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"Le Bourget". Airbus to trial in-flight auxiliary power entirely generated by hydrogen

Using fuel cells to explore the power balance between engines and APU

Airbus UpNext has launched a new demonstrator programme to explore, on the ground and in flight, a new architecture for the generation of non propulsive energy through the use of hydrogen fuel cells.

On conventional airliners, the APU (Auxiliary Power Unit), a small additional engine that runs on traditional jet fuel, provides together with the engines the energy required to power a number of non-propulsive aircraft functions, such as air conditioning, onboard lighting and electric power for avionics. With this new technology demonstrator, led from its facilities in Spain, Airbus UpNext will replace the actual APU of an A-330 airplane with a hydrogen fuel cell system that will generate electricity. Known as HyPower, the hydrogen fuel cell demonstrator also aims to reduce the emissions of CO2, nitrogen oxides (NOx) and noise levels associated with a traditional APU.
New design features and integration techniques will also contribute to maturing the safety and operations of future hydrogen-powered aircraft and will demonstrate the stable operation of a fuel cell in-flight, including its restart.
The flight test campaign will utilise a modified A-330 aircraft and a ground test bed of the system. Airbus UpNext will procure a production unit for renewable hydrogen to fulfil the entire need for the test campaign.

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AVIONEWS - World Aeronautical Press Agency