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Review of aircraft noise propagation
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Putnam, T. W. |
| Copyright Year | 1975 |
| Description | The current state of knowledge about the propagation of aircraft noise was reviewed. The literature on the subject is surveyed and methods for predicting the most important and best understood propagation effects are presented. Available empirical data are examined and the data's general validity is assessed. The methods used to determine the loss of acoustic energy due to uniform spherical spreading, absorption in a homogeneous atmosphere, and absorption due to ground cover are presented. A procedure for determining ground induced absorption as a function of elevation angle between source and receiver is recommended. Other factors that affect propagation, such as refraction and scattering due to turbulence, which were found to be less important for predicting the propagation of aircraft noise, are also evaluated. |
| File Size | 2414793 |
| Page Count | 60 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19750024046 |
| Archival Resource Key | ark:/13960/t6q00042q |
| Language | English |
| Publisher Date | 1975-09-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Noise Propagation Turbulence Atmospheric Scattering Aircraft Noise Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
