Interior noise measurements for upsweeping and downsweeping movement of the propeller blade tips past the fuselage were made on a twin-engine airplane and on two simplified fuselage models. Changes in interior noise levels of as much as 8 dB reversal of propeller rotation direction were measured for some configurations and test conditions.
Effects of Propeller Rotation Direction on Airplane Interior Noise Levels
1985
34 pages
Report
No indication
English
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