Fuel Cells
Abstract
Fuel cells are regarded as a proven power source for manned spacecraft where they generate electric power from stored hydrogen and oxygen. These reactants are carried in cryogenic liquid form. The requirements for fuel cell systems on flying platforms include low weight, high reliability, and flexibility to temperature and density changes. Fuel-cell-powered air vehicles are mainly competitive in places where low power and high endurance are required. Small unmanned vehicles are already operating with suitable systems in quite a few number. Mainly polymer electrolyte membrane fuel cells (PEMFCs) have been considered, but for applications in transport aircraft, the solid oxide fuel cell (SOFC) is also considered because ...
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