Currently,Compare with widely utilized mode of one arrival and one departure to closely spaced parallel runways,the mode of paired approachs can yield more benefits on capacity of runways.In a sim-ultaneous paired approach to closely-spaced parallel runways,a pair of aircraft flies in close proximity, therefore the separation should be safe and effective.By considering blunder and wake of the leading air-craft,analyzing the process of flying and the change in time and space of paired aircrafts,finally building kinematic model to figure out longitudinal separation.The optimal initial longitudinal separation for a giv-en pair of aircraft is 1 711 m for Shanghai Hongqiao international airport.%相比于目前广泛运用的近距平行跑道一起一降模式,配对进近模式更能发挥跑道的容量潜力。在配对进近模式下,前后机之间的运行间隔是十分小的,因此需要得到兼顾安全与高效的间隔值。考虑前机错误近进和尾流对后机的影响,通过分析前后机在配对进近时的运动过程和时空变化,建立运动学模型,对配对机的纵向间隔问题进行求解。以上海虹桥国际机场为例,得出前后机的最佳起始纵向间隔为1711 m。
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