):
         self.add_outward("w_out", 0.0, desc="Fuel output rate", unit="kg/s")
 
     def compute(self):
-        self.w_out = self.w_out_temp * self.w_command
+        self.w_out = self.w_out_max * self.w_command
         self.dw_dt = self.w_in - self.w_out
         self.weight = self.weight_s + self.weight_p
diff --git a/rocket_twin/tests/test_flying_rocket.py b/rocket_twin/tests/test_flying_rocket.py
index 0e02b4d..7db5cb4 100644
--- a/rocket_twin/tests/test_flying_rocket.py
+++ b/rocket_twin/tests/test_flying_rocket.py
@@ -16,7 +16,7 @@ def test_run_once(self):
             "rocket.flying": True,
             "rocket.engine.force_command": 1.0,
             "rocket.tank.weight_p": "rocket.tank.weight_max",
-            "rocket.tank.w_out_temp": 3.0,
+            "rocket.tank.w_out_max": 3.0,
             "g_tank.w_in": 0.0,
             "g_tank.weight_p": 0.0,
             "g_tank.w_command": 0.0,
diff --git a/rocket_twin/tests/test_mission.py b/rocket_twin/tests/test_mission.py
index 92da93d..b6c63ae 100644
--- a/rocket_twin/tests/test_mission.py
+++ b/rocket_twin/tests/test_mission.py
@@ -15,10 +15,10 @@ def test_run_once(self):
             "g_tank.weight_p": "g_tank.weight_max",
             "rocket.engine.force_command": 0.0,
             "rocket.tank.weight_p": 0.0,
-            "rocket.tank.w_out_temp": 0.0,
+            "rocket.tank.w_out_max": 0.0,
             "g_tank.w_command": 1.0,
             "g_tank.w_in": 0.0,
-            "g_tank.w_out_temp": 3.0,
+            "g_tank.w_out_max": 3.0,
         }
 
         stop = "rocket.tank.weight_p <= 0."
diff --git a/rocket_twin/tests/test_refuel_rocket.py b/rocket_twin/tests/test_refuel_rocket.py
index 1a298eb..6aa6b85 100644
--- a/rocket_twin/tests/test_refuel_rocket.py
+++ b/rocket_twin/tests/test_refuel_rocket.py
@@ -14,11 +14,11 @@ def test_run_once(self):
         init = {
             "rocket.engine.force_command": 0.0,
             "rocket.tank.weight_p": 0.0,
-            "rocket.tank.w_out_temp": 0.0,
+            "rocket.tank.w_out_max": 0.0,
             "g_tank.w_command": 1.0,
             "g_tank.weight_p": "g_tank.weight_max",
             "g_tank.w_in": 0.0,
-            "g_tank.w_out_temp": 3.0,
+            "g_tank.w_out_max": 3.0,
         }
 
         stop = "rocket.tank.weight_p >= rocket.tank.weight_max"
diff --git a/rocket_twin/tests/test_sequences.py b/rocket_twin/tests/test_sequences.py
index 082bb80..ff8c99b 100644
--- a/rocket_twin/tests/test_sequences.py
+++ b/rocket_twin/tests/test_sequences.py
@@ -32,7 +32,7 @@ def test_fuel(self):
             {
                 "name": "fuel",
                 "type": "transient",
-                "init": {"g_tank.w_out_temp": 1.0, "g_tank.w_command": 1.0},
+                "init": {"g_tank.w_out_max": 1.0, "g_tank.w_command": 1.0},
                 "dt": 0.1,
                 "stop": "rocket.tank.weight_p == rocket.tank.weight_max",
             }
@@ -58,7 +58,7 @@ def test_flight(self):
                 "type": "transient",
                 "init": {
                     "rocket.flying": True,
-                    "rocket.tank.w_out_temp": 0.5,
+                    "rocket.tank.w_out_max": 0.5,
                     "g_tank.w_command": 0.0,
                     "rocket.engine.force_command": 1.0,
                     "rocket.tank.w_command": 1.0,
diff --git a/rocket_twin/tests/test_tank.py b/rocket_twin/tests/test_tank.py
index 096bb6d..eeccbc3 100644
--- a/rocket_twin/tests/test_tank.py
+++ b/rocket_twin/tests/test_tank.py
@@ -12,7 +12,7 @@ def test_fuel(self):
         driver = sys.add_driver(RungeKutta(order=4, dt=0.1))
         driver.time_interval = (0, 5)
 
-        init = {"w_in": 3.0, "w_out_temp": 0.0, "weight_p": 0.0}
+        init = {"w_in": 3.0, "w_out_max": 0.0, "weight_p": 0.0}
 
         driver.set_scenario(init=init)
 
@@ -25,7 +25,7 @@ def test_flight(self):
         driver = sys.add_driver(RungeKutta(order=4, dt=0.1))
         driver.time_interval = (0, 5)
 
-        init = {"w_in": 0.0, "w_out_temp": 3.0, "weight_p": 15.0}
+        init = {"w_in": 0.0, "w_out_max": 3.0, "weight_p": 15.0}
 
         driver.set_scenario(init=init)