Development of buoyancy regulating system for underwater glider

YANG Hai1，LIU Yanji2 1 Shanghai Division，China Ship Development and Design Center，Shanghai 201108，China 2 State Key Laboratory of Ocean Engineering，Shanghai Jiao Tong University，Shanghai 200240，China

Abstract：［Objectives］ Buoyancy regulating system is a key component of an underwater glider for controlling submerging and surfacing statuses and gliding speed of the underwater glider. To further study the buoyancy regulating system，［Methods］we carry out theoretical analysis and CFD for the underwater glider and its buoyancy regulating system to obtain the buoyancy regulating value，which is an important design parameter；develop a buoyancy regulating system with both oil outlet and oil return passages，that is，a high-pressure plunger pump for oil outlet in deep water and a low-energy gear pump for oil return in shallow water. We conduct the tests for the oil outlet and oil return characteristics and the energy consumption under different pressure conditions.［Results］The results show that the oil outlet is normal under the pressure of 2.5 MPa and the oil return is normal under atmospheric pressure. The developed test device can simulate the marine pressure in the actual operating environment of the underwater glider. ［Conclusions］ The study results can provide useful references for the engineering application of the buoyancy regulating system. Key words：underwater glider；buoyancy regulating system；marine pressure environment simulator

收稿日期：2018 - 04 - 02 网络首发时间：2018-10-19 14:16基金项目：中国舰船研究设计中心研发基金资助项目（YF15-06-（27）20）作者简介：杨海（通信作者），男，1981年生，博士，工程师。研究方向：舰船动力，无人系统。E-mail：sjtu240yh@163.com刘雁集，男，1987年生，博士。研究方向：水下滑翔机。E-mail：y.j.liu@sjtu.edu.cn