Researchers at the FAMU-FSU College of Engineering have made significant strides in advancing zero-emission aviation by designing a cutting-edge liquid hydrogen storage and delivery system. This system not only enables hydrogen to be used as a clean fuel but also serves as a cooling medium for critical power systems aboard electric-powered aircraft. The study, published in Applied Energy, focuses on a design tailored for a 100-passenger hybrid-electric aircraft that utilizes both hydrogen fuel cells and hydrogen turbine-driven superconducting generators. The system efficiently stores liquid hydrogen, facilitates safe transfer, and supports power demands during various flight phases. The team's system-level optimization approach led to the development of a gravimetric index that significantly improves the usable hydrogen fuel mass to total system mass ratio, showcasing the feasibility of using liquid hydrogen for cooling and fuel. By implementing staged thermal integration, liquid hydrogen serves dual roles as a coolant and fuel, maximizing system efficiency while reducing hardware complexity. To address challenges in liquid hydrogen delivery without the need for mechanical pumps, the team devised a pump-free system that utilizes tank pressure to control hydrogen flow. This innovative approach involves regulating pressure by injecting hydrogen gas or venting hydrogen vapor based on real-time adjustments linked to the aircraft's power demand profile. The researchers plan to progress to the experimental validation phase, collaborating with partner universities under NASA's Integrated Zero Emission Aviation program. FSU leads in hydrogen storage, thermal management, and power system design, aiming to bring clean aviation technologies to fruition through research and collaboration.