Dynamic Analysis of Underwater Torpedo during Straight-Line Navigation

Author:

Zhao Bowen12,Sun Jiyuan2,Zhang Dapeng1ORCID,Zhu Keqiang3,Jiang Haoyu4

Affiliation:

1. Ship and Maritime College, Guangdong Ocean University, Zhanjiang 524088, China

2. Ocean College, Zhejiang University, Zhoushan 316021, China

3. Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China

4. School of Electronics and Information Engineering, Guangdong Ocean University, Zhanjiang 316021, China

Abstract

Torpedoes play an irreplaceable role in naval warfare; therefore, it is significant to study the dynamic response of the direct navigation of torpedoes. In order to study the dynamic response of torpedoes under different Munk moment coefficients, the dynamic equation of torpedoes is established based on the momentum theorem and the momentum moment theorem. The linear motion mathematical model of torpedoes is obtained. The relationship between the torpedo and the Munk moment coefficient is derived. The straight-line motion model of the torpedo under different Munk moments is established, and the dynamic properties of the space motion of the torpedo are analyzed. It is found that the Munk moment coefficient increase will lead to an increase in the deflection of the torpedo’s direct motion on each degree of freedom, and the Munk moment coefficient is related to the additional mass matrix. During the design of the torpedo, the added mass should be reduced by changing the shape of the torpedo as much as possible so as to reduce the pitch moment, yaw, and roll moments of the torpedo.

Funder

Program for Scientific Research Start-up Funds of Guangdong Ocean University

Zhanjiang Marine Youth Talent Project—Comparative Study and Optimization of Horizontal Lifting of Subsea Pipeline

National Natural Science Foundation of China

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

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