Helicopters with Fuel Cells

The old saying that "there is strength in numbers" also applies to fuel cells. To deliver a high enough power output, a number of cells have to be connected in series. Manufacturers normally stack the fuel cells – a structure consisting of several metal plates, each containing one channel for air and one for hydrogen. This makes the fuel cell stack quite heavy.

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<p><a href="http://www.physorg.com/news131968300.html">Helicopters with Fuel Cells</a></p> <p>The old saying that "there is strength in numbers" also applies to fuel cells. To deliver a high enough power output, a number of cells have to be connected in series. Manufacturers normally stack the fuel cells – a structure consisting of several metal plates, each containing one channel for air and one for hydrogen. This makes the fuel cell stack quite heavy.</p>