{
  "$type": "site.standard.document",
  "description": "An electrical machine (30) comprising a moveable permanent magnet component (32) configured to generate a first magnetic field. A stator (44) comprising windings configured to excite a second magnetic field. A moveable inter-pole component (52) located between the permanent magnet component and the…",
  "path": "/patents/1421627",
  "publishedAt": "2026-01-07T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01D15/10",
    "ROLLS ROYCE PLC [GB]"
  ],
  "textContent": "An electrical machine (30) comprising a moveable permanent magnet component (32) configured to generate a first magnetic field. A stator (44) comprising windings configured to excite a second magnetic field. A moveable inter-pole component (52) located between the permanent magnet component and the stator, the inter-pole component comprising an array of magnetic inter-pole pieces (54). The speed of movement of the inter-pole component is controlled to set a magnetic gear ratio between the first and second magnetic fields. Also a gas turbine engine, propulsor or thruster incorporating the electrical machine.",
  "title": "GAS TURBINE ENGINE INCORPORATING A VARIABLE GEAR RATIO ELECTRICAL MACHINE"
}