Hydrogen fuel cells give drones 'several hours' of flight time

[SteveReno]

Hydrogen fuel cells give drones 'several hours' of flight time

 

[Acroduster]

Hmm. The energy density numbers don't figure too well and I'm not sure about the weight issue. My guess is that the hydrogen is under ridiculously high pressures.

 

[User Name]

Flying contraptions with high pressure bottles of pure hydrogen, what could go wrong?

Always made me nervous getting scuba tanks filled to 3000 psi with 80/20 oxygen/air.