Effects of SST Takeoff Procedures on Noise Exposure, and Review of EPNL Variations with Distance.
BOLT BERANEK AND NEWMAN INC CAMBRIDGE MASS
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The report summarizes the results of a study of noise exposure from supersonic transport SST operations and the estimation of changes in SST noise levels with distance, from currently available data. The report is presented in two parts. Part I describes a study of the effects of SST takeoff operational procedures on aircraft noise exposure for a simplified airport situation. Factors considered include aircraft mix, takeoff climb profiles and aircraft noise levels. Part II discusses methods of estimating variations of effective perceived noise level EPNL with slant distance for SST aircraft. Emphasis is placed on estimating these noise levels at large distances between the aircraft and the observer. Author