Liebherr Aerospace & Transportation has partnered with automotive giant General Motors to develop a fuel-cell auxiliary power unit (APU) for future single-aisle aircraft. GM has identified aviation as a potential market for a modular fuel-cell architecture unveiled in 2017. The move comes as fuel cells seem about to emerge as a viable primary power source for electric cars. Simultaneously, hydrogen is enjoying renewed attraction in aviation. The hoped-for bottom line for an APU is more ...

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