{
  "$type": "site.standard.document",
  "description": "A gas turbine engine (105) comprising a variable geometry combustor (206, 206', 206\") having fuel injectors (302), a rich-burn zone (1101), a quick-quench zone (1102), and a lean-burn zone (1104), and further comprising quench ports (1103) for admitting quench air to the quick-quench zone; a…",
  "path": "/patents/1401702",
  "publishedAt": "2024-07-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02C9/28",
    "ROLLS ROYCE PLC [GB]"
  ],
  "textContent": "A gas turbine engine (105) comprising a variable geometry combustor (206, 206', 206\") having fuel injectors (302), a rich-burn zone (1101), a quick-quench zone (1102), and a lean-burn zone (1104), and further comprising quench ports (1103) for admitting quench air to the quick-quench zone; a variable geometry airflow arrangement (303) for the variable geometry combustor, which is configured to vary an airflow through the fuel injectors and/or the quench ports; and a control system configured to control the variable geometry airflow arrangement in dependence upon an airflow delivered to the combustor, a fuel flow to the fuel injectors, and a target index of soot emissions to control the quantity of soot produced by combustion.",
  "title": "CONTROLLING SOOT"
}