Accession Number:

ADA191938

Title:

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

Descriptive Note:

Final rept. for period ending 13 Oct 87,

Corporate Author:

AIR FORCE OCCUPATIONAL AND ENVIRONMENTAL HEALTH LAB BROOKS AFB TX

Personal Author(s):

Report Date:

1988-02-01

Pagination or Media Count:

274.0

Abstract:

The AF32T-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 dBA. The measured OASLA values exceeded the 77 dBA criterion at only 7 of the 18 sampling positions at a range from 0.3 to 1.4 dBA.

Subject Categories:

  • Jet and Gas Turbine Engines
  • Noise Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE