Abstract:The role of underwater vehicle(UUV) in Marine strategy is becoming more and more significant, but the existing UUV generally has the problem of short working time and small range, and the endurance is one of the main shortcomings of UUV. In order to study the possibility of UUV floating without power after underwater shutdown to improve endurance, this paper by establishing UUV space motion model, sea water density model, UUV capsule compression model, buoyancy material compression water absorption model, the UUV will shut down the key actuator in underwater free motion state of numerical simulation. The result show that UUV can realize underwater unpowered suspension under the condition of positive gradient change of seawater density.
