Airport and Airspace Delay Model Description

The Airport and Airspace Delay Model (AADM) is a computerized event-step simulation developed to replicate the movement of aircraft through enroute and terminal airspace and runway complexes. The model, which is written in the high-level SIMSCRIPT II.5 programming language, produces output statistics describing aircraft delay and travel time and a log of all simulation events. AADM is designed to model various air traffic conditions including multiple airports, variable route structures and runway use configurations, variable separation rules and control procedures, multiple control sectors, sector capacities, wind conditions, aircraft performance characteristics, variable traffic loadings, and the like. The AADM program logic includes airspace traffic control and airport/airspace interface components. The airspace logic simulates three levels of the operational control process: Level I--tactical control; Level II--sequencing control; and Level III--strategic control. The airport/airspace interface logic simulates final approach, takeoff and landing interleaving and departure control procedures. The multiple airport complex and airspace serving the San Francisco area are used to demonstrate the AADM application.