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- Publisher
- Emerald Publishing
- Copyright
- Copyright © Emerald Group Publishing Limited
- ISSN
- 0002-2667
- DOI
- 10.1108/eb030480
- Publisher site
- See Article on Publisher Site
Abstract
AIRSCREW noise, engine noise and aerodynamic noise combine to produce the high noise level of an aeroplane. Much information has been obtained experimentally concerning these noises and the loudness level they produce when occurring together. The possibility of applying this information, to predict the noise level of projected aircraft, recently promoted a further review of the data, and some new expressions were framed, which, together with other older and welltried formul, linked together tolerably well the results of the several experiments. These empirical laws, which have proved of considerable value in several problems relating to the improvement of aeroplane noise, are now put forward. At the same time the basic experiments are outlined so that those who may use the expressions will be aware of possible limitations.
Journal
Aircraft Engineering and Aerospace Technology – Emerald Publishing
Published: May 1, 1939