Reliability Assessment Method for the Underwater Motion Process of a Rigid Body

This paper focuses on the reliability assessment of the underwater motion process of a rigid body, particularly in the context of underwater missile launches. The combination of missiles and underwater launch platforms offers significant advantages, such as long range, high accuracy, and strong attack capabilities. However, the complex multiphase flow environment during underwater launches poses challenges to the reliability of the mission. This study aims to develop a reliability assessment method for the underwater launch process by constructing a belief reliability model and quantifying its uncertainty. The research considers the impact of marine environmental factors and launch strategies on the performance of the underwater launch process and provides a scientific basis and methodology for different scenarios and reliability requirements.