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本文给出了一种弹性飞机动态特性的数值计算和分析方法。文中考虑了飞机受扰后弹性振动与飞机总体运动的耦合作用,并着重研究了前几阶低频结构振型对飞机总体运动的影响。本方法采用了格林定理所导出的速势积分方程方法计算定常和完全非定常空气动力。采用特征根迭代法求解弹性运动方程,只需经较少次数的迭代即可收敛。文中附有算例,其计算结果是合理的。
In this paper, a numerical calculation and analysis method for the dynamic characteristics of an elastic aircraft is given. In this paper, the coupling between the elastic vibration of the aircraft and the overall movement of the aircraft is considered, and the effect of the first few low-frequency structural modes on the overall movement of the aircraft is also studied. The method uses the potential integral equation method derived from the Green’s theorem to calculate the steady and completely unsteady aerodynamics. Using the eigenvalue iterative method to solve the elastic equation of motion, convergence can be achieved with fewer iterations. Attached to the article in the article, the calculation result is reasonable.