EVALUATION OF THE AMBIENT NOISE DIFFERENTIAL OF THE S2E AND T-39 SERIES AIRCRAFT
NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA AEROSPACE MEDICAL RESEARCH DEPT
Pagination or Media Count:
Pertinent data on the noise and vibration environments in the S2E and T-39 aircraft, supplied by the Advanced System Development and Structural Dynamics groups of North American Aviation, Inc., are presented and examined regarding the effects of the noise and vibration environments of these two aircraft on crew performance. The nature and scope of the effects of the acoustic noise and vibration environments on human performance are discussed. Both auditory and non-auditory effects are included, and particular emphasis is placed on the speech-interfering characteristics of the noise environment, and also its ability to cause permanent hearing loss. It was found that under some operating conditions the noise levels in the S2E were above specification limits, and that even with a protective helmet the noise levels in the S2E were sufficiently high to cause some permanent hearing loss.
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