{
  "$type": "site.standard.document",
  "description": "A turbofan gas turbine engine comprises, in axial flow sequence, a heat exchanger module, an inlet duct, a fan assembly, a compressor module, and a turbine module. The fan assembly comprises a plurality of fan blades defining a fan diameter D, and the heat exchanger module comprises a plurality of…",
  "path": "/patents/1410893",
  "publishedAt": "2025-11-19T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01D25/12",
    "ROLLS ROYCE PLC [GB]"
  ],
  "textContent": "A turbofan gas turbine engine comprises, in axial flow sequence, a heat exchanger module, an inlet duct, a fan assembly, a compressor module, and a turbine module. The fan assembly comprises a plurality of fan blades defining a fan diameter D, and the heat exchanger module comprises a plurality of heat transfer elements for transfer of heat from a first fluid contained within the heat transfer elements to an airflow passing over a surface of the heat transfer elements prior to entry of the airflow into the fan assembly. [0002] In use, the first fluid has a maximum temperature of 80°C, and the heat exchanger module transfers at least 300kW of heat energy from the first fluid to the airflow.",
  "title": "AN IMPROVED TURBOFAN GAS TURBINE ENGINE"
}