A method of operation is provided during which hydrogen fuel is produced using a reversible fuel cell system onboard a vehicle while the vehicle is stationary and/or docked. The reversible fuel cell system receives water and input electricity to produce th...

A method of manufacture is provided during which a first material layer is disposed with a second material layer to provide a multi-layered preform. The first material layer lengthwise and widthwise overlaps the second material layer. The first material la...

A powerplant for an aircraft includes a first turbine engine, a second turbine engine and a fuel cell system. The second turbine engine includes a second engine flowpath, a second engine compressor section, a second engine combustor section and a second en...

An apparatus comprising a plurality of power feeder cables for transferring power between an electrical machine located within an engine core of a hybrid electric gas turbine engine and power controllers located on a fan case of the hybrid electric gas tur...