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
1985-07-01
Report
No indication
English
Propeller-Driven-Small Airplane Noise Certification
NTIS | 1990
|Effect caused by direction of propeller rotation on stability of airplane with two propellers
Engineering Index Backfile | 1946
|Propeller-Driven-Small Airplane Noise Certification
NTIS | 1990
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