Principles, Practices, and Progress of Noise Reduction in Airplanes Page: 3 of 108
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CO TrE ITmrS
. I t reduction . . . . .
II. tTh Nature of Sound and Hearing
III. Sources of oise in Aircraft . .
A. Pro-oeller Noise . ...
B. Exhaust and Eng-ine Noise
C. Aerodynamic and Ventilating No
D. Secondary Noise Sources .
IV. Soundproofing the Airplane .
A. The Noise-ReNoise duction Factor .
B. Sound Absorotion .
0. Sound Insulation ....
D. Soundproofing Procedures
3iblio ;rahy . . . . ...... . . . . . 24
79
. * 19
. . . . * . 26
S . . . . . 53
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London, Albert. Principles, Practices, and Progress of Noise Reduction in Airplanes, report, January 1940; (https://digital.library.unt.edu/ark:/67531/metadc54557/m1/3/: accessed March 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.