Analytical formulation of AUV unpowered diving steady motion

Abstract

The mathematical model of AUV unpowered diving motion was modeled on the basis of an unpowered unrestrained model test. By analyzing the characteristics of the steady motion, it can be concluded that the diving depth rate U/sub z/ and trimming angle /spl theta/ are important parameters to describe the steady motion. The analytical expressions of the diving depth rate U/sub z/ and trimming angle /spl theta/ are obtained, then U/sub z/ and /spl theta/ can be determined quickly and precisely. This method provides great convenience in practical applications.