Measurements of the noise generated by an SD40-2 diesel electric locomotive are described. The noise was measured in three types of moving tests: the first with the locomotive passing a 6-microphone array while under maximum power acceleration, the second with the locomotive simulating the pulling of a train, and the third with the locomotive coasting by unpowered. Stationary noise measurements were made at 16-microphone positions around the locomotive while it was attached to a load cell. The moving tests show that at the lower throttle settings, wheel/rail noise may be an important contributor to the overall locomotive noise signature even at modest speeds. Diagnostic tests to determine how much the various sources contributed to the overall noise were also performed.
An Assessment of Railroad Locomotive Noise
1976
170 pages
Report
No indication
English
An assessment of railroad locomotive noise
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