{
  "$type": "site.standard.document",
  "description": "The liner system (50) includes a mode-scattering segment (48) providing a reactance between -12 and -2 rho c and a sound absorbing segment (40) providing a reactance between -1 and -0 rho c, to provide a reactance discontinuity, such that mode-scattering of the sound field enables the sound…",
  "path": "/patents/1087824",
  "publishedAt": "2004-04-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B64D33/02",
    "ROLLS ROYCE PLC [GB]"
  ],
  "textContent": "The liner system (50) includes a mode-scattering segment (48) providing a reactance between -12 and -2 rho c and a sound absorbing segment (40) providing a reactance between -1 and -0 rho c, to provide a reactance discontinuity, such that mode-scattering of the sound field enables the sound absorbing segment to further absorb the scattered sound. An independent claim is also included for ducted fan gas turbine engine.",
  "title": "Acoustic liner for gas turbine engine"
}