{
  "$type": "site.standard.document",
  "description": "A propeller control unit (PCU) (21) has a pitch angle actuator (24), a valve (26) operable to selectively fluidly connect the pitch angle actuator (24) with a source (13) of oil for controlling pitch angles of blades (17) of a propeller and with a drain line (32) for draining oil out of the pitch…",
  "path": "/patents/1421229",
  "publishedAt": "2023-05-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B64C11/38",
    "PRATT & WHITNEY CANADA [CA]"
  ],
  "textContent": "A propeller control unit (PCU) (21) has a pitch angle actuator (24), a valve (26) operable to selectively fluidly connect the pitch angle actuator (24) with a source (13) of oil for controlling pitch angles of blades (17) of a propeller and with a drain line (32) for draining oil out of the pitch angle actuator (24) for feathering the blades (17), and a bypass line (40) having an inlet (40a) hydraulically between the valve (26) and an inlet (32a) of the drain line (32), and an outlet (40b) hydraulically between the inlet (32a) of the drain line (32) and an outlet (32b) of the drain line (32).",
  "title": "PROPELLER CONTROL UNIT WITH BYPASS DRAIN LINE"
}