World's First hydrogen Fuel Cell-Powered Multi-rotor UAV

Thanks for those stories.

I would like to note, unless I skimmed too quickly, none of
these developments involve liquid hydrogen.

It seems counterintuitive at first, but liquid hydrogen does
not containt as many hydrogen atoms per unit volume as many
hydrogen containing compounds. Gasoline being one of them,
and why it's hard to beat.

I was unaware of some of these compounds being worked with.
Very interesting and ingenious ideas.

Brian
--
http://www.earthwaves.org/forum/index.php - Earth Sciences discussion
http://www.skywise711.com - Lasers, Seismology, Astronomy, Skepticism
Sed quis custodiet ipsos Custodes?