Simulation research and optimization design on towed system of manned submersible

Abstract

This article presents a digital virtual design for the towed system embarked by manned submersible, which builds an overall design of the compositions, the loads and the operation modes for the system. It elaborates an optimized design for towed vehicle, towed cable and winch. This towed vehicle design takes the needs of hydraulic resistance, posture and sail stability into consideration, and uses CFD simulation to calculate the characteristics of its fluid resistance. It also draws a detailed design for winch reel, cable metering device, frame, transmission, rope-pressed device, revolution-meter and inlet/outlet channel. Furthermore, it simulates the motion characteristic of the system, and analyses the motion modes of different manned submersibles related to current velocity and varied cable lengths, which also provides the references for the position of weight carries related to different detection speed.