Faculty of air transport engineering the department of «air navigation systems»

2.6 The structure of the model of ground movement of aircraft in the area of air traffic control and the model of the airport - using AnyLogic


Taxi network model
The taxiway network model is one of the most important components of the airport simulation model, which ensures the correct reproduction of almost all other aspects of aircraft taxiing. Therefore, we will begin the consideration of individual subsystems precisely with this component.
The transport (taxiing) network is an integral part of the airport infrastructure, providing the opportunity for aircraft to take off and land operations, as well as their passage from the parking place to the start point and from the end point of the run after landing to the parking place. The airport taxi network model includes the following types of elements:
• taxiways (regular and main)
• intersections
• runways
• parking places (platforms)
• preliminary start
• executive start
• fictitious elements representing entities that in reality are not related to the taxi network, but are used in the modeling process; fictitious locations, for example, include airport complexes (terminals) of the airport, the air zone of the airport (“pre-landing” and “take-off” locations), etc.
From the configuration of the route network, traffic parameters in individual sections, traffic control methods and other parameters that determine and characterize the operation of the taxiway network, the efficiency of the airport operation largely depends. Therefore, it is necessary to provide a fairly detailed simulation of this infrastructure.
The taxiway network model serves to solve two main tasks: simulating the movement of aircraft along the airfield of the airport and visualizing this movement, as well as the taxiway network itself (when editing).
Simulation of aircraft movement is designed to provide numerical characteristics of the airport. The model should provide a fairly accurate calculation of the total time spent by aircraft on the airfield, for which it is necessary to simulate the movement of the aircraft in individual sections of the taxiway network, as well as takeoff and landing operations. At the same time, many factors must be taken into account: speed, route length, taxi network configuration, traffic rules for individual sections, interaction between aircraft, dispatch control, etc.
Aircraft model
Aircraft model objects contain and
provide other objects of the model with the following information about themselves.
Aircraft identifier - an internal name that allows you to identify an aircraft in the simulation model, as well as in other modules of the software package (flight schedule editor, visualization subsystem).
Type of aircraft: (3 - heavy aircraft, 2 - medium aircraft, 1 - light aircraft). Depending on the type of aircraft, some of its characteristics (such as the path length during landing, taxiing speed in various sections, etc.), as well as taxiing parameters (for example, the intervals between aircraft during landing, take-off, taxiing).
The type of flight (arrival or departure) is assigned at the time of creation of the object representing the aircraft, in accordance with the information indicated in the schedule.
The route of movement is presented as an ordered set of locations. The route is assigned at the time of creation of the facility representing the aircraft.
Current location - the location on which the aircraft is currently located.
The distance traveled by the aircraft at the current location at a given point in time.
The current} speed of movement in a location.