Abstract:In the area of radar application, cooling system is an necessary part of the whole launch system. Compared to other cooling systems, the water cooling system is better in efficiency and application value to the shipborne radar system. Through the analysis of shipborne HPA water cooling system working status and its limit, the improvements were put forward. Based on existing equipments and their parameters, the whole improved scheme was described from such aspects as operating principles, flow calculation, design and improvement of control protection system, some key segments and details that should be paid special attention were pointed out. In this paper, shipborne HPA water cooling system was taken as a prototype, there are demonstration effects to other radar water cooling system.