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:||other|
|HGF - Program:||other|
|HGF - Program Themes:||other|
|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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