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...International research journal of engineering and technology irjet e issn volume issue feb www net p fuel cells in aerospace systems narayan thakur advait inamdar deepak pal mechanical engineer a shah institute thane maharashtra india rajendra mane college ratnagiri abstract are regarded as proven power source care cell fig shows principle sketch the so for manned spacecraft where they generate electric called proton exchange membrane k polymer from stored hydrogen oxygen these reactants carried electrolyte pemfc which cryogenic liquid form requirements is supplied on flying platforms include low weight high reliability anode side it tries to reach cathode flexibility temperature density changes doing achieves assistance catalytic powered air vehicles mainly competitive places material such platinum endurance required small unmanned atoms split up into protons electrons already operating with suitable quite few numbers find different ways join pemfcs have been considered but applicatio...