Research On Key Techniques Of Closely Spaced Parallel Runways In The Dependent Parallel Approach Mode

As the increasing of air traffic flow, the capacity of some busy airports has almost saturated.Single runway can not meet the growing traffic demand. Though the parallel runways show asubstantial increase in capacity, it has to occupy large area and needs high investment. By contrast,closely spaced parallel runways have a great advantage. Closely spaced parallel runways have beenstudied at home and abroad. Foreign scholars mainly focused on the operational feasibility of closelyspaced parallel runways, have not related to the runway configuration, runway capacity, landingprogram. Compared with the situation abroad, in recent years, only a small part of scholars indomestic introduced the concept of closely parallel runways which in the field of key technology havenot been deep studied.In this paper, the relevant parallel approach operation based on closely spaced parallel runwayshas mainly been studied. Firstly, by analyzing the impact of the wake vortex, the runway intervalparameters of closely spaced parallel runways have been determined. Secondly, the capacitycalculation model has been built, and the relevant parallel approach and the isolate parallel approachhave been compared. Then, a mathematical model has also been established, through analyzing thevarious unfavorable factors such as an impact area could be got. Finally, the landing program of theclosely spaced parallel runways has been studied and multiple constraints have been analyzed in orderof delaying costs. Then, the results compared with the delay cost of the isolate parallel procedure,highlighting the economics of the parallel approach operation.