{
  "$type": "site.standard.document",
  "description": "An oil supply system (130) for an aircraft engine (10) includes: an oil tank (32); a closed-loop oil circuit (52) including a component (22, 36), a pump (48) having a pump inlet (48A) and outlet (48B), and a de-aerator (54); a make-up flow conduit (60, 60', 60\") connecting the oil tank (32) to the…",
  "path": "/patents/965182",
  "publishedAt": "2026-05-27T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01D25/20",
    "PRATT & WHITNEY CANADA [CA]"
  ],
  "textContent": "An oil supply system (130) for an aircraft engine (10) includes: an oil tank (32); a closed-loop oil circuit (52) including a component (22, 36), a pump (48) having a pump inlet (48A) and outlet (48B), and a de-aerator (54); a make-up flow conduit (60, 60', 60\") connecting the oil tank (32) to the closed-loop oil circuit (52); a make-up pump (62, 62', 62\") connected to the closed-loop oil circuit (52); a recirculation conduit (63) in parallel to the make-up pump (62, 62', 62\") and bypassing the make-up pump (62, 62', 62\"); a fixed orifice (65) fluidly connected to the make-up flow conduit (60, 60', 60\") upstream of the closed-loop oil circuit (52) and downstream of the recirculation conduit (63), the fixed orifice (65) having an area selected to increase a pressure at an outlet (62B) of the make-up pump (62, 62', 62\") above a pressure at the de-aerator inlet (54A); and a metering orifice (64) connected on the recirculation conduit (63) and having a flow circulating area selected to reduce a flow rate inputted into the closed-loop oil circuit (52) below a flow rate generated by the make-up pump (62, 62', 62\").",
  "title": "OIL DISTRIBUTION SYSTEM FOR AIRCRAFT ENGINE WITH MAKE-UP FLOW"
}