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Michel, Ulf and Michalke, Alfons (1981) Prediction of Flyover Jet Noise Spectra from static Tests. Other. NASA TM 83219. 24 S.
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Abstract
A scaling law is derived for predicting the flyover noise spectra of a single-stream shock-free circular jet from static experiments. The theory is based on the Lighthill approach to jet noise. Density terms are retained to include the effect of jet heating. The influence of flight on the turbulent flow field is considered by an experimentally supported similarity assumption. The resulting scaling laws for the difference between one-third-octave spectra and the overall sound pressure level compare vey well with flyover experiments with a jet engine and wind tunnel experiments with a heated model jet.
| Item URL in elib: | https://elib.dlr.de/20903/ | |||||||||
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| Document Type: | Monograph (Other) | |||||||||
| Title: | Prediction of Flyover Jet Noise Spectra from static Tests | |||||||||
| Authors: |
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| Date: | December 1981 | |||||||||
| Journal or Publication Title: | NASA Technical Memoranda | |||||||||
| Refereed publication: | No | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | No | |||||||||
| Number of Pages: | 24 | |||||||||
| Status: | Published | |||||||||
| Keywords: | jet noise, aeroacoustics, flight noise 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: | Köln-Porz , 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: | 27 Apr 2009 04:50 |
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