{
  "$type": "site.standard.document",
  "description": "A gas turbine engine (10) includes a first spool (16), a second spool (12), a third spool (14), and an epicyclic differential. The epicyclic differential includes a sun gear, planet gears supported from a planet carrier, a ring gear, and a locking member, each housed within an accessory gearbox…",
  "path": "/patents/1395820",
  "publishedAt": "2025-04-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02C3/107",
    "RTX CORP [US]"
  ],
  "textContent": "A gas turbine engine (10) includes a first spool (16), a second spool (12), a third spool (14), and an epicyclic differential. The epicyclic differential includes a sun gear, planet gears supported from a planet carrier, a ring gear, and a locking member, each housed within an accessory gearbox. The planet carrier couples to the second spool (12). The sun gear couples to the third spool (14), and the ring gear couples to engine accessories. A method of operating the gas turbine engine (10) includes supplying a first fuel flow (58) rate to a primary combustor (70) associated with the first (16) and third (14) spools and supplying a second fuel flow (58) rate to a secondary combustor (84) associated with the second spool (12) based on a power lever angle within an intermediate power level range.",
  "title": "TRANSMISSION AND METHOD FOR CONTROL OF BOOST SPOOL"
}