| 摘要 |
The present invention relates to a propeller cap structure. According to the present invention, an existing propeller boss cap fin (PBCF) has the problems that there is difficulty in production and that the production costs are high due to necessity to a precision process. To solve the problems, the propeller cap of the present invention is provided to reduce hub vortex cavitation which is generated at the back of a propeller using a complex propeller cap structure of coupling a diffuse propeller cap to the end of an existing contractive propeller cap. The propeller cap of the present invention can be easily produced with the cheap costs due to simpler elements compared to the existing PBCF, reduce noises and vibrations of a vessel, prevent erosion and corrosion of a rudder, and reduce fuel by improving propulsion efficiency. |
