07 - Systems, Subsystems and Equipment
MODAL-BASED FUEL LEVEL ESTIMATION OF CRYOGENIC PROPELLANT TANKS
S. Pfeifer¹, F. Thilker¹, A. Tramposch¹, A. Buchroithner, University of Technology, Austria; ¹FH JOANNEUM, Austria
This work explores non-invasive cryogenic fuel level measurement for hydrogen aircraft tanks using modal, eigenfrequency-based gauging. Experimental liquid-nitrogen tests reveal limitations of thermal methods, while coupled simulations and laboratory measurements demonstrate how modal frequency shifts enable robust, slosh-insensitive fill-level estimation relevant beyond aviation.
DOI: 10.71945/icas2026_0663