Simon will talk about GKN Aerospace activities around the H2Gear project that intends to address the topic of Hydrogen Electric Propulsion (H2EP), as studied under the Hybrid Hydrogen Electric Architecture (H2GEAR) program. This system uses hydrogen fuel cells powered by liquid hydrogen, leveraging its energy capacity and cooling benefits. Aspects of how a cryogenically cooled power train can boost energy conversion and reduce system mass, as well as the choices involved in designing a safe, effective powertrain for a conceptual aircraft will be addressed.