Accession Number:

AD0744828

Title:

Noise and Speech Levels Associated with the F-111A Prep Area, McClellan AFB

Descriptive Note:

Final rept. May-Nov 1970

Corporate Author:

AIR FORCE AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OH

Report Date:

1972-05-01

Pagination or Media Count:

38.0

Abstract:

The purpose of the study was to measure the ambient noise environment and speech reception levels associated with the F-111A flight prep area at McClellan AFB, California to measure noise attenuation characteristics of several ear protection devices contemplated for use in the ambient noise and to determine maximum permissible human exposure durations based on these data. The results show that a H-133 standard AF communication headset, microphone in combination with a custom molded insert communication earplug would permit personnel to be exposed up to 8 hours continuously at the 70 and 85 engine power settings. These time limits decrease to 36 minutes per 8 hour day during afterburner zone 5. Even in the highest noise levels, communication capability was satisfactory with this earplugheadset combination.

Subject Categories:

  • Stress Physiology
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE