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Michalke, Alfons and Michel, Ulf (1979) Prediction of jet noise in flight from static tests. Journal of Sound and Vibration, 67 (3), pp. 341-367. Elsevier.
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Abstract
The sound intensity of jet noise in flight is derived in a co-ordinate system fixed to the jet engine. For this reason a convected form of the Lighthill equation is solved, with special care taken of jet temperature effects. Under certain assumptions and approximations, the in-flight and static sound intensities are related in a simple manner. Thus the directivity of jet noise in flight can be predicted. The theoretical result is checked with measurements. The agreement is remarkably good.
| Item URL in elib: | https://elib.dlr.de/19290/ | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Document Type: | Article | |||||||||
| Title: | Prediction of jet noise in flight from static tests | |||||||||
| Authors: |
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| Date: | 1979 | |||||||||
| Journal or Publication Title: | Journal of Sound and Vibration | |||||||||
| Refereed publication: | Yes | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | Yes | |||||||||
| Volume: | 67 | |||||||||
| Page Range: | pp. 341-367 | |||||||||
| Publisher: | Elsevier | |||||||||
| Status: | Published | |||||||||
| Keywords: | Jet noise, flight effects, quadrupole noise, dipole noise, density effects | |||||||||
| HGF - Research field: | other | |||||||||
| HGF - Program: | other | |||||||||
| HGF - Program Themes: | other | |||||||||
| DLR - Research area: | no assignment | |||||||||
| DLR - Program: | no assignment | |||||||||
| DLR - Research theme (Project): | no assignment | |||||||||
| Location: | other | |||||||||
| Institutes and Institutions: | Institute of Propulsion Technology > Engine Acoustic > Turbulence Research | |||||||||
| Deposited By: | Michel, Prof. Dr.-Ing. Ulf | |||||||||
| Deposited On: | 05 Jan 2006 | |||||||||
| Last Modified: | 14 Jan 2010 20:08 |
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