飞行性能评估主导参数选择方法

影响高超声速滑翔飞行器飞行性能的参数有很多,若在飞行性能评估中全部予以考虑会使问题复杂到难以解决,选择主导参数是解决该问题的有效途径。在建立高超声速滑翔飞行器动力学模型的基础上,提出利用灵敏度分析选择主导参数的方法。针对一般灵敏度方法在确定主导参数过程中出现的问题,引入了综合灵敏度的概念。最后,以最大射程评估中的主导参数选择为例,通过数值仿真验证了方法的有效性。

Dominant parameters selection method for flight performance evaluation

When evaluating the flight performance of hypersonic glide vehicles,there are usually excessive parameters involved,resulting in an intractable complexity.Using dominant parameters instead is a feasible way.After modeling hypersonic vehicle flight dynamics,a method of selecting dominant parameters utilizing sensitivity analysis is presented.The concept of synthetic sensitivity is introduced to make up the disadvantages in sensitivity analysis.Taking maximum down-range for example,the method is validated through numerical simulation finally.