Screech suppression of supersonic jet noise


  • Ramani Ramakrishnan Department of Architectural Science, Ryerson University, Toronto, ON, Canada
  • Sergio Raimondo Aiolos Engineering, Toronto, ON, Canada
  • Anant Grewal Institute for Aerospace Research, NRC, Ottawa, ON, Canada
  • Gary Elfstrom Aiolos Engineering, Toronto, ON, Canada


Aircraft, Jets, Nozzle diameter, Screech tones, Supersonic jets, Test program


A detailed test program was conducted to evaluate noise generating potential of supersonic jet aircrafts. Screech tone removal was subset of the test program. A number of reflectors having proportional sizes to the nozzle diameters were used in the test program to conduct the investigations. One or three rectangular or chevron shaped tabs were applied as the second mechanism for screech tone removal. The Single tab was effective in attenuating the dominant tone by around 10 dB, while the three chevrons were found to remove the screech tones completely.

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How to Cite

Ramakrishnan R, Raimondo S, Grewal A, Elfstrom G. Screech suppression of supersonic jet noise. Canadian Acoustics [Internet]. 2009 Sep. 1 [cited 2024 Jul. 14];37(3):86-7. Available from:



Proceedings of the Acoustics Week in Canada

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