Prediction of jet noise in flight from static tests
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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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.
|Title:||Prediction of jet noise in flight from static tests|
|Journal or Publication Title:||Journal of Sound and Vibration|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 341-367|
|Keywords:||Jet noise, flight effects, quadrupole noise, dipole noise, density effects|
|HGF - Research field:||no assignement|
|HGF - Program:||no assignment|
|HGF - Program Themes:||no assignment|
|DLR - Research area:||no assignement|
|DLR - Program:||no assignment|
|DLR - Research theme (Project):||other|
|Institutes and Institutions:||Institute of Propulsion Technology > Engine Acoustic > Turbulence Research|
|Deposited By:||Prof. Dr.-Ing. Ulf Michel|
|Deposited On:||05 Jan 2006|
|Last Modified:||14 Jan 2010 20:08|
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