Noise measurements on standard airplanes and on similar airplanes equipped with engine mufflers, propeller reduction gears, and propellers with various numbers of blades and blade shapes.
Experiments in external noise reduction of light airplanes
Nat Advisory Committee Aeronautics -- Tech Note
1950
121 pages
Illustrations, Diagrams, Charts, Tables
Report
English
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Noise reduction in cabin airplanes
Engineering Index Backfile | 1934
|Problem of noise reduction with reference to light airplanes
Engineering Index Backfile | 1946
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