Ship Wake Ultrasound Blanking Mechanism And Technology Research

It was thought hard to manually imitate and suppress the ship wake, the inherent character of ship. The principle of current ship wake guided torpedo on service is destroying the ship by following and tracing the micro bubbles reside in ship wake filed. So how to dispel the ship wake is the key point for anti-ship wake guided torpedo. This paper does researches in current technologies of anti-ship wake guided torpedo in and out of China and ship wake guided torpedo's guidance principle and trajectory of different kinds of anti-ship wake guided torpedo. This paper also does some researches in ultrasonic dusty remove and related technologies. Based on these researches and referred to patent USP5787048 of USNS, this dissertation does the theoretical research and experiment in ultrasonic field at high frequency's suppression of micro bubbles. The result shows that it is feasible to suppress the micro bubbles by using ultrasonic at high frequency and the effect is highly related to the ultrasonic transducer's frequency. According to these findings ,this paper tries different frequencies by imitating the ship wake in laboratory and the result certifies that different frequency do have different suppression effect while the ultrasonic transducer at 1.65MHZ has the best effect. The experiment also finds that at the same frequency, the bigger the power is, the better the effect is, and the result is in coincidence with theoretical research. This conclusion will introduce a new way for Chinese navy's technological exploration in sea war.