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SAE AIR6501 : 2020

Method for Modeling Line-of-Sight Blockage of Aircraft Noise

Standard Details

This document describes methods for calculating the attenuation of sound due to line-of-sight blockage or shielding from non-level terrain. This method applies to sound propagating from an airplane to locations on the ground during ground roll, climbout after liftoff, and landing operations.AIR1845 and AIR5662 provides guidance for modeling aircraft noise at airports with flat terrain. In reality, many airports are surrounded by non-level terrain that may result in attenuation (or shielding) of sound at some receptors. This noise blockage can be accounted for with the line-of-sight blockage calculation, based on the difference in propagation path length between the direct path and propagation path over the top of terrain feature. The purpose of this aircraft information report is to provide a method that accounts for the attenuation due to line-of-sight blockage of aircraft noise by terrain features.

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General Information

Status : Issued
Standard Type: Main
Document No: SAE AIR6501 : 2020
Document Year: 2020
Pages: 15

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SAE AIR6501 : 2020
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