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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。
Aiming at the problem of obtaining the height of hypersonic glide peak quickly and accurately, an iterative algorithm for calculating the height of the peak at a given initial velocity is proposed. Considering that the dynamic pressure and overload constraints are unified to the heat flow rate constraints, the peak height is first estimated under the condition of constant velocity, and then the correction value of the peak height is calculated iteratively according to the peak height tolerance. Finally, an example is given Verified. Simulation results show that the proposed algorithm has the advantages of fast calculation speed and high precision, and has the commonality of dealing with the three kinds of constraints at the same time.