Cranfield Aerospace Solutions (CAeS) is advancing towards the inaugural airborne test of its hydrogen powertrain system, supported by the imminent closure of a Series B funding round. The British company, based in Bedfordshire, anticipates its modular and scalable hydrogen propulsion system to be in service by 2027, initially designed for the Britten-Norman Islander aircraft. Despite funding delays, CAeS has made significant progress in finalizing the design, with innovative features such as a compactly packaged fuel cell and efficient thermal management systems. The company's focus on adaptability and sustainability is evident in its collaboration with Dronamics and exploration of new market opportunities. CAeS aims to address regulatory requirements and expand the application of its technology to various aircraft platforms. By dismissing electric options as unfeasible and emphasizing the advantages of hydrogen power, CAeS is positioned as a key player in enabling zero-emissions aviation. The company's upcoming presence at Farnborough International underlines its commitment to showcasing innovative solutions for sustainable air travel.