{
  "$type": "site.standard.document",
  "description": "Aircraft propulsion systems and aircraft are described. The aircraft propulsion systems (300) include aircraft systems (304) having at least one hydrogen tank (332) and an aircraft-systems heat exchanger (356) and engine systems (302) having at least a main engine core, a high pressure pump (318)…",
  "path": "/patents/1436231",
  "publishedAt": "2026-07-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B64D33/08",
    "RTX CORP [US]"
  ],
  "textContent": "Aircraft propulsion systems and aircraft are described. The aircraft propulsion systems (300) include aircraft systems (304) having at least one hydrogen tank (332) and an aircraft-systems heat exchanger (356) and engine systems (302) having at least a main engine core, a high pressure pump (318), a hydrogen-air heat exchanger (360), and an expander, wherein the main engine core comprises a compressor section, a combustor section having a burner (310), and a turbine section. Hydrogen is supplied from the at least one hydrogen tank (332) through a hydrogen flow path (344), passing through the aircraft-systems heat exchanger (356), the high pressure pump (318), the hydrogen-air heat exchanger (360), and the expander, prior to being injected into the burner (310) for combustion.",
  "title": "TURBINE ENGINES HAVING HYDROGEN FUEL SYSTEMS"
}