| As a key equipment to the exploration of marine resources, human occupied vehicles(HOV) have been developed all over the world. With the limitation of weight and space, HOV are not good at self-sufficiency and endurance, and generally require a mothership to provide support. When working at sea, HOV is launched from the mothership to the sea, and retrieved when the work is done or malfunctions occur. Combined with the wave-induced motion, the narrow space between the HOV and the mothership makes the recovery work complicated and dangerous. So the launch and recovery system directly influences the performance and security of the submersible vehicles.According to the relevant rules, as well as the structural and functional features, works on the design of the launch-retrieval system and its working process based on the size and performance of deep-water submersible vehicles with light weight. The structural design work determines the structural size of the system and the properties of each component And a 3D model is created. The working process design concludes the launch and recovery process and clarifies the operating principles of each componentBased on the structural design, this paper carries out a model experiment According to the motion response at the stem of the mothership model in waves, the rope tension and the motion of HOV are calculated, together with the motion response of the mothership carrying a submersible vehicle.At last, a motion and strength analysis on the mothership carrying a HOV in the stem area is performed with the stimulation by Simulink software. The rope swing angel ? and tension amplitude under various wave circular frequencies are obtained. And a series of stimulations are conducted to find out the influence induced by wave circular frequency ?, horizontal acceleration amplitude Ax, vertical acceleration amplitude Az?phase difference between horizontal and vertical acceleration ?, rope length l,swing angle ? and tension undulate amplitude ?T. |
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