In a groundbreaking development, engineers in the US have unveiled a revolutionary liquid hydrogen system designed to fuel and cool future jets, with the aim of reducing aviation emissions and promoting sustainable flight. This innovative system, developed by researchers at the FAMU-FSU College of Engineering, is tailored for a 100-passenger hybrid-electric aircraft and combines hydrogen fuel cells with turbine-driven superconducting generators. By consolidating fuel storage, cooling, and delivery control into a single integrated setup, the team has tackled major challenges in hydrogen aviation technology. Notably, the system's gravimetric index of 0.62 signifies a significant improvement in efficiency, with 62% of the system's weight being usable hydrogen fuel. The design eliminates the need for mechanical pumps by utilizing tank pressure to regulate hydrogen flow, ensuring reliability and weight reduction. Moreover, the system leverages liquid hydrogen to remove heat from critical components, enhancing overall efficiency. The engineers plan to transition from simulations to hardware by constructing and testing a prototype at FSU's Center for Advanced Power Systems, under NASA's Integrated Zero Emission Aviation program. With collaborators from various institutions, this project represents a crucial step towards realizing practical zero-emission, hydrogen-powered flights.