USAF Bioenvironmental Noise Data Handbook. Volume 29. MJ-4 Truck, Bomb Service.
AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OHIO
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The MJ-4 Bomb Lift Truck is designed to lift, carr, and attach externally-carried munitions, pylons and fuel tanks onto fighter type aircraft. This report provides measured and extrapolated data defining the bioacoustic environments produced by this unit operating outdoors on a concrete apron at normal ratedloaded conditions. Near-field data are reported for 38 locations in a wide variety of physical and psychoacoustic measures overall and band sound pressure levels, C-weighted and A-weighted sound levels, preferred speech interference level, perceived noise level, and limiting times for total daily exposure of personnel with and without standard Air Force ear protectors. Far-field data measured at 36 locations are normalized to standard meteorologic conditions and extrapolated from 5-800 meters to derive sets of equal-value contours for these same seven acoustic measures as functions of angle and distance from the source. Refer to Volume 1 of this handbook, USAF Bioenvironmental Noise Data Handbook, Vol 1 Organization, Content and Application, AMRL-TR-75-501 1975, for discussion of the objective and design of the handbook, the types of data presented, measurement procedures, instrumentation, data processing, definitions of quantities, symbols, equations, application, limitations, etc. Author
- Civil Engineering
- Surface Transportation and Equipment
- Protective Equipment