基于网格面元法的高超声速飞行器性能分析

Performance Analysis of Hypersonic Vehicle Base on Surface Element Modeling

在高超声速飞行器预先研究和概念设计阶段,目前缺乏足够的飞行试验数据和地面实验数据,根据实际飞行性能指标进行气动布局和总体性能优化设计是困难的。基于网格面元法的工程估算方法,是一种计算性能指标的方法,采用参数化建模建立其几何模型,基于几何模型分解法建立网格面元模型,采用工程估算方法计算气动力和雷达散射截面两个有代表性的性能指标。通过对仿真结果的分析表明,基于网格面元法的性能指标计算方法有效且速度快,满足了气动布局和总体性能优化设计中对性能指标计算速度和计算精度的双重需求。

As lack enough flight tests and ground experiment data, shape optimizing design bases on performance index of real flight became very difficult in the conception design stage of hypersonic vave-rider vehicle. Based on surface element modeling, engineering calculation is a feasible method. First parameter modeling method is used to build a geometry model, then the surface element modeling is constructed through components decompose. In the end, aerodynamic force and radar cross section are calculated using engine method. The results show that the computing time is short and the calculation accuracy is high, which can satisfy the demands for calculating time and precision in shape optimize design.