MTU Aero Engines, based in Munich, Germany, has achieved a significant milestone in the realm of zero-emission flight by successfully completing multi-week testing of a liquid hydrogen fuel system for its Flying Fuel Cell™ (FFC). This achievement is a step forward in the company's journey towards electrification of the powertrain. The tests demonstrated the safety, reliability, and expected functionality of the system architecture, ensuring a regulated supply of preconditioned hydrogen to the fuel cell. MTU, in partnership with MT Aerospace AG, is working on a comprehensive liquid-hydrogen fuel system for commercial aviation, encompassing tanks, sensors, heat exchangers, valves, safety systems, and controls. Dr. Günther Schullerer, from MT Aerospace, highlighted the successful testing of the liquid hydrogen tank in Augsburg, emphasizing the importance of operating with the actual medium. The process involves transporting and storing hydrogen in liquid form at extreme temperatures, with the need for heating during operation to convert it into a gaseous state before being fed into the fuel cell. Dr. Claus Riegler, Senior Vice President at MTU, expressed satisfaction with the validated concept, enabling the development of a reliable and high-performing LH2 fuel system solution for various aircraft models. Looking ahead, the next phase includes the commencement of testing for a product-specific full-system FFC in 2026, with the liquid hydrogen system playing a crucial role in this advancement.