Fig.8 Conditions of the cavity volume being varied at each blade element for conventional
and highly skewed propellers
Figure 9 shows the relation between the skew angle and the reduced amount of the water pressure fluctuation. You will see that the water pressure fluctuation is reduced by half at the skew angle of around 40 degrees. Highly skewed propeller is extremely effective for reducing the propeller exciting force, thereby improving the comfortableness aboard. In case, however, of highly skewed propeller to be applied, due consideration will be required from the viewpoint of its peculiarly special configuration. For that purpose, it has become requisite for the blade's strength to be calculated by means of finite element method (FEM).
Fig.9 Relation between the skew angle and the reduced amount of the water pressure fluctuation
