Naval Research Laboratory completes hydrogen powered UAV flight

http://mil-embedded.com/news/navy-research-laboratory-completes-uav-flight-with-hydrogen-powered-fuel-cell/

Naval Research Laboratory completes UAV flight with hydrogen ... Military Embedded Systems WASHINGTON. Naval Research Laboratory (NRL) researchers completed the first flight of the Ion Tiger unmanned aerial vehicle (UAV) with a new built in-house hydrogen-powered fuel cell. The NRL chemistry and tactical electronic warfare divisions built ...