Department of Defense Aircraft Noise Models

The Department of Defense (DOD) supports the continuing development of the science of noise impact analysis and the application and implementation of scientific principles in environmental impact analysis. This development has led to improvements in aircraft noise models both in terms of accuracy and complexity. This presentation provides an overview of the aircraft noise models used in DOD environmental noise analyses. The overview includes descriptions of the various models and their intended application along with their evolution. The descriptions include the computational approach, reference noise data, input requirements, and output options. The noise metrics generated by each model are described in terms of primary and supplemental metrics. The primary metrics are the main metrics generated by the model and generally are used to describe the basic noise generated by the training activity. The supplemental metrics are used to describe various aspects of the noise environment, and they may need further analysis to calculate from an individual model.