关键词: 流体力学 , 两栖车辆 , 喷水推进器 , 扬程 , 流量

Abstract: A new method of calculating the primary parameters of the water-jet propulsion system was put forward. Based on the designing speed of amphibious vehicle, input power of water-jet propulsion system, loss coefficients of the intake and the jet nozzle, the elevated height of water, the parameters such as the optimum velocity ratio, the maximum system efficiency, the optimum pump head and flow rate can be calculated.

Key words: fluid mechanics , amphibious vehicle , water-jet propulsion system , head , flow rate