Design and analysis of marine propeller with new blade sections

Abstract

The main purpose of this study is to propose a new method for designing two-dimensional blade sections. In this work, two marine propellers are investigated. The blade section of the newly designed propeller, as compared with that of the MAU5-80 propeller, has a certain angle of attack. Except for the ordinate of the two-dimensional blade section, other parameters of the modified propeller, such as the blade section thickness and the area ratio of the propeller, are the same as those of the MAU5-80 propeller. When designing the new propeller model, the two-dimensional blade section, which has the highest efficiency among all blade sections at the same radius, is used as the blade section of the modified propeller. The numerical result indicates that when the thrust loading coefficient is greater than 1, the propulsive efficiency of the modified propeller is comparable to that of the MAU5-80 propeller. However, when the thrust loading coefficient is less than 1, the propulsive efficiency of the modified propeller is significantly higher than that of the MAU5-80 propeller.