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研究微小型飞行器在大气飞行时受到连续阵风干扰后气动升力的预测问题,考虑von Karman谱参数的不确定性,将其用区间向量定量化,基于区间扩张理论和Taylor级数展开,并结合非定常气动力理论,提出了一种考虑飞行环境不确定性的非定常气动载荷计算的区间分析方法.该方法只需要知道不确定参数所在范围的界限,而不需要其他概率信息,为解决不确定气动载荷计算这种复杂问题提供了一个途径.通过数值算例,将区间分析方法与概率方法的结果进行了比较,显示了区间分析方法是可行并有效的.
Based on the uncertainties of the von Karman spectral parameters, this paper studies the prediction of the aerodynamic lift after the micro-aircraft encounters continuous gust disturbance in atmospheric flight. It is quantified by the interval vector, based on the interval expansion theory and Taylor series expansion, This paper presents an interval analysis method of unsteady aerodynamic loads considering the uncertainties of the flight environment, which only needs to know the limits of the range of uncertain parameters and does not need other probability information. In order to solve the uncertainties Aerodynamic loads provide a way to calculate this complex problem.Compared with the results of the probabilistic method through numerical examples, it shows that the method of interval analysis is feasible and effective.