The university said students have tested a 55-pound drone with a 19-foot carbon-fiber wing that can carry 15 pounds. They used battery power in two test flights and plan to move to a hydrogen fuel cell and then liquid hydrogen.
The university said hydrogen-powered craft are more environmentally friendly than those powered by fossil fuels since the only waste product is water.
An unmanned hydrogen-powered drone could fly for days at high altitude and return to earth to be re-used. It could be used to monitor the weather, survey crops or provide military surveillance.
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