Turbotech has made a groundbreaking achievement by successfully running a scalable turboprop out of a cryogenic hydrogen tank, becoming the first company to do so. Through the utilization of Ansys simulation, Turbotech's hydrogen turbine propulsion system is proven to operate efficiently and produce zero carbon emissions for light aviation applications. By integrating Ansys across their designs, Turbotech has created a digital thread that optimizes the development of hydrogen propulsion systems, ensuring a smoother transition to this innovative technology. The challenges of using hydrogen as a fuel in turbine designs are addressed by Turbotech's scalable approach, which leverages Ansys simulation to design a gas turbine capable of supporting various fuels. Through simulation-led product development, Turbotech efficiently identified optimal nozzle designs for real-world testing, reducing prototyping costs and timelines significantly. Ansys Fluent software provided critical predictions regarding flame shape and temperature, proving the structural integrity of the nozzles during hydrogen burn. Turbotech's collaboration with Ansys, particularly through the Ansys Startup Program, has enabled the development of a novel regenerative turbine and established a digital thread that facilitates data management and enables the retrofit for hydrogen. The success of this project highlights the potential for hydrogen-fueled turbine engines in various aviation sectors, including small-scale passenger planes and VTOL vehicles. The overall sentiment towards hydrogen in this article is highly positive, emphasizing the environmental benefits and efficiency of hydrogen propulsion systems for the aviation industry. Through the joint efforts of Turbotech, Ansys, and partners like BeautHyFuel, the advancement of hydrogen technology in aviation is accelerated, paving the way for a greener and more sustainable future in air travel.