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Diamond Aircraft H2EDT Project Explores Hybrid Hydrogen-Electric Propulsion for AAM & General Aviation

Austrian-led H2EDT project pioneers hybrid hydrogen-electric propulsion research for sustainable aviation, combining fuel cells, batteries, and digital systems in a scalable testbed

By Joe Macey
http://www.aaminternational.com

Diamond Aircraft is leading the Hydrogen-based Twin-engine Electrification and Digitalization Testbed (H2EDT) project, an Austrian research initiative exploring the use of gaseous hydrogen in hybrid-electric propulsion systems for General Aviation and Advanced Air Mobility (AAM).

Funded by the Austrian Research Promotion Agency (FFG) under the Take Off program, the project runs through 2025 at Diamond’s Wiener Neustadt facility.

In partnership with FH JOANNEUM, TU Graz, HyCentA, and IESTA, the H2EDT team is developing a modular, half-scale testbed platform. Designed to simulate both conventional twin-engine aircraft and emerging VTOL configurations, the system integrates up to ten electric motors, batteries, a hydrogen fuel cell, and onboard hydrogen storage.

To overcome hydrogen’s low power-to-weight ratio and storage challenges, the project uses a parallel hybrid architecture, allowing batteries and fuel cells to power any motor independently or in combination. A digital power management system, developed by FH JOANNEUM, dynamically optimizes energy flow for performance and safety.

A digital twin created in collaboration with TU Graz simulates performance, environmental effects, and potential failure modes. This model will support future certification pathways and scalability to platforms like the DA40 or DA42.

H2EDT builds on Diamond’s past hydrogen research and aims to accelerate safe, zero-emission aviation. Results are expected in early 2026.

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• EVVTOL mission is to introduce multiple technology shows & expos including influential high-level EV business summits based on the dual themes of business engagement with key manufacturers working in the EV & E mobility Industry, energy vehicle information technology and charging infrastructure Industry. These events are excellent opportunities to learn about and discuss the latest future transportation technology advancements in EV& VTOL industry, and the battery energy challenges that still remain.

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EVHNews

Electric-Hybrid E Automotive, E Aviation, E Marine Technology & Future Innovative Electric-Hybrid VTOL Aerospace Tech News Around The World! EVHNews.com is a dedicated global digital Technology platform for EVVTOL a Global EV / Hybrid Automotive, E-Aviation, E-VTOL, E-Marine Future Technology Industry Show & Expo Event Organization where the world biggest EV & E-VTOL brands invest in the future of transportation. EV H News is committed to the Electric Vehicles & EV-Hybrid Automotive, E-Aviation E-VTOL-UAV E-Marine, industry including e-mobility e-semi & e-truck. This digital platform will include reviews and resources from global industry leaders, many with a focus on clean blue technology and alternative fuels where applicable. EVH news platform is for all to have access to the tools and information available for the future for breakthrough e-technology of the e-automotive, e-aviation, e-marine, e-motorcycle e-semi & e-truck e-motorsport industries. About EVVTOL • EVVTOL a new corporation branding itself as the most Influential global future technology show / expo event organization by strategically positioning itself to successfully facilitate EV and VTOL transportation industry clients with their needs! • EVVTOL’s goal is to showcase the EV & VTOL industry and introduce the major EV & VTOL vehicles and component manufactures in the e-tech world by unveiling and displaying cutting-edge EV & E-VTOL technology. • EVVTOL mission is to introduce multiple technology shows & expos including influential high-level EV business summits based on the dual themes of business engagement with key manufacturers working in the EV & E mobility Industry, energy vehicle information technology and charging infrastructure Industry. These events are excellent opportunities to learn about and discuss the latest future transportation technology advancements in EV& VTOL industry, and the battery energy challenges that still remain. (evvtol.org) 877-4EV-VTOL (877-438-8865)

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