| With the vigorous development of China's civil aviation industry,more and more airports have become crowded,and the capacity of airports has gradually reached saturation,or even supersaturation.In order to increase airport capacity and reduce delays,many airports use double runways to increase runway capacity.Runway,as the most likely bottleneck subsystem in airports,usually determines the capacity level of the entire airport.Under the condition of ensuring safety,the capacity of double-runway airport can be increased by increasing the number of incoming and outgoing sorties of double-runway airport.One of the factors determining the capacity of a double runway airport is the interval between the front and rear aircraft,and the interval standard is subject to the surveillance capability of air traffic controllers and the wake interval.The wake interval is currently divided by the maximum takeoff weight of the aircraft,so that the interval criteria under different classification combinations can be obtained.However,the wake interval has some limitations.This paper studies how to reduce the wake interval under the condition of ensuring safety.Firstly,this paper introduces a new technology of re-classification of aircraft RECAT,which gives a new standard for wake interval between aircraft and aircraft.Then,combined with wake dissipation model and other factors,an improved standard for wake interval of RECAT is obtained.Secondly,on the basis of improving RECAT wake interval standard,simulation capacity analysis and sensitivity analysis of narrow runway in isolated operation mode are carried out,and simulation analysis and sensitivity analysis of dual runway capacity in independent parallel instrument approach mode and related parallel instrument approach mode are carried out.Based on the analysis of narrow runway and multi-runway,this paper further studies the capacity change of runway before and after optimization by changing the departure order of flights. |
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