The Office of Naval Research's "Ion Tiger" UAV will test a hydrogen-powered fuel cell design, which can travel farther and carry heavier payloads than earlier battery-powered designs. Credit: The Office of Naval Research
Nearly undetectable from the ground, unmanned aerial vehicles (UAVs) are widely used by the military to scan terrain for possible threats and intelligence. Now, fuel cell powered UAVs are taking flight as an Office of Naval Research (ONR)-sponsored program to help tactical decision-makers gather critical information more efficiently... and more quietly.
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