Study On Wake Safety Separation Of Aircraft At Tianfu Airport Intersecting Runway

With the development of aviation technology and the continuous increase in the demand for civil aviation transportation,the air traffic flow has increased year by year,and the airspace resources have become increasingly tight.The wake vortex has become one of the important factors affecting aircraft flight safety and has restricted the airport’s maximum capacity.At the same time,the domestic experience of the intersecting-runway is relatively small.In order to reduce the wake separation of the intersecting-runway under the condition of ensuring safety,it is necessary to study the force model of the intersecting-runway aircraft encountering wake.Firstly,based on the domestic and foreign research,the simulation of the tail vortex induced velocity model is compared,combined with the foundation of domestic and foreign research,the induced velocity model suitable for the tail vortex encounter is selected,and the APA dissipation model is analyzed to determine the B-H model as induced speed model at follow-up study.Secondly,a corresponding force model is established,and corresponding safety indicators are proposed for the three ways of encountering the wake vortex.The main research content of the traverse wake vortex force model was determined,and the simulation of the traverse wake vortex force model was carried out using MATLAB.The analysis results are basically the same as the conclusions obtained from the analysis of the flight procedures on the wake vortices between East.1 Runway and North.1 Runway of Tianfu Airport,which verifies the accuracy of the force model.Finally,based on the intersecting runway configuration of Tianfu Airport,the aviation wake safety separation was analyzed to determine the maximum force position of the rear aircraft crossing the front vortex,and the bump intensity it was subjected to was calculated.The wake safety separation analysis is performed for the East.1 and North.1 Opening-V runways and the West.1 and North.1 Opening-V runways.It was found that using the intensity of bumps as a safety indicator,the wake separation required by the front and rear aircraft were reduced in different sizes under different circumstances,indicating that the current intersecting-runway wake safety separation may continue to be reduced.And based on the previous research content,a wake separation calculation platform for intersecting-track aircraft is built,which improves the calculation efficiency of cross-track aircraft wake separation.