汲水斗对水面飞行器水动力性能的影响

The influence of bailers on the hydrodynamic performance of the seaplane

    摘要
  • 摘要:
      目的  基于数值和试验方法研究汲水斗不同状态下水面飞行器的水动力性能变化规律。
      方法  首先，通过试验方法研究水面飞行器放下汲水斗时在不同速度及不同排水量下的水动力性能；然后，采用CFD数值方法求解不同速度下，无、收起和放下汲水斗3种情况下水面飞行器的黏性绕流场。
      结果  结果显示，随着速度的增大，在相同汲水量下，水面飞行器的总阻力、升沉幅度均随之增大，纵倾角减小；随着汲水量的增大，其总阻力、纵倾角和升沉幅度增大；汲水斗放下时水面飞行器的总阻力明显增大，升沉增大，但纵倾角减小；汲水斗收起时对水面飞行器的水动力性能影响不大。
      结论  所得研究结果对水面飞行器汲水斗的优化设计具有重要指导意义。

     

    Abstract:
      Objectives  The hydrodynamic performance under different bailer conditions based on numerical and experimental methods was investigated.
      Methods  The hydrodynamic performance of the seaplane with different displacements under different speeds was studied using an experimental method, and the viscous flow field of the seaplane under three conditions（without bailer, bailer closed, bailer lowered) at different speeds was computed.
      Results  The results show that at the same displacement the total resistance and heave amplitude of the seaplane increase, the trim angle decreases, when the speed increases; with displacement increases, the total resistance, trim angle and heave amplitude of the seaplane increase; while the bailer lowers, the total resistance and heave amplitude of the seaplane increase, the trim angle decreases; the effect on the hydrodynamic performance is not obvious as the bailer closes.
      Conclusions  The results of this paper are of great significance to the optimal design of water pumping systems of the seaplane.

     

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