Marine Rudder Hydrodynamic Lift Calculator
Calculate rudder hydrodynamic lift ($F_L$), drag ($F_D$), normal force ($F_N$), rudder stock torque ($Q_R$), and ship initial turning yaw moment.
Rudder Geometry & Helm Angle
Typically 1.5% - 2.0% of (L * T)
Max standard helm: 35°
0.26 - 0.28 for balanced rudder
Hydrodynamic Forces & Stock Torque
Normal Force (F_N)
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Rudder Stock Torque (Q_R)
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Lift Force F_L
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Drag Force F_D
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Yaw Moment
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Rudder Hydrodynamics & Steering Assessment
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