First Article Noise Survey of the A/F32T-9 Large Turbo Fan Engine Enclosed Noise Suppressor System, Far-Field Noise, Ellsworth AFB, South Dakota.

Abstract

The A/F32T-9 Large Turbo Fan Engine, Enclosed Noise Suppressor System (T-9 NSS) at Ellsworth AFB SD was surveyed to determine noise levels at 100 meters (m). With an F101 engine operating at afterburner power the highest measured Overall Sound Level, A-Weighted (OASLA) was 78.4 dB(A). The measured OASLA values exceeded the 77 dB(A) criterion at only 7 of the 18 sampling positions at a range from 0.3 to 1.4 dB(A).

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1988
Accession Number
ADA191938

Entities

People

  • Ali Y. Ali

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Afterburners
  • Air Force
  • Data Analysis
  • Engine Noise
  • Engines
  • Environmental Health
  • Far Field
  • Insensitive Explosives
  • Measurement
  • Noise
  • Noise Reduction
  • Photoacoustic Tomography
  • Recording Systems
  • Sampling
  • Sound Pressure
  • Stations
  • Three Dimensional

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