Airport and Airspace Simulation Model - SIMMOD

Federal Aviation Administration

SIMMOD simulates all airport and airspace traffic operations in a continuous network of taxiways, runways, and flight paths. This program, together with descriptive information about the air-ground system, enables analysts to "play out" operations within a computer and to calculate the real world results of many alternatives. It aids in the study of en route air traffic, terminal area air traffic, and airport and airline ground operations. SIMMOD thus answers, "What would happen if...?" questions about proposed designs, procedures, and policies in aviation.

SIMMOD simultaneously maneuvers all individual aircraft as they travel through the complex connected system of gates-taxiways-runways-airspace. It detects and realistically resolves potential violations of separation rules and operating procedures throughout the system. The model accurately computes and records aircraft travel time, aircraft delay, and fuel consumption statistics.

SIMMOD offers several options for displaying results. Users can replay computed simulation results in animated graphic displays. These show aircraft moving over maps of the airport or airspace under study. SIMMOD also produces printed reports and graphs for easy comparison of alternative designs and procedures.

Once a standard scenario has been established, users may change the input data to develop and evaluate new alternatives. The extent of the differences between scenarios will determine how much data must be changed. Because SIMMOD is data-driven, no reprogramming is required. A data development pre-processor assists the user in collecting, preparing, and editing data input files.