Hydrodynamical Calculation and Performance of Voith Schneider Propellers (cycloid) in ship

Voith Schneider Propeller (VSP) was invented as a propeller with a high Thrust and control force by Ernst Schneider in 1926. In this propeller, Thrust is provided by changing the steering center. In addition to providing Thrust, VSP can also provide control force. Therefore there is no need to install rudder in vessels with VSP. VSPs are mainly used in Tug boats, coastal ships and those vessels that demand high maneuverability. In the present study, first, changes of arm length and angle of attack for every position of blades are determined using geometry equations. Then, after determining lift and drag forces on blades profile using Oscillating motion, hydrodynamic coefficients are determined.