高超声速滑翔飞行峰点高度确定方法

The method to define the altitude of hypersonic gliding peak

针对快速准确获取高超声速滑翔峰点高度的问题,提出了一种在给定初始速度大小的情况下峰点高度计算的迭代算法。考虑将动压和过载约束条件统一到热流率约束条件上,首先在常数速度条件下估算了峰点高度,然后依据峰点高度容许误差迭代计算了峰点高度的修正值,最后通过算例进行了验证。仿真结果表明,该算法计算速度快、精度高,具有同时处理三种约束条件的通用性。

Under the condition that the initial velocity is given,an iterative algorithm is provided to rapidly calculate the exact hypersonic gliding altitude.Considering that the dynamic pressure and the load constraints are unified to the heating rate constraints,we firstly estimate the altitude of the peak at the assumption that velocity is a constant,and then calculate the corrected value of peak altitude according to the altitude tolerance.Eventually,a numerical example is simulated to demonstrate the validation of the proposed algorithm and the result shows that it calculates quickly and exactly,and has the ability to deal with these three constraints simultaneously.