USAF Bioenvironmental Noise Data Handbook. Volume 131. F-4 Aircraft In the AF32A-14 Noise Suppressor, Near and Far-Field Noise.

Abstract

The AF32A-14 noise suppressor is made by Koppers Environmental Elements Corporation for acoustical suppression of the F-4 aircraft. This report provides measured and extrapolated data defining the bioacoustic environments produced by this aircraft operating in this suppressor for three engine power configurations. Near-field data are reported for two locations in a wide variety of physical and psychoacoustic measures: overall and band sound pressure levels, C-weighted and A-weighted sound levels, preferred speech interference level, perceived noise level, and limiting times for total daily exposure of personnel with and without standard Air Force ear protectors. Far-field data measured at 19 locations are normalized to standard meteorological conditions and extrapolated from 75-8000 meters to derive sets of equal-value contours for these same seven acoustic measures as functions of angle and distance from the source.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1979
Accession Number
ADA079869

Entities

People

  • Robert A. Lee

Tags

Communities of Interest

  • Air Platforms
  • Biomedical
  • Human Systems
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Biomedical Research
  • Data Processing
  • Engine Noise
  • Environment
  • Far Field
  • Handbooks
  • Instrumentation
  • Measurement
  • Meteorology
  • Near Field
  • Noise
  • Security
  • Sound Pressure
  • Standards
  • Suppressors

Fields of Study

  • Physics

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