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Fundamental and applied research on core engine/combustion noise of aircraft engines
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Summerfield, M. Plett, E. G. Leshner, M. D. |
| Copyright Year | 1974 |
| Description | Some results of a study of the importance of geometrical features of the combustor to combustion roughness and resulting noise are presented. Comparison is made among a perforated can flame holder, a plane slotted flame holder and a plane slotted flame holder which introduces two counter swirling streams. The latter is found to permit the most stable, quiet combustion. Crosscorrelations between the time derivative of chamber pressure fluctuations and far field noise are found to be stronger than between the far field noise and the direct chamber pressure signal. Temperature fluctuations in the combustor nozzle are also found to have a reasonably strong crosscorrelation with far field sound. |
| File Size | 2213682 |
| Page Count | 33 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19750003902 |
| Archival Resource Key | ark:/13960/t6qz70x0c |
| Language | English |
| Publisher Date | 1974-07-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Noise Propagation Acoustic Measurement Acoustic Properties Engine Noise Far Fields Aircraft Engines Combustion Chambers Noise Spectra Jet Engines 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 |
