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舵面偏转除了能够提供保证飞机稳定飞行的配平力矩,还将改变飞机的升阻比,从而影响其续航性能。在基于飞机质点假设的传统航迹优化方法的基础上,研究了飞机的升阻特性对其续航性能的影响:在上升段、巡航段及下降段前期增大升阻比,在下降段后期减小升阻比,有利于提高飞机的续航性能;提出了基于舵面配平的续航飞行航迹优化方法,以获得更接近于发挥飞机实际潜力的最优航迹与最大航程。对于多操纵面布局飞机,通过该方法能够确定其最优舵面组合配平规律。算例飞机的优化结果表明:相比单一舵面配平,最优舵面组合配平能够使算例飞机的总航程最大提高7.5%。
Rudder deflection in addition to providing a stable balance of the aircraft to ensure the balance of torque, but also change the lift-drag ratio, thus affecting its life performance. Based on the traditional track optimization method based on aircraft mass assumptions, this paper studies the influence of the lift resistance of aircraft on its cruising performance. In the ascending section, the cruise section and the descending section increase the resistance ratio in the early stage and decrease in the descending section in the late stage The resistance ratio of small lift can help to improve the life performance of the aircraft. The optimization of the flight path based on the trim of the control surface is proposed to obtain the optimal flight path and the maximum distance closer to the actual potential of the aircraft. For multi-control surface layout aircraft, the optimal rudder surface combination rule can be determined by this method. The results of the example aircraft optimization show that the optimal rudder combined trim can maximize the total flight of the example aircraft by 7.5% compared to a single rudder trim.