Working Characteristics Analysis of Waterjet Propulsion for Underwater Vehicles

Waterjet propulsion system for underwater vehicle is presented based on fully discussion of solid fuel turbine and high-speed axial-flow pump.At the design condition,the equilibrium relation of kinematics and dynamics among vehicle,axial pump and engine is researched.At the fixed-depth condition,the velocity of underwater vehicle is changed by altering nozzle number,and the depth and speed character is also analyzed at different nozzle number.The research result indicates waterjet propulsion system can achieve the characteristic goal of high-speed and large-depth,and it provides an important reference to waterjet propulsion underwater vehicle.