{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "An engine system (100) of an aircraft includes an energy storage system (218), a gas turbine engine (20), and a controller. The gas turbine engine (20) includes a low spool (30), a high spool (32), a low-spool generator (12B) operably coupled to the low spool (30), and a high-spool electric motor…",
  "path": "/patents/1404690",
  "publishedAt": "2025-04-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B64D27/16",
    "RTX CORP [US]"
  ],
  "textContent": "An engine system (100) of an aircraft includes an energy storage system (218), a gas turbine engine (20), and a controller. The gas turbine engine (20) includes a low spool (30), a high spool (32), a low-spool generator (12B) operably coupled to the low spool (30), and a high-spool electric motor (13A) operably coupled to the high spool (32). The controller is configured to detect a braking condition of the aircraft, transfer power from the low-spool generator (12B) to the energy storage system (218) based on the storage capacity state of the energy storage system (218), and transfer power to the high spool (32) through the high-spool electric motor (13A) to support combustion in the gas turbine engine (20) while a rotational speed of the low spool (30) is reduced responsive to the low-spool generator (12B) extracting energy from the low spool (30).",
  "title": "HYBRID ELECTRIC IDLE AND BRAKING FOR AN AIRCRAFT"
}