05 - Propulsion and Energy
EVALUATION OF LIQUID HYDROGEN CONDITIONING CONCEPTS FOR AIRCRAFT ENGINES EMPLOYING EXHAUST GAS WASTE HEAT RECOVERY
P. Kirschnek¹, A. Görtz², M. Schmelcher², F. Thilker¹, J. Häßy²; ¹FH JOANNEUM, Austria ;²Deutsches Zentrum für Luft- und Raumfahrt, Germany
This paper investigates liquid hydrogen conditioning for aero-engines using exhaust gas waste heat as the primary energy source, next to compressor bleed air and engine-oil heat. A closed nitrogen secondary fluid cycle transfers heat from these engine sources to the hydrogen. Design and off-design studies evaluate impacts on hydrogen injection temperatures, heat exchanger sizing, and power demand.
DOI: 10.71945/icas2026_0551