빔형성 방법을 이용한 함정 추진기 소음 위치 추정에 대한 실험적 연구

Abstract

In this study, an experimental investigation was conducted to estimate the location of propeller cavitation using a beamforming method with a hydrophone array. The sensors were mounted on the hull surface above the port side propeller and arranged in a single-armed spiral. To validate the performance of the sensor array, a test was performed using a reference source ITC-1032. The results showed that the location of the sound source was well predicted. A scaled model-ship test was conducted for various test conditions in the large cavitation tunnel of KRISO. Propeller cavitation was observed using a video camera with stroboscopes, and the propeller noise were measured by on-board sensors. From the observations and estimations, we concluded that the dominant cavitation was well estimated.