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该文基于独立膨胀原理研究了潜射航行体的自然空泡形态及小机动条件下空泡轴线的偏移,采用细长体理论计算了航行体部分沾湿区的流体动力,建立了纵平面内潜射航行体水下运动数学模型。针对自然空化条件下潜射航行体水下航行段弹道进行了仿真分析,仿真结果表明,艇速干扰使弹道出现弯曲,艇速越大,航行体出水姿态角越大,不利于出水姿态的稳定,而空化作用产生的附加径向力在一定程度上对航行体姿态起到矫正作用,仿真计算结果与模型试验结果符合较好。
In this paper, based on the principle of independent expansion, the natural cavitation of submarine spacecraft and the deviation of the axis of the cavity under small maneuver conditions are studied. The hydrodynamics of the wetted area of sailing body is calculated by using the slender body theory, and the vertical plane Mathematical Model of Submarine Movement of Submarine Launching. The simulation results show that the ballistic trajectory of the submarine navigation submarine is simulating under the natural cavitation condition. The simulation results show that the ballistic curve is distorted by the boat speed jamming. The larger the boat speed is, the larger the attitude angle of the sailing body is, which is unfavorable to the attitude of the water And the additional radial force generated by cavitation can correct the attitude of the sailing body to a certain extent. The simulation results are in good agreement with the model test results.