First Article Noise Survey of the A/F32T-9 Large Turbo Fan Engine Enclosed Noise Suppressor System, Far-Field Noise, Ellsworth AFB, South Dakota.
Final rept. for period ending 13 Oct 87,
AIR FORCE OCCUPATIONAL AND ENVIRONMENTAL HEALTH LAB BROOKS AFB TX
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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.
- Jet and Gas Turbine Engines
- Noise Pollution and Control