{
  "$type": "site.standard.document",
  "description": "The engine has a noise reducing system for reducing noise generated by ejection of gas stream from a nozzle. The system includes a duct connected in upstream to a recess (24) divided into a central chamber (54) and side chambers (56, 58). The duct opens in downstream at an outlet of the nozzle to…",
  "path": "/patents/999991",
  "publishedAt": "2012-07-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B64D33/06",
    "AIRBUS OPERATIONS SAS [FR]"
  ],
  "textContent": "The engine has a noise reducing system for reducing noise generated by ejection of gas stream from a nozzle. The system includes a duct connected in upstream to a recess (24) divided into a central chamber (54) and side chambers (56, 58). The duct opens in downstream at an outlet of the nozzle to eject fluid jet interacted with the ejected stream. A fluid jet pulsation unit (12) ejects the fluid jet at the outlet and/or modulates speed of the fluid jet by varying volume in the recess using piezoelectric deformable membranes (20, 22). The system balances static pressures between the chambers.",
  "title": "Aircraft jet engine including a system for reducing noise"
}