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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。
There are many parameters that affect the flight performance of hypersonic gliding aircraft. If all the parameters in the flight performance evaluation will make the problem complicated and difficult to solve, choosing the dominant parameter is an effective way to solve the problem. Based on the establishment of the dynamic model of the hypersonic gliding aircraft, a method of selecting the dominant parameter using sensitivity analysis is proposed. Aiming at the problems that arise in the process of determining the dominant parameters of the general sensitivity method, the concept of comprehensive sensitivity is introduced. Finally, taking the choice of the dominant parameter in the maximum range evaluation as an example, the validity of the method is verified by numerical simulation.