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Authors
Luca Pivano; Thor Inge Fossen; Tor Arne Johansen

Identifier
10.3182/20060329-3-AU-2901.00045

Index Terms
identification,marine,modeling,nonlinear,propulsion

Abstract
This paper proposes a nonlinear dynamics model for a marine propeller able to reproduce the propeller thrust over the full four-quadrant range of propeller shaft speed and vessel speed. A two-state model has been identified from experimental data. The model includes a state equation for the propeller shaft speed and one that describes the dynamics of the axial flow velocity. The model reproduces accurately propeller thrust and torque over a wide range of operation.

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