水下应用栅格翼动态展开参数预示方法

摘要

Based on the kinetic model of underwater grid fins during the procedure of dynamic expansion,a prediction method was developed,which took the motion parameters at typical expansion points as the design input.The hydrodynamic moment used in the kinetic model was fitted by the values obtained in steady hydrodynamic conditions with specific expansion angles.A modified factor in consideration of the relative velocity was included as well.By comparing with the results obtained by unsteady numerical simulations and the underwater vehicle experiment data,the prediction method is verified,which can provide a design reference for the optimum proposal of the underwater grid fins and the analysis of non-synchronization expansion.%基于水下应用栅格翼动态展开过程动力学模型,根据展开特征角度定常水动力方法,拟合获得展开全程受到的流体力矩,并引入考虑相对速度影响的修正因子,形成水下应用栅格翼动态展开过程参数工程预示方法,以典型展开时序点航行体运动参数为设计输入,对栅格翼展开过程运动参数进行预示.通过与水下应用栅格翼非定常流场仿真计算数据以及水下航行体弹射试验数据对比,验证了上述预示方法的正确性及工程适用性,为水下应用栅格翼方案设计的优化及展开不同步性分析提供设计参考.