{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "A power extraction system (101) is provided and includes a low-pressure spool (116) of a gas turbine engine, the low-pressure spool being rotatable at an input rotational speed between a first minimum speed and a first maximum speed, downstream components (120) rotatable at an output rotational…",
  "path": "/patents/1427937",
  "publishedAt": "2024-01-24T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01D15/10",
    "HAMILTON SUNDSTRAND CORP [US]"
  ],
  "textContent": "A power extraction system (101) is provided and includes a low-pressure spool (116) of a gas turbine engine, the low-pressure spool being rotatable at an input rotational speed between a first minimum speed and a first maximum speed, downstream components (120) rotatable at an output rotational speed between a second minimum speed and a second maximum speed and a transmission assembly (130) by which rotations of the low-pressure spool at the input rotational speed are transmittable at the output rotational speed to the downstream components. The transmission assembly includes clutches (133) and a controller (135) configured to control openings and closings of the clutches according to an upshifting algorithm whereby a torque applied by the downstream components is used to reduce the output rotational speed to an output speed of a gear into which the transmission assembly is shifting.",
  "title": "TRANSMISSION SHIFT CONTROL METHOD FOR REDUCED TORQUE TRANSIENTS"
}