Replacing Oil

This Tuesday ze’ Germans successfully put an airplane into flight powered by a hydrogen fuel cell.

 
The First photo shows the fuel cell under the wing. It holds a modest 2 or 4.9 kg of hydrogen. The system delivers about 25 kw of power at takeoff, but the plane only requires about 10 kw when flying in a straight line.
What makes this exciting is the overall efficiency of the fuel cell. Standard combustion engines are so much heavier that they only contribute about half as much of their generated power to propulsion.

Read the original article at DLR Portal
DLR Portal – DLR motor glider Antares takes off in Hamburg – powered by a fuel cell