不再伴有馬達的轟鳴，幾乎就在悄無聲息間，一架以氫氣為原料的純燃料電池無人機，緩緩駛離跑道，躍向藍天，在空中展翅翱翔。
(Ecns.cn) -- An unmanned aerial vehicle (UAV) powered by a hydrogen fuel-cell was successfully tested near Shanghai's Fengxian District last week, according to Tongji University, which developed the aircraft.
The "Feiyue-1" has a 5-meter wingspan, weighs 20 kilograms and can fly for two hours at 30 km/h, the university said.
Xu Zhenyu, associate professor at Tongji University, said developing new-energy aircraft, especially hydrogen fuel-cell planes, has become the focus of much attention in response to environmental challenges.
A team of students at Tongji's School of Aerospace Engineering and Applied Mechanics began research in 2008 and have solved many technical problems, Xu said.
The team established a lab with Shanghai-based Oxai Aircraft in 2011, a project that was co-founded by Qingpu District and Tongji University last year, he added.
Xu said the sample plane, which features green technology and easy maintenance, is suitable for environmental monitoring, battle reconnaissance.
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