Abstract
Propeller cavitation contributes to underwater radiated noise (URN), which affects the probability of detection and survivability, especially for naval vessels. To reduce noise induced by propeller cavitation, several naval vessels have adopted the propeller air injection system. However, there are insufficient case studies on noise reduction; thus, it is necessary to verify the effect of this system on a full-scale ship. This study attempts to address this by measuring the URN during trials and analyzing the effect of the propeller air injection system based on the range of speed. As a result, we found that noise is reduced at specific frequency bands and the characteristics of the modulation signal are changed.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
