Screech suppression of supersonic jet noise
Keywords:Aircraft, Jets, Nozzle diameter, Screech tones, Supersonic jets, Test program
AbstractA 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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