SAE ARP5534

Podrobné informace

Označení: SAE ARP5534

Datum vydání: 01.01.2021

Stran: 0

Země: Americká technická norma

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Anotace

This document presents a practical method for calculating atmospheric absorption for wide-band sounds analyzed with one-third octave-band filters, called the SAE Method. The SAE Method utilizes pure-tone attenuation algorithms originally published in ISO 9613-1 and ANSI S1.26-1995 to calculate path-length attenuation at mid-band frequencies. The equations introduced in this standard transform the pure-tone, mid-band attenuation to one-third octave-band attenuation.

The purpose of this guidance document is to extend the useful attenuation range of the Approximate Method outlined in ANSI S1.26-1995, and to replace ARP866A. Calculation of sound attenuation caused by mechanisms other than atmospheric absorption such as divergence, refraction, scattering due to turbulence, ground reflections, or non-linear propagation effects, is outside the scope of this document.

SUBJECT TAXONOMY: Simulation and modeling, Computational fluid dynamics, Computer simulation, Mathematical models, Environment, Emissions, Air pollution, Exhaust emissions, Emissions control, Emissions measurement, Environmental regulations and standards, Environmental testing, Noise, Exterior noise, Vibration, Hybrid engines, Jet engines, Tests and Testing, Turbulence
SUBFILE: Aerospace
TYPE OF DOCUMENT: Aerospace Standard