Hydrogen Road Trip Part 1: Ready for take-off?

Michael Holder
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The cockpit of the HY4 plane
Image:

The cockpit of the HY4 plane

The German government has helped fund the world's only hydrogen/electric plane prototype, but could it really be the future of passenger air travel?

When he first floated the idea of developing a plane powered entirely by a hydrogen fuel cell battery the response engineer Josef Kallo often received in meetings was one of laughter. Yet fast forward...

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