{
  "$type": "site.standard.document",
  "description": "A method (100) and system (26) to provide clearance control for a gas turbine having a multi-stage compressor and a turbine having turbine buckets rotating within a turbine shell, the method includes: selecting (102) a first compressor stage from which to extract compressed air; ducting the…",
  "path": "/patents/991176",
  "publishedAt": "2013-05-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01D11/24",
    "GEN ELECTRIC [US]"
  ],
  "textContent": "A method (100) and system (26) to provide clearance control for a gas turbine having a multi-stage compressor and a turbine having turbine buckets rotating within a turbine shell, the method includes: selecting (102) a first compressor stage from which to extract compressed air; ducting the compressed air from the first compressor stage to the turbine shell; passing (106) the compressed air from the first compressor stage to thermally contract the turbine shell; selecting a second compressor stage (102) from which to extract compressed air and deselecting the first compressor stage; ducting the compressed air from the second compressor stage to the turbine shell, and passing (106) the compressed air from the second compressor stage to thermal expand the turbine shell.",
  "title": "Active clearance control system and method for a gas turbine engine"
}