Manufacturing Industry
Hydrogen fuel cells power unmanned aerial vehicle.(EMERGING TECHNOLOGY)
Advanced Materials & Processes, November, 2006
Successful test flights of a hydrogen-powered unmanned 22-foot wingspan aircraft believed to be the largest to fly on a proton exchange membrane (PEM) fuel cell have been carried out by researchers at the Georgia Institute of Technology, Atlanta. The source of the hydrogen was compressed hydrogen, and the fuel-cell system generates only 500 watts.
In contrast to smaller UAVs built in the past, which had no landing gear and had to be hand launched, Georgia Tech's demonstrator vehicle operates like a full-sized aircraft, requiring no auxiliary batteries or boosters for take-off. To construct the fuel cell power plant, researchers bought a commercial fuel cell stack and modified it extensively, adding systems for hydrogen delivery and refueling, thermal...
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