Liebherr Aerospace & Transportation has partnered with automotive giant General Motors (GM) to develop an auxiliary power unit (APU) for future single-aisle aircraft based on a fuel cell. The move comes at a time when fuel cells appear ready to emerge as a viable alternative as a primary power source for electric cars. Simultaneously, hydrogen is enjoying renewed attraction in aviation. The hoped-for bottom line for a fuel cell-based APU is more environmentally sustainable ...
