| With the rapid development of my country’s aviation market,the problem of tight airspace resources during the approach phase has become more prominent.In order to ensure the safety of civil aviation without accidents,it is necessary to study the collision risk between aircraft during the approach phase.In view of the fact that domestic turbofan feeder aircraft have taken off and landed at large hub airports,in order to support the development of domestic turbofan feeder aircraft and ensure the safe operation of domestic turbofan feeder aircraft,this article takes the domestic turbofan feeder aircraft ARJ21 as an example,Through the established improved EVENT model,the collision risk of ARJ21 under the current wake separation standard adopted by Guangzhou Baiyun Airport and other aircraft in the approach phase is studied.The main research of this paper is as follows:(1)Analyze a series of factors affecting the collision risk between aircrafts,comprehensively considered the safe operation of my country’s civil aviation and the actual operation of turbofan feeder aircraft,and proposed the safety target level of collision risk during the approach phase.(2)Study the wake class and wake separation of my country’s turbofan feeder aircraft.From the perspective of maximum take-off weight(MTOW)classification and RECAT classification,based on ARJ21 model parameters,determine its corresponding wake class and the standard for the wake separation with other aircraft.(3)Improve the EVENT collision model.Analyzed the shortcomings of the traditional EVENT collision model,combined with the collision detection technology to propose an improved EVENT model that is easier to define the position and direction of the aircraft;and use this model to analyze the vertical,lateral and longitudinal collision models and collision risks of the aircraft during the approach and landing phase Conducted analysis and research.(4)Perform simulation verification.Taking ARJ21 as the research model,simulating the scene of ARJ21 in various runway operation modes at Guangzhou Baiyun Airport,using the improved EVENT model to calculate the collision risk at different wake separation,Calculate the collision risk under different wake interval,and verify the feasibility of ARJ21 adopting ICAO,RECAT-EU,RECAT-CN wake interval standards through comparison with the safety target level.(5)Carry out the development of aircraft collision risk calculation platform.The platform is developed on the basis of MATLAB language and improved EVENT collision model.Using GUI technology,it not only realizes the rapid calculation of collision risk between aircraft,but also has the functions of user registration and password modification to realize the security and promotion of the software. |
