{
  "$type": "site.standard.document",
  "description": "A fan blade (20) comprises a main body extending between a leading edge (21) and a trailing edge (22). Channels (30) are formed into the main body, with a plurality of ribs (26) extending intermediate the channels (30). The fan blade (20) has a dovetail (24), and an airfoil (18) extending radially…",
  "path": "/patents/990967",
  "publishedAt": "2013-05-08T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01D5/18",
    "UNITED TECHNOLOGIES CORP [US]"
  ],
  "textContent": "A fan blade (20) comprises a main body extending between a leading edge (21) and a trailing edge (22). Channels (30) are formed into the main body, with a plurality of ribs (26) extending intermediate the channels (30). The fan blade (20) has a dovetail (24), and an airfoil (18) extending radially outwardly from the dovetail (24). Material is deposited within the channels (30), with a first type of material (102) being selected to provide additional stiffness to the fan blade (20), and a second type of material (104) being selected for having good damping characteristics. A method and gas turbine engine (210) are also disclosed.",
  "title": "Hollow fan blade tuning using distinct filler materials and method of designing such a fan blade"
}