JET NOISE REDUCER Russian patent published in 2017 - IPC F01N1/04 

FIELD: engines and pumps.

SUBSTANCE: muffler comprises a cylindrical body rigidly connected with the end inlet and outlet port, and partitions. The body motion perpendicular to the direction of aerodynamic flow, are installed at least two discs with holes forming chambers, and alternately drives the holes offset relative to the housing axis so that the openings do not coincide in the two adjacent discs. The housing is made of structural materials coated on its surface with one or both sides of the vibration-damping layer of soft material, such as WD-17 mastic material or type "Gerlen-D", and the cells mounted sound-absorbing ring members and absorbing elements are circular.

EFFECT: increased efficiency due to attenuation of the muffler chamber settings by turning the sound-absorbing element.

3 dwg