AH-28 TROLLEY

CHANCE COACH, INC. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Standstill

Date : 1993-03-31
Personnel : B.L., B.R. and R.H.
Temperature (°F) : 55 Humidity (%) : 50
Wind Speed (mph) : 4 Wind Direction : ne
Barometric Pressure (in.Hg) : 29.86
Verify that microphone height is 4 feet, wind speed is less than 12 mpg and ambient temperature is between 30 F and 90 F: true checked by RL
Initial Sound Level Meter Calibration: true checked by RL
Exterior Ambient Noise Level dB(A): 44.4

Accelerating from Constant Speed
Curb (Right) Side
Accelerating from Constant Speed
Street (Left) Side
Run # Measured Noise Level dB(A) Run # Measured Noise Level dB(A)
1 78.3 1 80.2
2 78.7 2 80.8
3 78.3 3 80.6
4 78.2 4 80.8
5 78.3 5 81.0
Average of two highest actual noise levels = 78.5 dB(A) Average of two highest actual noise levels = 80.9 dB(A)