FIELD: engines and pumps.
SUBSTANCE: proposed method comprises producing recesses intended for reducing efflux noise all around outlet hole for at least one of cold and hot flows of turbo fan engine. Said recesses are blind and cut in one of converging circular surfaces that form outlet hole, without cutting into the other converging circular surfaces. Another invention of the set relates to turbo fan engine implemented in compliance with abode described method.
EFFECT: reduced noise of efflux and aerodynamic drag of noise attenuators.
9 cl, 10 dwg
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