Experimental Investigation of Near and Far Acoustic Field of a Small Turbojet

  • J. Haertig
  • C. Johé
Conference paper
Part of the IUTAM Symposia book series (IUTAM)


Experimental results concerning the near and far acoustic field of a small turbojet are presented. At idle speed (subsonic jet) the acoustic field of the engine is similar to the one of a strongly excited free jet model (tone noise with high azimutal coherence). At maximum speed (supersonic sub-critical jet) tone noise is more or less covered by jet noise and the far field is similar to the one of quiet jet model.


Maximum Speed Acoustic Field Idle Speed Tone Noise Wide Band Noise 
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  1. [1]
    J. HAERTIG. Etude du couplage entre champ moyen cohérent et turbulent dans un jet libre rond excité. ISL — R 115/83Google Scholar
  2. [2]
    L. BOBIN, G. KRONENBERGER, A. le Bas. Etude expériment ale des corrélations azimutales du champ acoustique d’un jet libre froid. ISL — CR 79/4Google Scholar
  3. [3]
    C. JOHÉ, J. HAERTIG. Etude expérimentale des champs acoustiques proche et lointain d’un turboréacteur MICROTURBO TRS 18. ISL — R 113/84Google Scholar

Copyright information

© Springer, Berlin Heidelberg 1996

Authors and Affiliations

  • J. Haertig
    • 1
  • C. Johé
    • 1
  1. 1.Institut Franco-Allemand de Recherches de Saint-Louis (ISL)Saint-LouisFrance

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