Extended reaction acoustic liner for jet engines and the like

摘要: An extended reaction acoustic liner for use in jet engine noise mitigation has a substantially non-porous outer layer, honeycomb core disposed laminar juxtaposition to the and porous inner layer such that is sandwiched between layer. The comprises plurality of cell walls defining cells. Some cells are fluid communication with one another via openings formed walls. cause viscous losses, resulting energy dissipation enhanced attenuation.