APUS strives to become the leader in sustainable, ecologically friendly propulsion system integration and thus empower the future of aviation. This mission is embodied by the APUS i-planes: APUS i-2 and APUS i-6. These two aircraft programs combine APUS’s unique and comprehensive experience in airframe design and certification with paradigm-shifting hybrid-electric propulsion systems. The APUS i-2 is the first fully hydrogen-powered 4-seat travel aeroplane and utilises the novel APUS TubeStruct™ technology. The larger APUS i-6 acts as a technology demonstrator for hybrid-electric power train systems.