Heaven FCH
HEAVEN main goal is to design, develop and integrate the worldwide first aircraft powertrain based on high power density fuel cell system and high energy density liquid hydrogen fuel system into an existing 2-4 seats aircraft for testing in flight operation.




News and Events
NEWSLETTER 08 – September 2023
CONTENTS 01. Partners' progress concerning HEAVEN (April 2023 – September 2023) ....................................................... 2 02. HEAVEN Flights and press event in Maribor, Slovenia...
HEAVEN project completes world’s first piloted flight of liquid hydrogen powered electric aircraft
The hydrogen-electric ‘HY4’ demonstrator aircraft took off from Maribor, Slovenia, and saw safe and efficient operation throughout multiple flight tests The aircraft uses liquid hydrogen to power a hydrogen-electric fuel cell system that powered the aircraft for the...
Sustainable aviation at Paris Airshow
As part of a new Memorandum of Understanding, signed at the Paris Airshow, Air Liquide will strengthen its relationship with H2FLY, by providing its expertise on liquid hydrogen for onboard and on-ground infrastructure. Air Liquide is currently working on several...